Upload
others
View
4
Download
0
Embed Size (px)
Citation preview
c3
c-3
LinearBush
Linear Bush
Structure and Features
LM shaft
Retainer
Nut
Ball
Seal
日本特許番号第2607993号
Linear Bush model LM is a linear motion system used in combination with a cylindrical LM shaft
to perform infinite linear motion. The balls under a load are in point contact with the LM shaft.
This allows linear motion with minimal friction resistance and achieves highly accurate and
smooth motion despite, the small permissible load.
The nut uses high-carbon chromium bearing steel and its outer and inner surfaces are ground
after being heat-treated.
●InterchangeabilitySince the dimensional tolerances of the Linear Bush's components are standardized, they are
interchangeable. The LM shaft is machined through cylindrical grinding, which can easily be
performed, and it allows highly accurate fitting clearance to be achieved.
●Highly accurate retainer plateSince the retainer, which guides three to eight rows of balls, is integrally molded, it is capable
of accurately guiding the balls in the traveling direction and achieving stable running accuracy.
Small-diameter types use integrally molded retainers made of synthetic resin. It reduces noise
generated during operation and allows superb lubrication.
●Wide array of typesA wide array of types are available, such as standard type, clearance-adjustable type, open
type, long type and flanged LM case unit, allowing the user to select a type that meets the
intended use.
Fig. 1 Structure of Linear Bush Model LM … UU
c-4
ApplicationsThe Linear Bush is used in a wide array of applications such as precision equipment including
OA equipment and peripherals, measuring machines, automatic recorder and digital 3D mea-
surement machine, and the slide units of industrial machinery including multi-axis drilling
machine, punching press, tool grinder, automatic gas cutting machine, printing machine, card
selector and food packing machine.
c. Dimensions of the Linear Bush
c-5
LinearBush
c5
With the Linear Bush nut having the most accuratecylindrical shape, this type is widely used.There are two series of the Linear Bush in dimen-sional group.Type LM ……………Millimeter-dimension series used
most widely in JapanType LM-MG………Stainless steel version of type LMType ME……………Millimeter-dimension series com-
monly used in Europe
Types and FeaturesStandard Type Open Type
Long Type
Containing two units of the standardretainer plate, this type is optimal for loca-tions where a moment load is present andreduces man-hours in installation.Model LM-L ……… standard type
The nut is partially cut open by one row ofballs (50 t゚o 80 )゚. This enables the LinearBush to be used even in locations wherethe LM shaft is supported by a column orfulcrum. In addition, a clearance can easilybe adjusted.Types LM-OP/LME-OPType LM-MG-OP
Seal Type Clearance-adjustable Type
This type has the same dimensions as thestandard type, but the nut has a slit in thedirection of the LM shaft. This allows thelinear bush to be installed in a housingwhose inner diameter is adjustable, andenables the clearance between the LMshaft and the housing to easily be adjusted.Models LM-AJ/LME-AJModel LM-MG-AJ
This type has the same dimensions as the standardtype, but a special synthetic rubber seal is incorporatedinto both ends or either end of the linear bush, thus toprevent foreign matter from entering the linear bush andminimize leaking of the grease.Models LM … UU/LME … UU/LM … MGUU(The symbol for type with its one side having a seal: "U")A seal is also available for some of the clearance-adjustable types and the open types.
c-6
The nut of the standard type Linear Bush isintegrated with a flange. This enables theLinear Bush to be directly mounted ontothe housing with bolts, thus achieving easyinstallation. Model LMF ………… standard typeModel LMF-M ……… made of stainless steel
Flanged Type (Circular)
Flanged Type (Circular) - Long
Flanged Type (Square)
Flanged Type (Small)
The nut is integrated with a small flange.Since the height is lower than model LMK,compact design is allowed. Since the rowsof balls in the Linear Bush are arranged sothat two rows receive the load from thef lat side, a long service l i fe can beachieved.Model LMH ……… standard type
Flanged Type (Small) - Long
The flange is smaller and lower than modelLMK-L, allowing compact design. Containingtwo units of the standard retainer plate, thistype is optimal for locations where amoment load is present. Since the rows ofballs in the Linear Bush are arranged so thattwo rows receive the load from the flat side,a long service life can be achieved.Model LMH-L ……… standard type
Flanged Type (Square) - Long
Like model LMF-L, this type also has aflange, but the flange is cut to a squareshape. Since the height is lower than thecircular flange type, compact design isallowed.Model LMK-L ………… standard typeModel LMK-ML ……… made of stainless steel
Like model LMF, this type also has a flange,but the flange is cut to a square shape.Since the height is lower than the circularflange type, compact design is allowed.Model LMK ………… standard typeModel LMK-M ……… made of stainless steel
The nut of the long type Linear Bush is inte-grated with a flange. This enables the LinearBush to be directly mounted onto the hous-ing with bolts, thus achieving easy installa-tion. Containing two units of the standardretainer plate, this type is optimal for loca-tions where a moment load is present.Model LMF-L ………… standard typeModel LMF-ML ……… made of stainless steel
c. Dimensions of the Linear Bush
c-7
LinearBush
c7
It is a case unit where the standard type ofLinear Bush is incorporated into a small,lightweight aluminum casing. This modelcan easily be mounted simply by securingit to the table with bolts.
LM Case Unit Type Model SC
LM Case Unit Type Model SH
LM Case Unit Type (Long) Model SL
LM Shaft Support Type Model SK
An aluminum-made light fulcrum for secur-ing an LM shaft. The LM shaft mountingsection has a slit, enabling the linear bushto firmly secure an LM shaft using bolts.
LM Case Unit Type (Long) Model SH-L
A long version of model SH, this model is acase unit that contains two units of thestandard type Linear Bush in an aluminumcasing.
A long version of model SC, this model con-tains two units of the standard type LinearBush in an aluminum casing.
It is a case unit where the standard type ofLinear Bush is incorporated into a smallerand lighter aluminum casing than modelSC. This model allows even more compactdesign than model SC. It also has flexibili-ty in mounting orientation. Additionally, itis structured so that two rows of ballsreceive the load from the top of the casing,allowing a long service life to be achieved.
Flexibly mountable type Flexibly mountable type
c-8
manufactures high quality, dedicated LM shafts for Linear Bush model LM series in
short delivery time.
Standard LM Shafts
also manufactures hollow LM shafts and those LM shafts with their ends specially
treated like ones shown in the photo at your request.
Build-to-order LM Shafts
c. Dimensions of the Linear Bush
c-9
LinearBush
c9
Accuracy StandardsThe accuracy of the Linear Bush in inscribed circle diameter, outer diameter, width and eccen-
tricity is described in the corresponding dimensional table. The accuracy of model LM in
inscribed circle diameter and eccentricity is classified into high grade (no symbol) and preci-
sion grade (P) (accuracy symbol is expressed at the end of each model number).
The accuracy of clearance-adjustment type (-A-J) and open type (-OP) in inscribed circle diam-
eter and eccentricity indicates the value before division.
Dedicated Shafts for Model LMThe LM shaft of the Linear Bush needs to be manufactured with much consideration for hard-
ness, surface roughness and dimensional accuracy of the shaft since balls roll directly on it.
manufactures dedicated LM shafts for the Linear Bush. See the dimensional table for
standard LM shafts on page c-11.
