GTP Two - Speed Gearbox - german-tech-precision.comgerman-tech-precision.com/images/ECatalog/GTP-2G-EN.pdf · Application, Benefits, Design Modular design Technical data Motor connection

GTP2G Two - Speed Gearbox

Print No. : GTP2G_201602A EN

German Tech Precision Manufacturing Co., Ltd.

Warranty after commissioning

Chief representitive in Taiwan :

German Tech Auto Co., Ltd.

Chief representitive in P.R.China :Dynamic Power Transmission Co., Ltd.Add : No. 255 Shuangbang Road, Xujing, Qingpu District,

Shanghai, P.R.China

Postal code : 201702

Tel : 86-21-59883978

Fax : 86-21-59883979

Email : [email protected]

Website : www.gtadtc.com

Add : Floor 1, No.28, Fenggong Zhong Rd., Shengang Dist.,

Taichung City, Taiwan (R.O.C.)

Postal code : 42942

Tel : +886-4-25150566

Fax : +886-4-25152413

Email : [email protected]

Website : www.german-tech-precision.com

Application, Benefits, Design

Modular design

Technical data

Motor connection

Adaptions

Bearing life

Torsional backlash

Lubrication

Connections for lubrication

Overview Installation Drawings

Odering information

3–4

5–6

7–8

9

10–11

12

13–14

15

16

17–18

20–27

28–31

Motor output shaft

Innovative Technology, Great Value

Our innovative product is high precision two–speed gearbox (GTP–2G) for machine tools as well as customer specific applications.

Our development and production are focused on high precision and high productivity.

GTA Rotary Joint GTP 2G250GTS Spindle Gegrpox

Spindle CouplingROBA-DSmayr

CTS (Coolant Through Spindle)Inline Output

Long-type Standard Flange Output

CTS (Coolant Through Spindle)

Standard Flange Output

Special Combination DesignShaft Output

German Patent

01 02

Nm

kW

Power

rpm

doubled constant power range

rpm

ApplictaionGTP-2G Two–speed gearboxes are mainly used in machine tool main–spindle drives, test benches and applications

which high torque is needed. The gearbox can be used in turning machines and machining centers thanks to its variable installation position. The

.

gearbox is also suitable for many systems which torque increases and/or speed reduction is needed.

Torque– Power curveSpeed ranges 1:4/1:5.5 are available, constant power of main spindle can be achieved with the gearbox, depending

on the controllable range of motor. This provides high torque at low speed on the one hand and high power at high

speed on the other, allowing the cutting power of modern tools to be fully utilized.

Benefits• Energy Saving : with precise reduction mechanism and high efficiency, decrease or extend the input speed of motor

to achieve machining requirement and save energy.• Wide machining range : wide output speed, increase the flexibilities of machine tool and has no influence on

machining precision.• Increase machining torque : extend the output power and increase the output torque of motor effectively.• Wide range of machining material: low output speed and high output torque for hard materials, and high output speed

for soft materials.• High efficiency : compact design of helical gearing , provide better efficiency than spur gear with lowest noise and

optimized Space. • Modular design : with different adapter design suitable for different brands of motors.

Torque–Power Curve – e . g . GTP-2G –250

Torque

Machining Center

GTP-2G StandardWide bearing base for high radial force

Motor–gearbox in i 2 = 1.00 or

motor without gearbox

Motor–gearbox in i 2 = 4.00

Increased motor power 400%

GTP-2G INLINEShort output housing for direct mounting to spindle.

DesignGTP–2G is an innovative two speed gear box for machine tools, characterized by extremely low noise and vibration as well as excellent shifting mechanism. German Engineering GTP–2G is designed and developed by GTP’s R&D center located in Germany based on state of the art technology and abundant experience in machine tool industry. GTP–2G adopts single stage planetary gear concept with two speed shifting mechanism in order to meet various demands from worldwide machine tool industries. In contrast to conventional spur gearboxes, this planetary gearbox captivates bybenefits of the division of power to 4 planetary gears, thus achieving a extremely

compact and space saving design.

Misalignments and concentricity issues are ideally concentrated by the

floating design of the sun gear. Thus such a planetary gearbox is much

less sensitive to tolerance.The motor–gearbox unit is commonly fixed to the machine frame or bed

by using the gearbox foot mounting (Available for 2G120, 2G250,

2G300, 2G600 only).

Each gearbox has available an output side pilot for flange mounts.

For each application there is an ideal choice of output bearing with a

wide bearing base.

