Market Information MAI 70

“THE

NEW

KX”

Numb

er 1 i

n the

ratin

gs

Self-aligning linear ball bearingsLight range – inch sizes

Features

Self-aligning linear ball bearings■ are units comprising a housing, movable segments

and seals– housing in closed or open design– segments comprise a segment upper section,

support block, rolling elements (balls) and a segment lower section including the ball recirculation tracks

■ automatically compensate misalignments of the bearing central axis due to the movable segments. Shaft misalignments of up to max. �40 angular minutes are therefore possible without impairing the bearing load carrying capacity or operating life

■ have no reduction in load ratings due to edge pressure within the shaft misalignment tolerance, and can therefore support considerably higher loads than non-aligning linear ball bearings of the same diameter

■ run very quietly and with very low friction due to– the automatic compensation of misalignments– ground rolling element raceways in the support blocks

■ run without stick-slip – as compared with plain bearings – and are therefore suitable even for applications requiring high positional accuracy

■ permit high speeds and accelerations■ allow the construction of linear guidance systems

with unlimited travel ■ are supplied protected by a wet preservative■ are sealed on both sides by sealing shields or double-lip

contact seals– open linear ball bearings also have integral sealing strips

on both sides■ are dimensioned so that they can replace conventional

linear ball bearings even in existing applications■ can be supplied combined with INA housings as housing

units■ are suitable for use with supported shafts in the open

version and with the appropriate housing■ have adjustable clearance and can be preloaded in

conjunction with open, slotted housings■ can be combined with INA housings and shafts or shaft

and support rail units to achieve optimally matched, ready-to-fit, particularly cost-effective complete linear solutions with a long operating life

■ are also produced in metric dimensions (series KS, KSO, see INA Market Information MAI 71).

Self-aligning linear ball bearings

˚C

■ self-aligning linear ball bearings, closed design■ KX with sealing shields on both sides

KX..PP lip seals on both sides■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

■

˚C

■ self-aligning linear ball bearings, open design, for supported shafts

■ KXO with sealing shields on both sides KXO..PP lip seals on both sides

■ integral gap sealing strips■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

KX, KX..PP

120

351

KXO, KXO..PP12

0 35

4

4

4

2

Self-aligning linear ball bearing units

Features

Units Units – tandem arrangement

˚C ˚C

■ housing made from high strength aluminium alloy, fitted with linear ball bearing KX..PP

■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

■ housing made from high strength aluminium alloy, with two linear ball bearings KX..PP in tandem arrangement

■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

■ ■

˚C ˚C

■ housing made from high strength aluminium alloy, open design, slotted, fitted with linear ball bearing KXO..PP

■ with clearance adjustment and suitable for supported shafts

■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

■ housing made from high strength aluminium alloy, open design, slotted, with two linear ball bearings KXO..PP in tandem arrangement

■ with clearance adjustment and suitable for supported shafts

■ for operating temperatures up to +80 °C■ for shafts from 1/2� to 2�

KGX, KGX..PP

120

352

KTX, KTX..PP

120

353

KGXO, KGXO..PP

120

355

KTXO, KTXO..PP

120

356

6

6

8

8

3

Shafts

Features

Shafts■ are precision raceways for INA linear ball bearings■ are made from quenched and tempered steel with

a surface hardness of 670 +170 HV (59 +6 HRC)– the uniform hardness depth ensures a smooth transition

from the hardened surface layer to the tough core■ can be loaded up to the full load rating of INA aligning

linear ball bearings■ are produced as standard in the tolerance classes

according to the dimension table (page 10)■ have high accuracy (roundness and parallelism)■ can be supplied in single pieces up to 6 000 mm

in length – depending on the diameter– longer lengths are available by agreement– the shaft ends are chamfered after cutting to length

■ can be produced with axial or radial threaded holes for fixing

■ can also be supplied in a special version with ends that differ from the standard version

■ allow the construction of linear guidance systems with high load carrying capacity, high rigidity, high accuracy and long operating life

■ can be combined with INA linear ball bearings or INA linear ball bearing units to achieve optimally matched, ready-to-fit, particularly cost-effective shaft guidance systems

■ are used not only as raceways for INA linear ball bearings but also as:– guide rods for plain bushes– column guides for stud and yoke type track rollers– drawing and straightening rollers shafts and axles in

a wide variety of different applications.