Among other factors, the surface hardness of an LM shaft affects the service life of your
Linear Bush system most significantly. Therefore, take much care in selecting a material and a
heat treatment method when assembling the system. In addition, as the surface hardness of
the LM shaft greatly affects the service life as stated above, use care in selecting and/or han-
dling a material and heat treatment.
●MaterialGenerally, the following materials are used as suitable for surface hardening through induction
quenching.
SUJ2 (JIS G 4805, high-carbon chromium bearing steel)
SK3 to 6 (JIS G 4401, carbon tool steel)
S55C (JIS G 4051, carbon steel for machine structural use)
For special applications, martensitic stainless steel SUS440C, which is corrosion resistant,
may also be used.
●HardnessWe recommend surface hardness of 58 HRC (≒ 653 HV) or higher. The depth of the hardened
layer is determined by the size of the Linear Bush; we recommend approximately 2 mm for gen-
eral use.
●Roughness of the surfaceTo achieve smooth motion, the surface should preferably be finished to 0.40a or less.
c-10
●Dimensions of a HollowLM Shaft
If a hollow LM shaft is required for purposes
such as weight reduction, use the desired
material from table 1 of dimensions of hollow
LM shafts that keeps in stock.
Models marked with "**" are build-to-order
items.
φd
φd4
Table 1 Dimensions of Hollow LM Shafts
Model No.
LM 8
LM 10
LM 12
LM 13
LM 16
LM 20
LM 20
LM 25
LM 30
LM 35
**LM 38
LM 40
LM 50
LM 60
**LM 80
**LM 100
8
10
12
13
16
20
20
25
30
35
38
40
50
60
80
100
3
4
6
7
9
10
14
15
16
20
22
22
25
32
52.5
67.5
0.4
0.6
0.7
0.8
1.1
1.9
1.3
2.5
4
5.1
6
6.9
11.6
16
22.6
33.7
Unit: mm
LM shaft outerdiameterd
Inner diameter
d4
Mass
(kg/m)
c11
c. Dimensions of the Linear Bush
c-11
LinearBush
SF 3
SF 4
SF 5
SF 6
SF 8
SF 10
SF 12
SF 13
SF 16
SF 20
SF 25
SF 30
SF 35
SF 38
SF 40
SF 50
SF 60
SF 80
SF 100
LM 3
LM 4
LM 5
LM 6
LM 8, 8S
LM 10
LM 12
LM 13
LM 16
LM 20
LM 25
LM 30
LM 35
LM 38
LM 40
LM 50
LM 60
LM 80
LM 100
3
4
5
6
8
10
12
13
16
20
25
30
35
38
40
50
60
80
100
◎
◎
◎
◎
◎
◎
◎
◎
– 4
–12
– 2– 8
– 5
–14
– 6
–17
– 7
–20
– 9
–25
–10
–29–12–34
Standard LM Shaftsmanufactures high quality, dedicated
LM shafts for Linear Bush model LM series in
short delivery time.
①・Major materials: THK5SP
(THK standard material)
SUJ2
(high-carbon chromium bearing
steel)
①・Hardness: HRC58 to 64
①・Hardened layer depth: 0.8 to 2.5 mm
(varies with shaft diameter)
①・Surface roughness: 0.20a to 0.40a
①・Straightness of the LM shaft: 50μm/300 mm or less
② Precision-grade LM shafts with shaft diameter toler-
ance of g5 or h5 are also manufactured as standard.
③ Corrosion-resistant, martensitic stainless steel LM
shafts are also available.
④ When asking an estimate or placing an order, refer to
the model number coding shown on the left.
Model number coding SF25 g6 -500L K
zModel numberxLM shaft outer diameter tolerancecOverall LM shaft length (in mm)vSpecial symbol - no symbol: solid shaft;
K : standard hollow shaftM: special material; F : with surface treatment*If two or more symbols aregiven, they are shown in analphabetical order.
z x c v
Lφd
Shaft diameterModel No.
Overall LM shaft length: L mm
d 100
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
200
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
300
◎
◎
◎
◎
◎
◎
◎
◎
◎
400
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
500
◎
◎
◎
◎
◎
◎
◎
◎
○
◎
◎
600
◎
◎
◎
◎
◎
◎
◎
700
◎
◎
◎
◎
◎
◎
◎
◎
◎
◎
800
◎
◎
◎
◎
◎
◎
◎
○
◎
◎
○
○
○
1000
◎
◎
◎
◎
◎
○
◎
◎
○
○
○
1200
◎
◎
◎
◎
◎
1300
◎
◎
◎
◎
◎
◎
◎
1500
◎
◎
○
◎
◎
○
○
○
2000
○
○
○
○
○
3000SupportedmodelTolerance
g6μm
Note: ◎ indicates standard stock; ○ indicates semi-standard stock.
c-12
Specially Machined Typesalso supports special machining processes such as tapping, milling, threading, through
drilling and joggling, as shown in the figure below, at your request.
Table of Rows of Balls and Masses for Clearance-adjustable Types and Open Types of the Linear Bush
Tapped for support Tapped
KeywayJoggled
FlatThreaded
Shaft diameter
6
8
10
12
13
16
20
25
30
35
38
40
50
60
80
100
120
LM 6-AJ
LM 8S-AJ
LM 8-AJ
LM 10-AJ
LM 12-AJ
LM 13-AJ
LM 16-AJ
LM 20-AJ
LM 25-AJ
LM 30-AJ
LM 35-AJ
LM 38-AJ
LM 40-AJ
LM 50-AJ
LM 60-AJ
LM 80-AJ
LM 100-AJ
LM 120-AJ
4
4
4
4
4
4
5(4)
5
6(5)
6
6
6
6
6
6
6
6
8
7.8
10
14.7
29
31
42
68
85
216
245
384
475
579
1560
1820
4320
8540
14900
Model No.
Clearance-adjustable type Open type
Rows of ballsMass
g
—
—
—
—
LM 12-OP
LM 13-OP
LM 16-OP
LM 20-OP
LM 25-OP
LM 30-OP
LM 35-OP
LM 38-OP
LM 40-OP
LM 50-OP
LM 60-OP
LM 80-OP
LM 100-OP
LM 120-OP
—
—
—
—
3
3
4(3)
4
5(4)
5
5
5
5
5
5
5
5
6
—
—
—
—
25
34
52
69
188
210
350
400
500
1340
1650
3750
7200
11600
Model No. Rows of ballsMass
g
Note: The numbers of ball rows in the table apply to types using a resin retainer. Those of types using ametal retainer are indicated in parentheses.
c. Dimensions of the Linear Bush
c-13
LinearBush
c13
Selection by Service Environment
■Grease LubricationWhen installing a type attached with seals on both sides (… UU) to the LM shaft, apply grease
to rows of balls in the Linear Bush.
When installing a standard type (without seal), perform the same as above or apply grease to
the LM shaft.
Afterward, replenish grease of the same type as necessary according to the service condi-
tions.
For grease, we recommend high-quality lithium-soap group grease No. 2.
●LubricationThe Linear Bush operates using grease or oil lubrication.
■Oil LubricationTurbine oil, machine oil and spindle oil are
commonly used.
When oiling the Linear Bush, drop oil on the
LM shaft, or infuse it from the greasing hole
on the housing as shown in Fig. 2.
Housing
Spacer
Fig. 2
●Dust PreventionEntrance of dust or other foreign matter into the Linear Bush will cause abnormal wear or
shorten the service life. When entrance of dust or other foreign matter is predicted, it is impor-
tant to select an effective sealing device or dust-control device that meets the atmospheric
conditions.