Variable output housings suitable for different main spindle design:

e.g. GTP –2G STANDARD with wide bearing base for belt drives

allowing high radial load. GTP–2G INLINE with short output housing

and angular contact bearings for direct drive.

In Addition, the four simultaneously meshing helical planetary gears

assure low–noise operation at high speed.

03 04

GTP-2G Design GTP-2G Design

15 10 11

9

GTP-2G 250 / 300 INLINE

Main components of gearbox:

Adapter parts :1: Drive hub

2: Adapter plate

3: Shaft seal

4: hub bearing

Housing:

5: Gearbox housing

Input:

6: Sun gear

7: Ring gear

8: Ring gear bearing

Output:

Main components of gearbox:

Adapter parts:

1: Hub seal

2: Drivehub

4: Adapater plate

Housing:

5: Drivehub

Input:

8: Sun gear

12: Ring gear

Output:

13: Output housing

14: Output bearing

15: Output bearing

16: Output shaft

7 : Planetary carrier

9 : Planetrary gear

Gearbox shifting

unit:3: Sliding sleeve

11: Brake disc

Gear shfting

unit10: Shifting unit

Lubrication:

6: Oil inlet pipe

GTP-2G800 Standard

10

5

11 12

14

13

15

16

7

8

96

1

2

3

4

3

1

4

2

5

19 20

17

18

16

6 10 11 13

12

978 14

4

5

2

1

3

8

9

7

10 11 12

13 14 15

16

9: Output housing

10: Output bearing

11: Output bearing

12: Output shaft

13: Shaft seal

14: Planetary carrier

15: Axial bearing with cup spring

Gear shifting unit :

16: Sliding sleeve 17: Sliding sleeve

bearing

18: Brake disc

Shift unit19: Shifting unit

20: Rack

05 06

GTP-2G600 StandardGTP-2G120/121 Standard

Ratio

(mm)

(KW)

(min–1)

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

2G250 2G300 2G600

Horizontal (B5)

Vertical (V1/V3)

(approx.kg)

Nominal data:

Motor frame size

Nominal power

Nominal speed

Nominal input torque (continuous operation S1)

Output torque

maximum data :

Max. Torque in Nm (intermitted loading S6 cycle

duration 10 min, ED. max. 60%)

Input

Output (max. accelarating torque)

Max. permitted input speed

in reduction ratio i≠1 direct drive i＝1

Nax. vibration value

at reference speed

Max. axial force in reduction ratio

in counter clockwise(ccw) operation

running and max. input torquesee persmissible axial force for motor shaft

Mass moment of inertia

Output

Input

Operating data:

Oil fill volume in dm3

Approx oil fill in dm3 Oil level in middle of oil sight glass is nost accurate reading

Oil level

splash lubrication

recirculating lubrication

recirculating lubrication with heat exchanger

recirculating lubrication with CLS

Oi change interval

Oil temperature

Weight:

Standard

Electrical Connection:

for shifting unit

power consumption

Supply voltage(at shift unit)

current supply at 24V

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

(min–1)

(min–1)

(min–1)

(mm/s)

(min–1)

(N)

(N)

(N)

(N)

(J in kgcm2)


HLP 68 as per ISO VG 68




for V1and V3installation position oil recirculating system is necessary

Every six months or 2000 working hours

max.120° C, depending on application, installation position, lubrication and cooling condition

160

47

1500

300/250*

300/

1200/

/

/1375

400

400

1600

2200

6300

10000

1.0

5000

4756

5288

270

570

36

2.7

93

120

24 ± 10%

5

4.00

4.91

5.00

5.50

1.00

4.00

W

V

A

1.00

4.00

4.91

5.00

5.50

1.00

4.00

4.91

5.00

5.50

≠1

1

132

39

1500

250

250

1000

1375

400

400

1600

2200

6300

10000

1.0

5000

3964

5288

270

570

36

1.5

69

120

24 ± 10%

5

100/112

19

1500

120

120

480

589

140

140

560

687

8000

12000

1.0

6000

110

144

9

1.0/1.4

43/53

120

24 ± 10%

5

2G1202G121

Customer can define bearing load and lifetime. See installation drawings or page 13 for bearing data.

1) Admissible with oil cooler, otherwise n max. for reduction ratio.2) Max. speed only permitted with oil connection at port K.

Customer can define bearing load and lifetime. See installation drawings or page 13 for bearing data.

1) Admissible with oil cooler, otherwise nmax. for reduction ratio.