Shafts

■ precision solid shaft made from quenched and tempered steel

■ standard version in class “L” and in corrosion resistant steel

■ diameter from 1/4� to 2�

■

■ precision solid shaft made from quenched and tempered steel

■ standard version in class “L” and in corrosion resistant steel

■ radial threaded holes for fixing, e. g. to a saddle plate■ diameter from 1/2� to 2�

WZ

120

368

WZ..PDT12

0 36

9

10

11

4

Self-aligning linear ball bearingsclosed and open designs sealing shields or contact seals on both sides

Series KXKX..PPKXOKXO..PP

KX, KX..PP

C7

C

d D1D

C

1

120

357

1) Sealing shields on both sides.2) Contact seals on both sides.3) The load ratings apply only to hardened (670 +170 HV) and ground shaft raceways.4) Load rating in main load direction.5) Load ratings according to ISO/CD 14 728-1 (maximum values).

Dimension table · Dimensions in inches

Shaftdiameter

Series Mass Dimensions

KX1)

Designation

KX..PP2)

Designation

KXO1)

Designation

KXO..PP2)

Designation lbs

d D C

1/2 KX 08 KX 08 PP – – 0,034 0,500–0,005 0,875 1,250–0,020– – KXO 08 KXO 08 PP 0,033 0,500–0,005 0,875 1,250–0,020

5/8 KX 10 KX 10 PP – – 0,088 0,625–0,005 1,125 1,500–0,020– – KXO 10 KXO 10 PP 0,089 0,625–0,005 1,125 1,500–0,020

3/4 KX 12 KX 12 PP – – 0,116 0,750–0,005 1,250 1,625–0,020– – KXO 12 KXO 12 PP 0,116 0,750–0,005 1,250 1,625–0,020

1 KX 16 KX 16 PP – – 0,244 1,000–0,005 1,563 2,250–0,020– – KXO 16 KXO 16 PP 0,244 1,000–0,005 1,563 2,250–0,020

11/4 KX 20 KX 20 PP – – 0,475 1,250–0,006 2,000 2,265–0,025– – KXO 20 KXO 20 PP 0,474 1,250–0,006 2,000 2,265–0,025

11/2 KX 24 KX 24PP – – 0,770 1,500–0,006 2,375 3,000–0,030– – KXO 24 KXO 24 PP 0,768 1,500–0,006 2,375 3,000–0,030

2 KX 32 KX 32 PP – – 1,540 2,000–0,008 3,000 4,000–0,040– – KXO 32 KXO 32 PP 0,956 2,000–0,008 3,000 4,000–0,040

Compensation of misalignments �40�

±40�

120

358

5

KXO, KXO..PPMain load direction4)

Main loaddirection

120

361

KXO, KXO..PP

C

dD

�

120

359

Fixing hole Number of ball rows

Load ratings3)5) ShaftdiameterD1 C7 C1 �

deg.

d1 t S dyn.Clbf

stat.C0 lbf

0,821 0,046 1,032–0,020 – – – – 8 210 170 1/2– – 1,032–0,020 60 0,136 – 0,625 6 2404) 2004)

1,059 0,056 1,112–0,020 – – – – 10 290 260 5/8– – 1,112–0,020 60 0,105 0,039 0,125 8 2904) 2604)

1,176 0,056 1,272–0,020 – – – – 10 430 370 3/4– – 1,272–0,020 60 0,136 0,059 0,125 8 4304) 3704)

1,469 0,068 1,886–0,020 – – – – 10 810 720 1

– – 1,886–0,020 60 0,136 0,047 0,125 8 8104) 7204)