For the Linear Bush, a special synthetic rubber seal that is highly resistant to wear and a felt
seal (highly dust preventive with low seal resistance) are available as dust prevention acces-
sories.
In addition, produces round bellows. Contact us for details.
■Felt Seal Model FLMLinear Bush model LM series include types equipped with a special synthetic rubber seal (LM
…UU, U). If desiring to have an additional dust prevention measure, or desiring to lower the
seal resistance, use the felt seal model FLM (see table 5 on page c-20).
c-14
Assembling the Linear Bush●Housing Inner-diameterDimensions
Table 2 shows housing inner-diameter toler-
ances recommended for the Linear Bush.
When fitting the Linear Bush with the hous-
ing, clearance fitting is normally recommend-
ed. If the clearance needs to be smaller, pro-
vide transition fitting.
Table 2 Housing Inner-diameter Tolerance
LM
LME
LMF
LMK
LMH
LM-L
LMF-L
LMK-L
LMH-L
—
High grade(no symbol)
High grade (no symbol)
Precision grade(P)
Type
Model No. Accuracy
H7
H6
H7
H7
J7
J6
K6,J6
J7
Housing
Clearance fitting Transition fitting
●Clearance between theNut and LM Shaft
When using the Linear Bush with an LM shaft
in combination, normal clearance applies. If
the clearance needs to be smaller, close
clearance applies.
Note 1: If the clearance after installation is to benegative, it is preferable not to exceed theradial clearance tolerance indicated in thedimensional table.
Note 2: The tolerance of the shaft for case unitmodels SC, SL, SH and SH-L falls underhigh grade (no symbol).
Table 3. Shaft Outer-diameter Tolerance
LM
LME
LMF
LMK
LMH
LM-L
LMF-L
LMK-L
LMH-L
High grade (no symbol)
Precision grade(P)
High grade(no symbol)
—
Type
Model No. Accuracy
f6,g6
f5,g5
h7
f6,g6
h6
h5
k6
h6
LM shaft
Normal clearance Close clearance
●Material and Surface TreatmentFor the Linear Bush and the LM shaft, stainless steel types are available for some models.
It is also possible to provide surface treatment to the LM shaft. However, surface treatment
may not be suitable for some types. Contact for details.
c. Dimensions of the Linear Bush
c-15
LinearBush
c15
●Installing the NutAlthough the Linear Bush does not require a large strength for securing it in the LM shaft
direction, do not support the nut only with driving fitting.
For the housing inner-diameter tolerance, see table 2.
■Installing the Standard TypeFigures 3 and 4 show examples of installing
the standard type Linear Bush.
When securing the Linear Bush, use snap
rings or stopper plates.
Fig. 3 Snap Ring
Fig. 4 Stopper Plate
c-16
Model No.
LM 3
4
5
6
8
8S
10
12
13
16
20
25
30
35
38
40
50
60
80A
100A
120A
—
—
WR 10
12
—
—
19
21
23
28
32
40
45
52
—
—
—
—
—
—
—
—
—
10
12
15
15
19
21
22
—
—
40
45
52
56・58
60
80
90
120
(150)
(180)
AR 7
8
10
12
15
15
19
21
23
28
32
40
45
52
57
60
80
90
120
150
180
—
—
10
12
15
15
19
21
—
28
32
40
45
52
—
60
80
90
120
—
—
Snap ring
For outer surfaceNeedle snap ring
Needle snap ring
C-shapesnap ring
C-shapesnap ring
For inner surface
Snap Ring for InstallationTo secure Linear Bush model LM, snap rings
indicated in table 4 are available.
Note 1: For models indicated with parentheses,use C-shape concentric snap rings.
Note 2: The table commonly applies to models LM,LM-GA, LM-MG and LM-L.
Setscrews Not AllowedSecuring the nut by pressing the outer sur-
face with one setscrew as shown in Fig. 5
will cause the nut to be deformed.
SetscrewNut
Housing
Fig. 5
Table 4 Types of Snap Rings
c. Dimensions of the Linear Bush
c-17
LinearBush
c17
■Installing a Flanged TypeWith models LMF, LMK and LMH, the nut is integrated with a flange. Therefore, the Linear Bush
can be mounted only via the flange.
■Installing a Clearance-adjustableType
To adjust the clearance of a clearance-
adjustable type (-AJ), use a housing that
allows adjustment of the nut outer diameter
so as to facilitate the adjustment of the
clearance between the Linear Bush and the
LM shaft. Positioning the slit of the Linear
Bush at an angle of 90 w゚ith the housing's
slit will provide uniform deformation in the cir-
cumferential direction (see Fig. 6).
Nut mounted via socket and spigot joint Mounted via a flange only
Fig. 6
■Installing an Open TypeFor an open type (-OP), also use a housing
that allows adjustment of the nut outer diam-
eter as shown in Fig. 7.
Open types are normally used with a light
preload. Be sure not to give an excessive
preload.
Whirl-stop plate Whirl-stop plate
Housing
Adjustment bolt
Fig. 7
c-18
●Installing the Shaft SupportShaft support model SK can easi ly be
secured to the table using mounting bolts.
Model SK enables the LM shaft to firmly be
secured using tightening bolts.
Tightening bolt
Mounting boltWasher
Reference surface
THK SK30
●Installing an LM Case Unit■Attaching Model SC (SL)Since models SC and SL can be attached
from the top or bottom by simply tightening it
using bolts, the installation time can be short-
ened (see Fig. 8).
Fig. 8
■Attaching Model SH (SH-L)Since models SH and SHL can be attached
from the top or bottom by simply tightening it
using bolts, the installation time can be short-
ened (see Fig. 9).
Fig. 9
Basic installation
Alternative installation
c. Dimensions of the Linear Bush
c-19
LinearBush
c19
●Incorporating the NutWhen incorporating the standard Linear Bush
into a housing, use a jig and drive in the nut,
or use a flatter plate and gently hit the nut,
instead of directly hitting the side plate or
the seal (see Fig. 10).
D-0.3
dr-0.3
D : Nut outer diameter dr: Inscribed circle diameter
Fig. 10
●Inserting the LM ShaftWhen inserting the LM shaft into the Linear
Bush, align the center of the shaft with that
of the nut and gently insert the shaft
straightforward into the nut. If the shaft is
slanted while it is inserted, balls may fall off
or the retainer may be deformed (see Fig.
11).
●When Under a Moment LoadWhen using the Linear Bush, make sure the load is evenly distributed on the whole ball race-
way. In particular, if a moment load is applied, use two or more Linear Bush units on the same
LM shaft and secure an adequately large distance between the units.
If using the Linear Bush under a moment load, also calculate the equivalent radial load and iden-
tify the correct model number (see page C-11 of the " General Catalog - Technical
Descriptions of the Products," provided separately).
Fig. 11
●Rotational Use Not AllowedThe Linear Bush is not suitable for rotational
use for a structural reason (see Fig. 12).
Forcibly rotating it may cause an unexpected
accident.
Fig. 12
c-20
●Precautions on Installingan Open Three-ball-rowType Linear Bush
When installing an open three-ball-row type
Linear Bush, mount it while taking into
account the load distribution as indicated in
Fig. 13.