3) Max. speed only permitted with integrated oil channel versions.4) Please make sure the pressure and volume of oil according operating operating instruction.* i=5.5: reduced input torque.

(mm)

(KW)

(min–1)

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

(Nm)

(min–1)

(min–1)

(min–1)

(mm/s)

(min–1)

(N)

(N)

(J in kgcm2)

Horizontal (B5)

Vertical (V1/V3)

(approx.kg)

W

V

A

≠1

1

4.00

1.00

4.00

1.00

4.00

1.00

4.00

Ratio 2G8002G801/2G802

standard

1956

1766

110

180

120

24 ± 10％

5

180/200/225

84

1000

800

800

3200

900

900

3600

5000

3.0

4000






for V1 and V3 installation position oil recirculating system is necessary

Every six months or 2000 working hours

180

63

1000

600

600

2400

3000

840

840

3360

4200

5000

5000

2.5

4000

7253

9519

5.4

177

120

24 ± 10%

5

Nominal data:

Motor frame size

Nominal power

Nominal speed

Nominal input speed(continuous operation S1)

Output torque

Maximum data:

Max. Torque in Nm (intermitted loading S6 cycle

duration 10 min, ED. max. 60%)

Input

Output(max. accelerating torque)

Max. permitted input speed

in reduction ratio i≠1

for direct drive i＝11)

max. vibration value

at reference speed

Max. axial force in redcuction ratioMax. axial force in redcuction ratio in counter clockwise(ccw)

operation running and max. input torque

see persmissible axial force for motor shaft

Mass moment of inertia

Output

Input

Operating data:

Oil fill volume in dm3

Approx oil fill in dm3 Oil level in middle of oil sight glass is nost accurate reading

Oil level

splash lubrication


recirculating lubrication with heat exchanger

recirculating lubrication with CLS

Oil change interval

Oil temperature

Weight:

Standard

Electrical connection for shifting unit:

power consumption

Supply voltage(at shift unit)

current supply at 24V

max.120 C, depending on application, installation position, lubrication and cooling

3 ) 2 ) 3 ) 2 ) 3 ) 1 )

1 )

1 )

1 )

≦

07 08

Technical Data Technical Data

s2

All the dimensions are in mm.

Installation positions

Vertical V 1

Vertical V3

Horizontal B5

S2

e2

b d

h

I

S2

e2a1

d b

I

Motor frame size:

Standard motor connection dimensions

h

d

l

b

e2

a1

EN 50347: 2001

2G120

100

100

32/38/48

80 ± 0.1

180

215

-

14

2G121

112

112

42/48

110 ± 0.1

230/250

265

-

15

2G250

132/160

132

42/48/55/60

110–0.2

230/250/300

300/350

-

18

2G300

160/180

160

55/60

110–0.2

300

350/400

-

18

2G600

180

180

65/80140–0.2

170 ± 0.2300

400

450

18

2G801

200

200

65/75/80

140–0.2170 ± 0.2

350

400

450

19

2G802

225

225

75/80

140 ± 0.2

450

500

550

19

Gearbox sizes:Shaft diameter

[mm] Key lengthKey

383242424855

5548426065

60/657580

707090909090

909090125125125125150

10x810x812x812x8

14x916x10

60 12518x1116x1014x9

12x818x1118x1118x1120x1222x14

2G120/121

2G250

2G300

2G6002G8002G8012G802

Gearbox sizesGTP-2G

Horizontal B5Shift unit on right side (view from output)

Gearbox rotated along longitudinal axis( for 2G120/2G250 2G300/2G121/2G600)

See DIN ISO 8821For a full–key balanced motorshaft both types can be used. For Siemens motors, only full–Key balanced motorshaft can be used.

2G120/ 2G121/ 2G250/ 2G300/ 2G600 G

TP

GTP

GTP

Half–key balancing Full–key balancing

hub

motor shaft

2G800 /2G801 / 2G802

09 10

Standard Motor connection Dimensions Motor output shaft with standard key

There are choice of three different output variants. The standard long bearing base output flange version

is used for belt drives, allowing high cantilever forces. For 2G300/2G800, and extended output version is

optional for even higher belt forces. Further options include short output housings as GTP-2G INLINE for

space saving direct drives. This version is supplied as a standard with angular contact bearings.