1,886 0,068 2,011–0,025 – – – – 10 1 490 1 190 11/4– – 2,011–0,025 60 0,201 0,09 0,188 8 1 4904) 1 1904)

2,239 0,086 2,422–0,030 – – – – 10 2 090 1 550 11/2– – 2,422–0,030 60 0,201 0,09 0,188 8 2 0904) 1 5504)

2,838 0,103 3,206–0,040 – – – – 10 3 500 2 750 2

– – 3,206–0,040 60 0,265 0,09 0,312 8 3 5004) 2 7504)

Fixing holes

0,125

d1 d1 d1

s s s

15º

tt

120

360

6

Self-aligning housing unitsclosed and open designs Linear ball bearing with sealing shields or contact seals on both sides

Series KGXKGX..PPKGXOKGXO..PP

KGX, KGX..PP

H

H

3

C

T

7

C2C1

H2

53

1

H8

KAA

A

4A

120

362

1) Linear ball bearing with sealing shields on both sides.2) Linear ball bearing with contact seals on both sides.3) The load ratings apply only to hardened (670 +170 HV) and ground shaft raceways.4) Load rating in main load direction.5) Load ratings according to ISO/CD 14 728-1 (maximum values).

Dimension table · Dimensions in inches

Shaftdiameter

Series Mass Dimensions

KGX1)

Designation

KGX..PP2)

Designation

KGXO1)

Designation

KGXO..PP2)

Designation lbs

A C1 A5

�0,001

H2

�0,001

A4

1/2 KGX 08 KGX 08 PP – – 0,280 2,000 1,688 1,000 0,687 1,375

– – KGXO 08 KGXO 08 PP 0,220 2,000 1,500 1,000 0,687 –5/8 KGX 10 KGX 10 PP – – 0,520 2,500 1,938 1,250 0,875 1,750

– – KGXO 10 KGXO 10 PP 0,420 2,500 1,750 1,250 0,875 –3/4 KGX 12 KGX 12 PP – – 0,630 2,750 2,063 1,375 0,937 1,875

– – KGXO 12 KGXO 12 PP 0,530 2,750 1,875 1,375 0,937 –

1 KGX 16 KGX 16 PP – – 1,340 3,250 2,813 1,625 1,187 2,375

– – KGXO 16 KGXO 16 PP 1,190 3,250 2,625 1,625 1,187 –

11/4 KGX 20 KGX 20 PP – – 2,850 4,000 3,625 2,000 1,500 3,000

– – KGXO 20 KGXO 20 PP 2,450 4,000 3,375 2,000 1,500 –

11/2 KGX 24 KGX 24 PP – – 4,210 4,750 4,000 2,375 1,750 3,500

– – KGXO 24 KGXO 24 PP 3,720 4,750 3,750 2,375 1,750 –

2 KGX 32 KGX 32 PP – – 8,060 6,000 5,000 3,000 2,125 4,500

– – KGXO 32 KGXO 32 PP 6,180 6,000 4,750 3,000 2,125 –

7

KGXO, KGXO..PP

H

H2

8H

H

3

K3C2

C7

C

T

1

A5

�

AA

1

120

363

Mounting dimensions Load ratings3)5) ShaftdiameterH H8 C7 H3 T �

deg.

A1

�0,01

C2

�0,01

K3 dyn.4)Clbf

stat.4)C0 lbf

1,250 0,250 0,844 0,690 NIP A1 – 1,688 1,000 0,156 210 170 1/21,100 0,250 0,520 0,370 NIP A1 60 1,688 1,000 0,156 240 200

1,625 0,281 1,260 0,700 1/4-28 – 2,125 1,125 0,188 290 260 5/81,375 0,281 0,875 0,450 1/4-28 60 2,125 1,125 0,188 290 260

1,750 0,313 1,340 0,937 1/4-28 – 2,375 1,250 0,188 430 370 3/41,535 0,313 0,937 0,510 1/4-28 60 2,375 1,250 0,188 430 370