Load
LM12 13
Fig. 13
●Attaching Felt Seal ModelFLM
The felt seal can be press-fit into a housing
finished to H7, but cannot be used as a stop-
per for preventing the Linear Bush from com-
ing off. Be sure to use the felt seal by
attaching it as indicated in the figure on the
right.
Also make sure to impregnate the felt with
sufficient lubricant before attaching it.
■Dimensions of the Felt Seal
B
φDφd
Table 5 Major Dimensions of FLM
FLM 6
FLM 8
FLM 10
FLM 12
FLM 13
FLM 16
FLM 20
FLM 25
FLM 30
FLM 35
FLM 38
FLM 40
FLM 50
FLM 60
FLM 80
FLM 100
Applicable
model No.
6
8
10
12
13
16
20
25
30
35
38
40
50
60
80
100
12
15
19
21
23
28
32
40
45
52
57
60
80
90
120
150
LM 6
LM 8
LM 10
LM 12
LM 13
LM 16
LM 20
LM 25
LM 30
LM 35
LM 38
LM 40
LM 50
LM 60
LM 80
LM 100
Unit: mm
d D
2
2
3
3
3
4
4
5
5
5
5
5
10
10
10
10
B
Supported Linear
Bush model
Major dimensions
c. Dimensions of the Linear Bush
c-23
LinearBush
c23
c-22
Model LMModel LM
L
L2 L2
L1
φD0φD
h0
φdr φdrφdr
h1
θ°
Model LM Model LM-AJ Model LM-OP
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Major dimensions Eccentricity(max)μm
Radialclearancetolerance
Basic load rating
Inscribed circle diameter Outer diameter Length
Standard typeBallrows
Massg
Clearance-
adjustable typeOpen type L L1 L2 D0 h0 h1 θ° Precision High μm
CN
C0N
ToleranceTolerancePrecision/high
DdrHighPrecision
ToleranceTolerance
LM 3LM 4LM 5LM 6LM 8SLM 8LM 10LM 12LM 13LM 16LM 20LM 25LM 30LM 35LM 40LM 50LM 60
44444444455666666
1.41.948
11163031.5436987
220250390585
15802000
———
LM 6-AJLM 8S-AJLM 8-AJLM 10-AJLM 12-AJLM 13-AJLM 16-AJLM 20-AJLM 25-AJLM 30-AJLM 35-AJLM 40-AJLM 50-AJLM 60-AJ
———————
LM 12-OPLM 13-OPLM 16-OPLM 20-OPLM 25-OPLM 30-OPLM 35-OPLM 40-OPLM 50-OPLM 60-OP
345688
1012131620253035405060
0–0.005
0–0.006
0–0.007
0–0.008
0–0.009
0–0.008
0–0.009
0–0.010
0–0.012
0–0.015
78
101215151921232832404552608090
0–0.009
0–0.011
0–0.013
0–0.016
0–0.0190
–0.022
Unit: mm
101215191724293032374259647080
100110
0–0.12
0–0.2
0–0.3
——
10.213.511.517.522232326.530.54144.549.560.57485
——
0–0.2
0–0.3
——
1.11.11.11.11.31.31.31.61.61.851.852.12.12.63.15
——9.6
11.514.314.31820222730.53843495776.586.5
———11111.51.51.51.522.52.5333
———————89
1111121517202530
———————80806060505050505050
4448888888
10101012121217
888
1212121212121215151520202025
– 2– 3– 3– 5– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–16
88.288.2
167206176265373412510775863980
15701670216038204710
108127206265225402549598775
1180137015702750314040207940
10000
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80 C゚.If the ambient temperature exceeds 80 C゚, use the type equipped with a metal retainer (modelLM-GA).If requiring a type equipped with a seal, indicate it when placing an order.(Example) LM13 UU
Seal attached on both ends of the nut
Note When using the Linear Bush on a single shaft, use two or more units (instead of one unit) on thesame shaft to avoid a moment load, and secure a large distance between the units.
c. Dimensions of the Linear Bush
c-25
LinearBush
c25
c-24
L
d0
L2 L2
L1
φD0φD
Model LM-GAModel LM-GA
φdr φdr φdr
h1
Model LM-GA Model LM-GA-AJ Model LM-GA-OP
h0
θ°
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. M a j o r d i m e n s i o n s Eccentricity(max)
Greasinghole
μm
Radialclearancetolerance
Basic loadrating
Inscribed circle diameter Outer diameter Length
Standard typeBallrows
Massg
Clearance-
adjustable typeOpen type L L1 L2 D0 h0 h1 θ° d0 Precision High μm
CN
C0N
ToleranceTolerancePrecision/high
DdrHighPrecision
ToleranceTolerance
LM 6GALM 8SGALM 8GALM 10GALM 12GALM 13GALM 16GALM 20GALM 25GALM 30GALM 35GALM 38GALM 40GALM 50GALM 60GALM 80GALM 100GALM 120A
333344455666666668
811163031.5436987
220250390565585
1580200045208600
15000
————
LM 12GA-AJLM 13GA-AJLM 16GA-AJLM 20GA-AJLM 25GA-AJLM 30GA-AJLM 35GA-AJLM 38GA-AJLM 40GA-AJLM 50GA-AJLM 60GA-AJLM 80GA-AJLM 100GA-AJLM 120A-AJ
————
LM 12GA-OPLM 13GA-OPLM 16GA-OPLM 20GA-OPLM 25GA-OPLM 30GA-OPLM 35GA-OPLM 38GA-OPLM 40GA-OPLM 50GA-OPLM 60GA-OPLM 80GA-OPLM 100GA-OPLM 120A-OP
688
10121316202530353840506080
100120
0–0.006
0–0.007
0–0.008
0–0.0090
–0.010
0–0.009
0–0.010
0–0.012
0–0.0150
–0.020
121515192123283240455257608090
120150180
0–0.011
0–0.013
0–0.016
0–0.019
0–0.0220
–0.025
Unit: mm
19172429303237425964707680
100110140175200
13.511.517.522232326.530.54144.549.558.560.57485
105.5125.5158.6
1.11.11.11.31.31.31.61.61.851.852.12.12.12.63.154.154.154.15
11.514.314.31820222730.538434954.55776.586.5
116145175
————
1.51.51.5222.52.53333334
————7.59
111113151718202530405085
————8080606060505050505050505080
———2222.32.33333334445
8888888
1010101212121217172020
121212121212121515152020202025253030
– 5– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–13–16–16–20–25
206176265373412510775863980
1570167021602160382047107350
1410016400
265225402549598775
11801370157027503140402040207940
10000160003480040000
0–0.2
0–0.3
0–0.4
0–0.2
0–0.3
0–0.4
Metal retainer type
Note If requiring a type equipped with a seal, indicate it when placing an order (seal heat resistance:80 C゚.)(Example) LM50GA UU
Seal attached on both ends of the nut
Note When using the Linear Bush on a single shaft, use two or more units (instead of one unit) on thesame shaft to avoid a moment load, and secure a large distance between the units.