There are two types of balancing: Half-key and full-key. In the case of full-key balancing, the motor shaft

is balanced with a fitted key, the hub without. The length of the fitted key is unimportant in this instance. In

the case of half-key balance, however, the key-way is filled out with a balance compensator. The shape,

length, and position of the keyway must be adapted. For this reason, it is necessary to provide us with

details of the motor- including the relevant dimensions and balancing type-when ordering.

Note

For motor gearbox units that are fixed in the machine with the gearbox output housing/flange only, no

preload support on motor B-side is permitted.

Gearbox sizes：

Open Design

( with/ without adapter plate)

Closed Design

(with hub bearing and shaft seal)

Closed Design

(with shaft seal)

Closed design (with hub bearing and shaft seal)

There is a version with ball bearing available for certain

motors. The hub in this version is also fixed by the bearing to

prevent axial hub movement, rsp. prevent axial forces from

the helical gearing on to the motor shaft (see technical data

page 8). Assembly onto spindle motor is made easier due to a

fixed hub position as supplied by the factory.

Closed version (with shaft seal)

This version incorporates an adapter plate with shaft seal,

which means that the gearbox forms a compact, closed unit.

Open design

The open version gearbox is with or without adapter plate.

Sealing is achieved with motor shaft seal.

Input flange: (2G250 / 2G600 /2G800 )

Besides the classic motor - gearbox – adaptation (motor shaft,

key way, hub) we offer- on request- a gearbox with input flange to

mount a pulley.

The output bearings vary depending on the type and level of load

on the output shaft. Cylindrical roller bearings are used to cope

with high radial forces, e.g. in belt pulley drives. In contrast,

angular-contact ball bearings are suitable for coaxial drives, low

radial backlash or axial forces. The flexible design of the output

housing and shafts allows a range of selections.

Gearbox interface：

Gearbox output

Ø 100

Ø 118Ø 130

Ø 140Ø 150Ø 38

Ø 42Ø 55Ø 60Ø 65Ø 90Ø 180Øwithout outputØ 38 INLINE

Ø 42 INLINE

GTP-2G 2G120 2G121 2G250 2G300 2G600

+

2G800

0

0

2G801

0

0

2G802

0

0+ + +

+ = Standard0 = Option

+

0

0

0+

00

0

+0

00

0

+

0

0

Output/Motor interface Connection options

11 12

16000

14000

12000

10000

8000

6000

4000

2000

2G120

0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 Bearing B Bearing A

25000

20000

15000

10000

5000

2G250

0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

30000

25000

2G300

20000

15000

10000

5000

0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

30000

25000

20000

15000

10000

5000

0 0 10 20 30 40 50 60 70 80 90 100 110 120 130

2G300 - LA

Position[mm] Position[mm]

0

0

0

50000

40000

30000

20000

10000

2G600

0 10

20 30 40 50 60 70 80 90 100 110 120

100000 2G800

80000

60000

40000

20000

0 10

20 30 40 50 60 70 80 90 100 110 120

100000

80000

60000

40000

20000

0 10

20 30 40 50 60 70 80 90 100 110 120 130 140 150

2G800-LA

Permitted Cantilever ForcesFor standard bearing

service life = 36,000hours

Note：Take into account the motor

manufacture's permitted

cantilever forces.

Permitted Cantilever ForcesFor standard bearing

service life = 36,000hours

Note：Take into account the motor

manufacture's permitted

cantilever forces.

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

375 min-1

1 500 min-1

3 000 min-1

4 500 min-1

7 500 min-1

10 000 min-1

2G120 / 2G121

2G250 / 2G 300 / 2G 300 long nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

nab/out =

375 min-1

1 500 min-1

3 000 min-1

4 500 min-1

6 300 min-1

8 000 min-1

2G600 / 2G800 / 2G800 long

200 min-1

500 min-1

1 000 min-1

2 000 min-1

3 000 min-1

5 000 min-1

Tran

sver

se fo

rce

Tran

sver

se fo

rce

Bearing B Bearing A

Bearing B Bearing A

Bearing B Bearing A

Bearing B Bearing A

Bearing B Bearing A

Bearing B Bearing A

Versions and Lifetime Calculation based on XY-methodBelt must be between output bearings

Versions and Lifetime Calculation based on XY-methodBelt must be between output bearings

13 14

Application and Examples

Splash type lubricationThe standard gearbox version B5 has splash type lubrication. Splash type lubrication is suitable for intermittent operation. In this instance, frequent gear changes, varying speeds and idle time (e. g. due to retooling) are prerequisite.