2,188 0,375 1,950 1,187 1/4-28 – 2,875 1,750 0,218 810 720 1

1,975 0,375 1,312 0,730 1/4-28 60 2,875 1,750 0,218 810 720

2,813 0,437 2,430 1,500 1/4-28 – 3,500 2,000 0,218 1 490 1 190 11/42,485 0,437 1,688 0,800 1/4-28 60 3,500 2,000 0,218 1 490 1 190

3,250 0,500 2,750 1,750 1/4-28 – 4,125 2,500 0,281 2 090 1 550 11/22,910 0,500 1,875 0,840 1/4-28 60 4,125 2,500 0,281 2 090 1 550

4,063 0,625 3,420 2,125 1/4-28 – 5,250 3,250 0,406 3 500 2 750 2

3.660 0,625 2,375 1,100 1/4-28 60 5,250 3,250 0.406 3 500 2 750

KGX, KGX..PP, KGXO, KGXO..PPMain load direction4)

Main loaddirection

Main loaddirection

120

364

8

Self-aligning tandem housing unitsclosed and open designsLinear ball bearing with sealing shields or contact seals on both sides

Series KTXKTX..PPKTXOKTXO..PP KTX, KTX..PP

H8H2

A4

H

H

3

K3

C

C2

C1

T 7

A5

AA1

120

365

1) Linear ball bearing with sealing shields on both sides.2) Linear ball bearing with contact seals on both sides.3) The load ratings apply only to hardened (670 +170 HV) and ground shaft raceways.4) Load rating in main load direction.5) Load ratings according to ISO/CD 14 728-1 (maximum values).

Dimension table · Dimensions in inches

Shaftdiameter

Series Mass Dimensions

KTX1)

Designation

KTX..PP2)

Designation

KTXO1)

Designation

KTXO..PP2)

Designation lbs

A C1 A5

�0,001

H2

�0,001

A4

1/2 KTX 08 KTX 08 PP – – 0,490 2,000 3,500 1,000 0,687 1,375

– – KTXO 08 KTXO 08 PP 0,490 2,000 3,500 1,000 0,687 –5/8 KTX 10 KTX 10 PP – – 0,940 2,500 4,000 1,250 0,875 1,750

– – KTXO 10 KTXO 10 PP 0,910 2,500 4,000 1,250 0,875 –3/4 KTX 12 KTX 12 PP – – 1,240 2,750 4,500 1,375 0,937 1,875

– – KTXO 12 KTXO 12 PP 1,180 2,750 4,500 1,375 0,937 –

1 KTX 16 KTX 16 PP – – 2,540 3,250 6,000 1,625 1,187 2,375

– – KTXO 16 KTXO 16 PP 2,430 3,250 6,000 1,625 1,187 –

11/4 KTX 20 KTX 20 PP – – 4,920 4,000 7,500 2,000 1,500 3,000

– – KTXO 20 KTXO 20 PP 4,760 4,000 7,500 2,000 1,500 –

11/2 KTX 24 KTX 24 PP – – 7,770 4,750 9,000 2,375 1,750 3,500

– – KTXO 24 KTXO 24 PP 7,580 4,750 9,000 2,375 1,750 –

9

KTXO, KTXO..PP

H8

A5

AA1

K3

H

H

�

3

C2

CT 7

C1

H2

120

366

Mounting dimensions Load ratings3)5) ShaftdiameterH H8 C7 H3 T �

deg.

A1

�0,254

C2

�0,254

K3 dyn.4)Clbf

stat.4)C0 lbf

1,250 0,250 1,750 0,687 NIP A1 – 1,688 2,500 0,156 420 340 1/21,100 0,250 1,750 0,370 NIP A1 60 1,688 2,500 0,156 480 400

1,625 0,281 2,000 0,875 1/4-28 – 2,125 3,000 0,188 580 520 5/81,375 0,281 2,000 0,450 1/4-28 60 2,125 3,000 0,188 580 520

1,750 0,313 2,250 0,937 1/4-28 – 2,375 3,500 0,188 860 740 3/41,535 0,313 2,250 0,510 1/4-28 60 2,375 3,500 0,188 860 740