c. Dimensions of the Linear Bush
c-27
LinearBush
c27
c-26
Model No. M a j o r d i m e n s i o n s Eccentricity(max)μm
Radialclearancetolerance
Basic load rating
Inscribed circle diameter Outer diameter Length
Standard typeBallrows
Massg
Clearance-
adjustable typeOpen type L L1 L2 D0 h0 h1 θ° Precision High μm
CN
C0N
ToleranceTolerancePrecision/high
DdrHighPrecision
ToleranceTolerance
LM 3MLM 4MLM 5M*LM 6MG*LM 8SMG*LM 8MG*LM 10MG*LM 12MG*LM 13MG*LM 16MG*LM 20MG*LM 25MG*LM 30MG*LM 35MG*LM 40MG
444444444455666
1.41.948
11163031.5436987
220250390585
———
LM 6MG-AJLM 8SMG-AJ*LM 8MG-AJ*LM 10MG-AJ*LM 12MG-AJ*LM 13MG-AJ*LM 16MG-AJ*LM 20MG-AJ*LM 25MG-AJ*LM 30MG-AJ*LM 35MG-AJ*LM 40MG-AJ
————————
*LM 13MG-OP*LM 16MG-OP*LM 20MG-OP*LM 25MG-OP*LM 30MG-OP*LM 35MG-OP*LM 40MG-OP
345688
101213162025303540
0–0.005
0–0.006
0–0.007
0–0.008
0–0.008
0–0.009
0–0.010
0–0.012
78
10121515192123283240455260
0–0.009
0–0.011
0–0.013
0–0.016
0–0.019
Unit: mm
101215191724293032374259647080
0–0.12
0–0.2
0–0.3
——
0–0.2
0–0.3
——
10.213.511.517.522232326.530.541 44.549.560.5
——
1.11.11.11.11.31.31.31.6 1.6 1.851.852.1 2.1
——9.6
11.514.314.318202227 30.538 43 49 57
———11111.51.51.51.52 2.52.53
————————9
111112151720
————————80806050505050
4448888888
1010101212
888
121212121212121515152020
– 2– 3– 3– 5– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13
88.288.2
167206176265373412510775863980
157016702160
108127206265225402549598775
118013701570275031404020
L
L2 L2
L1
φD0φD
Model LM-MGModel LM-MG
φdr φdr φdr
h1
Model LM-MG Model LM-MG-AJ Model LM-MG-OP
θ°
h0
Stainless steel type
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80 C゚.If the ambient temperature exceeds 80 C゚, use the type equipped with a metal retainer and indi-cate "A" at the end of the model number (for those marked with * in the table, metal retainersare available).(Example) LM30MG A
High temperature symbolIf requiring a type equipped with a seal, indicate it when placing an order (seal heat resistance:80 C゚).For an open type, only type A is available.(Example) LM30MG UU
Seal attached on both ends of the nut
Note Since the nut and the balls use stainless steel, these models are highly resistant to corrosion andenvironment.When using the Linear Bush on a single shaft, use two or more units (instead of one unit) on thesame shaft to avoid a moment load, and secure a large distance between the units.
Note Since Linear Bush models LME50 or smaller are incorporated with a synthetic resin retainer, donot use them at temperature exceeding 80℃.If the ambient temperature exceeds 80℃, use the type equipped with a metal retainer and indi-cate "A" at the end of the model number.(Example) LME20G A
High temperature symbolIf requiring a type equipped with a seal, indicate it when placing an order (seal heat resistance:80℃).(Example) LME16 UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-29
LinearBush
c29
c-28
Model LMEModel LME
L
L2 L2
L1
φD0φDh0
φdr φdrφdr
h1
θ°
Model LME Model LME-AJ Model LME-OP
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. M a j o r d i m e n s i o n s Eccentricity(max)
Radialclearancetolerance
Basic load rating
Inscribed circle diameter Outer diameter Length
Standard typeClearance-
adjustable typeBallrows
Massg
Open type L L1 L2 D0 h0 h1 θ° μm μmCN
C0N
ToleranceToleranceDdr Tolerance Tolerance
LME 5LME 8LME 12LME 16LME 20LME 25LME 30LME 40LME 50LME 60LME 80
44455666666
1120415791
215325705
113022205140
LME 5-AJLME 8-AJLME 12-AJLME 16-AJLME 20-AJLME 25-AJLME 30-AJLME 40-AJLME 50-AJLME 60-AJLME 80-AJ
——
LME 12-OPLME 16-OPLME 20-OPLME 25-OPLME 30-OPLME 40-OPLME 50-OPLME 60-OPLME 80-OP
58
121620253040506080
12162226324047627590
120
Unit: mm
2225323645586880
100125165
14.516.522.924.931.544.152.160.677.6
101.7133.7
1.11.11.31.31.61.851.852.152.653.154.15
11.515.22124.930.337.544.5597286.5
116
111.51.52223333
——7.5
101012.512.516.82127.236.3
——787860605050505454
1212121215151517172020
– 5– 5– 7– 7– 9– 9– 9–13–13–16–16
206265510775863980
15702160382047107350
265402775
118013701570275040207940
1000016000
+0.008 0
0–0.0080
–0.009
0–0.011
0–0.0130
–0.015
+0.009–0.001+0.011–0.001
+0.013–0.002
+0.016–0.004
0–0.2
0–0.3
0–0.4
0–0.2
0–0.3
0–0.4
Model LME-GA
Note If a metal retainer is used, the Linear Bush has the shape as shown below.When using the Linear Bush on a single shaft, use two or more units (instead of one unit) on thesame shaft to avoid a moment load, and secure a large distance between the units.
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LM13L UU
Seal attached on both ends of the nut
c31
c. Dimensions of the Linear Bush
c-31
LinearBush
c-30 Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
φdr
Model LM-L
Model LM-LModel LM-L
L
φD0 φD
L2 L2
L1
Model No. M a j o r d i m e n s i o n s
Inscribed circle diameter Outer diameter Length
Standard type Ball rowsMass
gL Tolerance L1 Tolerance L2 D0 μm μm
CN
C0N
ToleranceDdr Tolerance
LM 3LLM 4LLM 5LLM 6LLM 8LLM 10LLM 12LLM 13LLM 16LLM 20LLM 25LLM 30LLM 35LLM 40LLM 50LLM 60L
4444444455666666
348
1631628090
145180440580795
117031003500
34568
1012131620253035405060
78
1012151921232832404552608090
Unit: mm
19232935455557617080112123135154192211
0–0.3
0–0.4
——2027354446465361828999
121148170
——
1.11.11.11.31.31.31.61.61.851.852.12.12.63.15
——9.6
11.514.31820222730.53843495776.586.5
10101015151515151520202025252525
– 2– 3– 3– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–16
139139263324431588657814
12301400156024902650343060807650
216254412529784
110012001570235027503140549062708040
1590020000
0–0.3
—
0–0.4
0–0.010
0–0.012
0–0.015
0–0.020
0–0.013
0–0.016
0–0.019
0–0.022
0–0.025
Eccentricity(max)
Radialclearancetolerance
Basic load rating
Note A stainless steel type is also available. Contact for details.
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMF25 UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-33
LinearBush
c33
c-32
φdr
PCD
Model LMF
Model LMFModel LMF
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. M a j o r Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
HToleranceDdr Tolerance
LMF 6LMF 8SLMF 8LMF 10LMF 12LMF 13LMF 16LMF 20LMF 25LMF 30LMF 35LMF 40LMF 50LMF 60
44444455666666
26.53440787694
134180340460795
105422002960
688
1012131620253035405060
1215151921232832404552608090
Unit: mm
555666688
1010131318
0–0.009
0–0.010
0–0.012
0–0.015
PCD d1×d2×h μm
20242429323338435160677898
112
3.4✕6.5✕3.33.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.56.6✕11✕6.59✕14✕8.69✕14✕8.6
11✕17.5✕10.8
1212121212121215151520202025
Eccentricity(max)
μm
1212121212121215151520202025
Radial clearance tolerance
μm
– 5– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–13
Basic load rating
CN
C0N
206176265373412510775863980
15701670216038204710
265225402549598775
1180137015702750314040207940
10000
0–0.011
0–0.013
0–0.016
0–0.019
0–0.022
Length
ToleranceL
191724293032374259647080
100110
0–0.2
0–0.3
Flange diameter
ToleranceD1
283232394243485462748296
116134
0–0.2
0–0.3
d i m e n s i o n s
c. Dimensions of the Linear Bush
c-35
LinearBush
c35
c-34
φdr
Model LMF-M
PCD
Model LMF-MModel LMF-M
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
HToleranceDdr Tolerance
LMF 6MLMF 8SMLMF 8MLMF 10MLMF 12MLMF 13MLMF 16MLMF 20MLMF 25MLMF 30M
4444445566
26.53440787694
134180340460
688
10121316202530
12151519212328324045
Unit: mm
555666688
10
0–0.009
0–0.010
PCD d1×d2×h μm
20242429323338435160
3.4✕6.5✕3.33.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
12121212121212151515
Eccentricity(max)
μm
12121212121212151515
Radial clearance tolerance
μm
–5–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
206176265373412510775863980
1570
265225402549598775
1180137015702750
0–0.011
0–0.013
0–0.016
Length
ToleranceL
19172429303237425964
0–0.2
0–0.3
Flange diameter
ToleranceD1
28323239424348546274
0–0.2
Stainless type
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMF20M UU
Seal attached on both ends of the nut
Note Since the nut and the balls use stainless steel, these models are highly resistant to corrosionand environment.
M a j o r d i m e n s i o n s
c. Dimensions of the Linear Bush
c-37
LinearBush
c37
c-36
□K
φdr
PCD
Model LMK
Model LMKModel LMK
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMK 6LMK 8SLMK 8LMK 10LMK 12LMK 13LMK 16LMK 20LMK 25LMK 30LMK 35LMK 40LMK 50LMK 60
44444455666666
18.52329615675
104145300375692864
20202520
688
1012131620253035405060
1215151921232832404552608090
Unit: mm
22252530323437425058647592
106
0–0.009
0–0.010
0–0.012
0–0.015
0–0.019
0–0.022
H PCD d1×d2×h μm
555666688
1010131318
20242429323338435160677898
112
3.4✕6.5✕3.33.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.56.6✕11✕6.59✕14✕8.69✕14✕8.6
11✕17.5✕10.8
1212121212121215151520202025
Eccentricity(max)
μm
1212121212121215151520202025
Radial clearancetolerance
μm
– 5– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–13
Basic load rating
CN
C0N
206176265373412510775863980
15701670216038204710
265225402549598775
1180137015702750314040207940
10000
0–0.011
0–0.013
0–0.016
Length
ToleranceL
191724293032374259647080
100110
0–0.2
0–0.3
Flange diameter
ToleranceD1
283232394243485462748296
116134
0–0.2
0–0.3
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMK13 UU
Seal attached on both ends of the nut
M a j o r d i m e n s i o n s
c. Dimensions of the Linear Bush
c-39
LinearBush
c39
c-38
□K
φdr
PCD
Model LMK-M
Model LMK-MModel LMK-M
φD1
φd2 φd1
φD
L
H
h
Stainless type
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMK 6MLMK 8SMLMK 8MLMK 10MLMK 12MLMK 13MLMK 16MLMK 20MLMK 25MLMK 30M
4444445566
18.52329615675
104145300375
688
10121316202530
12151519212328324045
Unit: mm
22252530323437425058
0–0.009
0–0.010
H PCD d1×d2×h μm
555666688
10
20242429323338435160
3.4✕6.5✕3.33.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
12121212121212151515
Eccentricity(max)
μm
12121212121212151515
Radial clearancetolerance
μm
–5–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
206176265373412510775863980
1570
265225402549598775
1180137015702750
0–0.011
0–0.013
0–0.016
Length
ToleranceL
19172429303237425964
0–0.2
0–0.3
Flange diameter
ToleranceD1
28323239424348546274
0–0.2
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMK25M UU
Seal attached on both ends of the nut
Note Since the nut and the balls use stainless steel, these models are highly resistant to corrosionand environment.
M a j o r d i m e n s i o n s
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMF35L UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-41
LinearBush
c41
c-40
Model LMF-L
φdr
PCD
Model LMF-LModel LMF-L
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
HToleranceDdr Tolerance
LMF 6LLMF 8LLMF 10LLMF 12LLMF 13LLMF 16LLMF 20LLMF 25LLMF 30LLMF 35LLMF 40LLMF 50LLMF 60L
4444455666666
3253
105100130187260515655970
156035004500
68
1012131620253035405060
12151921232832404552608090
Unit: mm
55666688
1010131318
0–0.010
0–0.012
0–0.015
0–0.020
0–0.022
0–0.025
PCD d1×d2×h μm
202429323338435160677898
112
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.56.6✕11✕6.59✕14✕8.69✕14✕8.6
11✕17.5✕10.8
15151515151520202025252525
Eccentricity(max)
μm
15151515151520202025252525
Radial clearance tolerance
μm
– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–13
Basic load rating
CN
C0N
324431588657814
12301400156024902650343060807650
529784
110012001570235027503140549062708040
1590020000
0–0.013
0–0.016
0–0.019
Length
ToleranceL
35455557617080
112123135154192211
0–0.3
0–0.4
Flange diameter
ToleranceD1
2832394243485462748296
116134
0–0.2
0–0.3
M a j o r d i m e n s i o n s
Note Since the nut and the balls use stainless steel, these models are highly resistant to corrosionand environment.