2,188 0,375 3,000 1,187 1/4-28 – 2,875 4,500 0,218 1 620 1 440 1

1,975 0,375 3,000 0,730 1/4-28 60 2,875 4,500 0,218 1 620 1 440

2,813 0,437 3,750 1,500 1/4-28 – 3,500 5,500 0,218 3 000 2 380 11/42,485 0,437 3,750 0,800 1/4-28 60 3,500 5,500 0,218 3 000 2 380

3,250 0,500 4,500 1,750 1/4-28 – 4,125 6,500 0,281 4 200 3 100 11/22,910 0,500 4,500 0,840 1/4-28 60 4,125 6,500 0.281 4 200 3 100

KTX, KTX..PP, KTXO, KTXO..PPMain load direction4)

Main loaddirection

Main loaddirection

120

367

10

Precision ground shaftsSeries WZ

WZ

dia. t t1 2

.0012/ft.

120

370

1) Measurement of diameter difference.

Dimension table · Dimensions in inches

Shaftdiameter

Designation Tolerance Roundness Taper Hardness depth

Surface finish

Standard

“L” class

Standard

“S” class

Corrosion-resistant steel

Standardtolerance“L” class

Standardtolerance“S” class

t1 t21)

min max1/4 WZ 0-1/4 L WZ 0-1/4 S – –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0002 0,031 RMS 123/8 WZ 0-3/8 L WZ 0-3/8 S WZ 0-3/8 SS L –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0002 0,031 RMS 121/2 WZ 0-1/2 L WZ 0-1/2 S WZ 0-1/2 SS L –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0002 0,051 RMS 125/8 WZ 0-5/8 L WZ 0-5/8 S WZ 0-5/8 SS L –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0003 0,051 RMS 123/4 WZ 0-3/4 L WZ 0-3/4 S WZ 0-3/4 SS L –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0003 0,051 RMS 12

1 WZ 1-0/0 L WZ 1-0/0 S WZ 1-0/0 SS L –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0003 0,063 RMS 12

1-1/8 WZ 1-1/8 L – – –0,0005/–0,0010 – 0,0002 0,0003 0,063 RMS 12

1-1/4 WZ 1-1/4 L WZ 1-1/4 S – –0,0005/–0,0010 –0,0010/–0,0015 0,0002 0,0004 0,063 RMS 12

1-1/2 WZ 1-1/2 L WZ 1-1/2 S WZ 1-1/2 SS L –0,0006/–0,0011 –0,0011/–0,0016 0,0002 0,0004 0,063 RMS 12

2 WZ 2-0/0 L WZ 2-0/0 S – –0,0006/–0,0013 –0,0013/–0,0020 0,0003 0,0005 0,079 RMS 12

11

Precision ground shaftsSeries WZ..PDT

WZ..PDT

dia.

Y±1/32

L

X

120

373

Dimension table · Dimensions in inches

Shaftdiameter

Designation Hole spacing Thread size

Standard Corrosion-resistant steel X d

1/2 WZ 0-1/2 PDT WZ 0-1/2 SS PDT 4 6 –325/8 WZ 0-5/8 PDT – 4 8 –323/4 WZ 0-3/4 PDT WZ 0-3/4 SS PDT 6 10 –32

1 WZ 1-0/0 PDT WZ 1-0/0 SS PDT 6 1/4 –20

1-1/4 WZ 1-1/4 PDT – 6 5/16 –18

1-1/2 WZ 1-1/2 PDT WZ 1-1/2 SS PDT 8 3/8 –16

2 WZ 2-0/0 PDT – 8 1/2 –13

Sac

h-N

r. 00

6-78

2-05

1/M

AI 7

0 G

B-G

B 0

300.

5 ·

Prin

ted

in G

erm

any

INA Bearing Company Ltd.Forge Lane, Minworth · Sutton ColdfieldWest Midlands · B76 1APTelephone: 0121 351 3833Fax: 0121 351 7686Website: www.ina.co.ukE-mail: ina.bearing@ina.co.uk