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMF13ML UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-43
LinearBush
c43
c-42
Model LMF-ML
φdr
PCD
Model LMF-MLModel LMF-ML
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Stainless type
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
HToleranceDdr Tolerance
LMF 6MLLMF 8MLLMF 10MLLMF 12MLLMF 13MLLMF 16MLLMF 20MLLMF 25MLLMF 30ML
444445566
3253
105100130187260515655
68
10121316202530
121519212328324045
Unit: mm
55666688
10
0–0.010
0–0.012
PCD d1×d2×h μm
202429323338435160
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
151515151515202020
Eccentricity(max)
μm
151515151515202020
Radial clearance tolerance
μm
–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
324431588657814
1230140015602490
529784
1100120015702350275031405490
0–0.013
0–0.016
0–0.019
Length
ToleranceL
35455557617080
112123
0–0.3
0–0.4
Flange diameter
ToleranceD1
283239424348546274
0–0.2
M a j o r d i m e n s i o n s
c. Dimensions of the Linear Bush
c-45
LinearBush
c45
c-44
Model LMK-L
□K
φdr
PCD
Model LMK-LModel LMK-L
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMK 6LLMK 8LLMK 10LLMK 12LLMK 13LLMK 16LLMK 20LLMK 25LLMK 30LLMK 35LLMK 40LLMK 50LLMK 60L
4444455666666
26468882
108160230475575870
138033004060
68
1012131620253035405060
12151921232832404552608090
Unit: mm
222530323437425058647592
106
0–0.010
0–0.012
0–0.015
0–0.020
0–0.022
0–0.025
H PCD d1×d2×h μm
55666688
1010131318
202429323338435160677898
112
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.56.6✕11✕6.59✕14✕8.69✕14✕8.6
11✕17.5✕10.8
15151515151520202025252525
Eccentricity(max)
μm
15151515151520202025252525
Radial clearancetolerance
μm
– 5– 5– 5– 5– 7– 7– 9– 9– 9–13–13–13–13
Basic load rating
CN
C0N
324431588657814
12301400156024902650343060807650
529784
110012001570235027503140549062708040
1590020000
0–0.013
0–0.016
0–0.019
Length
ToleranceL
35455557617080
112123135154192211
0–0.3
0–0.4
Flange diameter
ToleranceD1
2832394243485462748296
116134
0–0.2
0–0.3
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMK50L UU
Seal attached on both ends of the nut
M a j o r d i m e n s i o n s
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMK8ML UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-47
LinearBush
c47
c-46
Model LMK-ML
□K
φdr
PCD
Model LMK-MLModel LMK-ML
φD1
φd2 φd1
φD
L
H
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Stainless type
Model No. Flange perpendicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMK 6MLLMK 8MLLMK 10MLLMK 12MLLMK 13MLLMK 16MLLMK 20MLLMK 25MLLMK 30ML
444445566
26468882
108160230475575
68
10121316202530
121519212328324045
Unit: mm
222530323437425058
0–0.010
0–0.012
H d1×d2×h μm
55666688
10
PCD
202429323338435160
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
151515151515202020
Eccentricity(max)
μm
151515151515202020
Radial clearancetolerance
μm
–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
324431588657814
1230140015602490
529784
1100120015702350275031405490
0–0.013
0–0.016
0–0.019
Length
ToleranceL
35455557617080
112123
0–0.3
0–0.4
Flange diameter
ToleranceD1
283239424348546274
0–0.2
Note Since the nut and the balls use stainless steel, these models are highly resistant to corrosionand environment.
M a j o r d i m e n s i o n s
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMH16 UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-49
LinearBush
c49
c-48
φdr
φdr
Models LMH16 to 30Models LMH6 to 13
φD1φD1 BB
KK
C
Model LMHModel LMH
φd2 φd1
φD
LH
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flangeperpen-dicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMH 6LMH 8LMH 10LMH 12LMH 13LMH 16LMH 20LMH 25LMH 30
444445566
182850557095
150275350
68
10121316202530
121519212328324045
Unit: mm
182125272934384651
0–0.009
0–0.010
H d1×d2×h μm
55666688
10
B
202429323331364049
C
—————22243235
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
121212121212151515
Eccentricity(max)
μm
121212121212151515
Radialclearancetolerance
μm
–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
206265373412510775863980
1570
265402549598775
1180137015702750
0–0.011
0–0.013
0–0.016
Length
ToleranceL ToleranceD1
192429303237425964
0–0.2 0
–0.2
0–0.3
Flange diameter
283239424348546274
M a j o r d i m e n s i o n s
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.If requiring a type equipped with a seal, indicate it when placing an order.(Example) LMH20L UU
Seal attached on both ends of the nut
c. Dimensions of the Linear Bush
c-51
LinearBush
c51
c-50
φdr
φdr
φD1φD1 BB
KK
C
Models LMH16L to 30LModels LMH6L to 13L
Model LMH-LModel LMH-L
φd2 φd1
φD
LH
h
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Model No. Flangeperpen-dicularityInscribed circle diameter Outer diameter Mounting hole
Standard typeBallrows
Massg
KToleranceDdr Tolerance
LMH 6LLMH 8LLMH 10LLMH 12LLMH 13LLMH 16LLMH 20LLMH 25LLMH 30L
444445566
28407582
107143225450575
68
10121316202530
121519212328324045
Unit: mm
182125272934384651
0–0.010
0–0.012
H d1×d2×h μm
55666688
10
B
202429323331364049
C
—————22243235
3.4✕6.5✕3.33.4✕6.5✕3.34.5✕8✕4.44.5✕8✕4.44.5✕8✕4.44.5✕8✕4.4
5.5✕9.2✕5.45.5✕9.2✕5.46.6✕11✕6.5
151515151515202020
Eccentricity(max)
μm
151515151515202020
Radialclearancetolerance
μm
–5–5–5–5–7–7–9–9–9
Basic load rating
CN
C0N
324431588657814
1230140015602490
529784
1100120015702350275031405490
0–0.013
0–0.016
0–0.019
Length
ToleranceL ToleranceD1
35455557617080
112123
0–0.3
0–0.4
Flange diameter
283239424348546274
0–0.2
M a j o r d i m e n s i o n s
c. Dimensions of the Linear Bush
c-53
LinearBush
c53
c-52
W
BB1
K
W2
R
Models SC6 to 30
W1
TJ
M
4-S2
Datum plane
THK logo side
4-S×R
φdr
Models SC6 to 30Models SC6 to 30
CL
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Outer dimensions L M c a s e d i m e n s i o n s
Mounting hole position Tap Through bolt Center Inscribed circle diameter Unit mass Bush to be combined Basic load ratingHeight Width LengthModel No.
M W L B B1 C S✕R model No.S2height J±0.02
W1
±0.02K W2 T R dr Tolerance
g
SC 6UUSC 8UUSC 10UUSC 12UUSC 13UUSC 16UUSC 20UUSC 25UUSC 30UU
182226293038.54251.559.5
303440424450547678
253035363944506772
20242830.53336405458
5565.755.577
1110
151821262634405058
M4✕8M4✕8M5✕12M5✕12M5✕12M5✕12M6✕12M8✕18M8✕18
M3M3M4M4M4M4M5M6M6
91113151519212630
151720212225273839
151822252635364149
283237394146526872
668889
111215
91113141519.52125.529.5
68
10121316202530
0–0.009
0–0.010
345292
102123189237555685
LM 6UULM 8UULM 10UULM 12UULM 13UULM 16UULM 20UULM 25UULM 30UU
Unit: mm
Model No. of Linear
CN
C0N
206265373412510775863980
1570
265402549598775
1180137015702750
Example of Model Number for Use in Combination with Linear Bush Units
Linear Bush to be combined Example of model No.
Both ends attached with seal
Without sealMade of stainless steel;
both ends attached with seal
SC 13UU
SC 13
SC 13MUU
Standard stock
Build to order
Build to order
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.A stainless steel Linear Bush model LM-MG, highly corrosion resistant, can also be incorporatedat your request.
c. Dimensions of the Linear Bush
c-55
LinearBush
c55
c-54
W
BB1
K
W2
R
Models SC35 to 50
W1
TJ
M
4-S2
Datum plane
THK logo side
4-S×R
φdr
Models SC35 to 50Models SC35 to 50
C
4-R1
L
L1 W3
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Outer dimensions L M c a s e d i m e n s i o n s
Mounting hole position Tap Through bolt Center Inscribed circle diameter Unit Bush to be combined Basic load ratingHeight Width LengthModel No.
M W L B B1 C S✕R model No.S2height J±0.02
W1
±0.02K W2 W3 L1 T R R1 dr Tolerance
massg
SC 35UUSC 40UUSC 50UU
6878
102
90102122
8090
110
7080
100
101111
606080
M8✕18M10✕25M10✕25
M6M8M8
344052
455161
546280
8596
116
6080
100
424464
182025
343850
588
354050
0–0.012
110016003350
LM 35UULM 40UULM 50UU
Unit: mm
Model No. of Linear
CN
C0N
167021603820
314040207940
Example of Model Number for Use In Combination with Linear Bush Units
Linear Bush to be combined Example of model No.
Both ends attached with seal
Without seal
Both ends attached with seal
Without sealMade of stainless steel;
both ends attached with seal
SC 40UU
SC 40
SC 40MUU
Standard stock
Build to order
Build to order
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.A stainless steel Linear Bush model LM-MG, highly corrosion resistant, can also be incorporatedat your request.(Model SC50 does not include a stainless type.)
c. Dimensions of the Linear Bush
c-57
LinearBush
c57
c-56
W N
BB1
K
W2
R
W1
TJ
M
4-S2
Datum plane
THK logo side
4-S×R
A-MT6
φdr
Model SLModel SL
CL
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Outer dimensions L M c a s e d i m e n s i o n s
Mounting hole position Tap Through bolt Center Inscribed circle diameter Unit Bush to be combined Basic load ratingHeight Width LengthModel No.
M W L B B1 C S✕R model No.S2height J±0.02
W1
±0.02K W2 T R N dr Tolerance
massg
SL 6UUSL 8UUSL 10UUSL 12UUSL 13UUSL 16UUSL 20UUSL 25UUSL 30UU
182226293038.54251.559.5
303440424450547678
48586870758596
130140
20242830.53336405458
5565.755.577
1110
36424650506070
100110
M4✕8M4✕8M5✕12M5✕12M5✕12M5✕12M6✕12M8✕18M8✕18
M3M3M4M4M4M4M5M6M6
91113151519212630
151720212225273839
151822252635364149
283237394146526872
668889
111215
91113141519.52125.529.5
7776.56.56745
68
10121316202530
0–0.009
0–0.010
6810518520524240352011201440
LM 6ULM 8ULM 10ULM 12ULM 13ULM 16ULM 20ULM 25ULM 30U
Unit: mm
Model No. of Linear
CN
C0N
324431588657814
1230140015602490
529784
1100120015702350275031405490
Example of Model Number for Use In Combination with Linear Bush Units
Linear Bush to be combined Example of model No.
Both ends attached with seal
Without sealMade of stainless steel;
both ends attached with seal
SL 13UU
SL 13
SL 13MUU
Standard stock
Build to order
Build to order
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.A stainless steel Linear Bush model LM-MG, highly corrosion resistant, can also be incorporatedat your request.
c. Dimensions of the Linear Bush
c-59
LinearBush
c59
c-58
W
h
φd2
W1
M
J
C
2-S1
2-S3φdr
Model SHModel SH
2-S2×R
S2×R
Top surface of models SH6 to SH20
Top surface of models SH3 to SH5
B1
B
L
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Outer dimensions L M c a s e d i m e n s i o n s
Mounting hole position Tap Through bolt Center Inscribed circle diameter Unit Bush to be combined Basic load ratingHeight Width LengthModel No.
M W L B B1 C S1 S2✕R model No.S3height J±0.02
W1
±0.02d2 h dr Tolerance
massg
SH 3UUSH 4UUSH 5UUSH 6UUSH 8UUSH 10UUSH 12UUSH 13UUSH 16UUSH 20UU
14161822263234364249
10121416202628303642
13151724273535364044
———18202727283236
810129
101515161822
3335566667
M3M3M3M4M4M5M5M5M5M6
M3✕5.5M3✕6 M3✕6 M4✕8
M5✕8.5M6✕9.5M6✕9.5M6✕9.5M6✕10M6✕12
M2M2M2M3M3M4M4M4M4M5
9101114161920212428
5678
101314151821
4.24.24.26.56.588889.5
1.51.51.53.33.34.44.44.44.45.4
34568
1012131620
0–0.008
0–0.009
4.57
1121.632658190
150215
LM 3UULM 4UULM 5UULM 6UULM 8UULM 10UULM 12UULM 13UULM 16UULM 20UU
Unit: mm
Model No. of Linear
CN
C0N
88.288.2
167206265373412510775863
108127206265402549598775
118013700
–0.010
Example of Model Number for Use in Combination with Linear Bush Units
Linear Bush to be combined Example of model No.
Both ends attached with seal
Without sealMade of stainless steel;
both ends attached with seal
SH 13UU
SH 13
SH 13MUU
Standard stock
Build to order
Build to order
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.A stainless steel Linear Bush model LM-MG, highly corrosion resistant, can also be incorporatedat your request.
c. Dimensions of the Linear Bush
c-61
LinearBush
c61
c-60
W
h
φd2
W1
M
J
C
2-S1
2-S3φdr
Model SH-LModel SH-L
2-S2×R B1
B
L
Selecting a Model Number Refer to the " General Catalog - Technical Descriptions of the Products," provided separately
Outer dimensions L M c a s e d i m e n s i o n s
Mounting hole position Tap Through bolt Center Inscribed circle diameter Unit Bush to be combined Basic load ratingHeight Width LengthModel No.
M W L B B1 C S1 S2✕R model No.S3height J±0.02
W1
±0.02d2 h dr Tolerance
massg
SH 3LUUSH 4LUUSH 5LUUSH 6LUUSH 8LUUSH 10LUUSH 12LUUSH 13LUUSH 16LUUSH 20LUU
14161822263234364249
10121416202628303642
23273240526062667686
10141820303636405258
18222630425050546672
3335566667
M3M3M3M4M4M5M5M5M5M6
M3✕5.5M3✕6 M3✕6 M4✕8
M5✕8.5M6✕9.5M6✕9.5M6✕9.5M6✕10 M6✕12
M2M2M2M3M3M4M4M4M4M5
9101114161920212428
5678
101314151821
4.24.24.26.56.58 8889.5
1.51.51.53.33.34.44.44.44.45.4
34568
1012131620
0–0.008
0–0.009
8.513223565
125155190295425
LM 3ULM 4ULM 5ULM 6ULM 8ULM 10ULM 12ULM 13ULM 16ULM 20U
Unit: mm
Model No. of Linear
CN
C0N
139139263324431588657814
12301400
216254412529784
110012001570235027500
–0.010
Example of Model Number for Use in Combination with Linear Bush Units
Linear Bush to be combined Example of model No.
Both ends attached with seal
Without sealMade of stainless steel;
both ends attached with seal
SH13 LUU
SH13 L
SH13 MLUU
Standard stock
Build to order
Build to order
Note Since this model contains a synthetic resin retainer, do not use it at temperature exceeding 80℃.A stainless steel Linear Bush model LM-MG, highly corrosion resistant, can also be incorporatedat your request.
c-62
Tightening boltI
A
2-S H
h
φd
gTHK SK30
BW
bDatum plane
L
Model SKModel SK
Major dimensions
Model No.H W L B S
Mountingbolt
model No.h
±0.02
A±0.05
b g lShaftdiameterd
Tighteningbolt
model No.Mass
g
SK 10SK 12SK 13SK 16SK 20SK 25SK 30SK 35SK 40
32.837.537.5445160708396
4242424860708498
114
141414162024283236
323232384556647490
5.55.55.55.56.66.69
1111
M 5M 5M 5M 5M 6M 6M 8M10M10
202323273135425060
212121243035424957
55557.57
101212
6668
1012121515
182020253038445060
101213162025303540
M4M4M4M4M5M6M6M8M8
2430304070
130180270420
Unit: mm