Recirculating lubricationThe 2G120/2G121/2G250/2G300/2G600 gearboxes(vertical V1 and V3 installation positions) require recirculating lubrication. In this instance, the type of recirculating lubrication depends on the operating temperature levels required.

The 2G800/2G801/2G802 gearboxes must always be operated with recirculating lubrication (refer to installation drawings).

Forced recirculating lubricationSome applications require a very low operating temperature level. Forced recirculating lubrication is recommended in such instances. Figures on page 17/18 show the possible oil inlet and outlet positions on the gearbox. Please refer to the relevant installation drawings for detailed dimensions.

Standard recirculating lubrication in V1/B5 with oil tank installationThe oil inlet is attached in place of the oil drain plug.The oil flow rate is 2.5dm3 /min.(only for2G120/2G121/2G250/2G300); 3.0dm3 /min.(only for 2G600) ; 3.0dm3 /min. (only for 2G800). In the case of V3 vertical installation position, the lubrication oil can be supplied in either radial direction or centrally.

The tank of the pump unit must be ventilated. Oil back pressure in the return pipe to the gearbox must be avoided (min. 20mm). The tank capacity should be at least ten times the recirculating oil quantity. A 60μm filter and pressure limitation valve should also be used as a safeguard.

A heat exchanger is installed in the recirculating lubrication system to assure additional temperature reduction. For best cooling results without any influence on lubrication, various connection parts for different installation positions and operating modes are provided.

NoteFor continuous operation in direct drive on gear change per hour is mandatory with a short turn in reduction ratio. If this is impossible please request special solution.

Torsional backlashTwo backlash classes in reduction

mode are available:

Class 2：

Normal torsional backlash < 20 arcmin

Class 1：

Reduced torsional backlash < 15 arcmin

*Torsional backlash in 2G800 / 801 / 802

Class 3：

Normal torsional backlash < 40 arcmin

Extreme Milling Work

Class 2 : Normal torsional backlash<20 arcmin For

Lathes, milling machines and machining centers used

to execute extreme milling work, e.g. tool side milling

cutters with very coarse index/division (interrupted

cutting), workpieces made from tough material, milling

of ribbed workpieces.

Highly-dynamic Machine tools

Class 1 : Reduced torsional backlash<15 arcmin as

Class 2 : except in lightweight highly-dynamic machine

tools incorporating components with high internal

elasticity; designed to prevent resonance

vibration.

Lubrication

1615

Installation position

V1（closed version）

V3

B5

B5 turned*

Oil inlet*

M (1.0 dm3/min)

K/R and/or L/S (1.5 dm3/min)

K/R and/or L/S (1.5 dm3/min)

P (1.0 dm3/min)

G (2.5 dm3/min) or

F (2.5 dm3/min)

G or F (2.5 dm3/min)

Oil outlet*

1.5 bar

1.5 bar

1.5 bar

1.5 bar

D/E

H

D/E

H

Max. pressure

2G120 / 2G121

*View toward gearbox output :

D/G = Mainly counter clockwise rotation

E/F = Mainly clockwise rotation

Note: Gear-Box operating at permitted highest speed:- -Please make sure the minimum flow-rate is 3dm3/min and the minimum oil pressure is 3bar when you only use one channel (K port or L port) for channel lubrication system- -If you use two channel (K port and L port) for channel lubrication system ,the minimum flow-rate is 2.5dm3/min and oil pressure is 2.5bar。

*View toward gearbox output :

D/G = Mainly counter clockwise rotation

E/F = Mainly clockwise rotation

In V1/V3 recirculating lubrication is necessary for 2G250/300.

M (1.0 dm3/min)K or Ｒ(1.5 dm3/min)L additional possible

Ｘ

Ｇ(2.5 dm3/min)or

Ｆ(2.5 dm3/min)

G or F

P (1.0 dm3/min)K or R (1.5 dm3/min) L additional possible

M (0.5 dm3/min)K (2.5 dm3/min)

idem

M (0.5 dm3/min)

K (2.5 dm3/min)

idem

X

2G250 / 2G300 / 2G600 2G800

Installation Position Oli inlet*

3 bar5 bar

idem

3 bar5 bar

idem

X

Oil inlet* Oil outlet*

V1, V3 （closed version）

V1, V3 （open version）

B5

B5 turned*

V3

D/Eor

Ｇ/Ｆ

idem

Ｇ/ＦorＤ

idem

X

1.5 bar

1.5 bar1.5 bar

1.5 bar

1.5 bar

X

Oil outlet*

D/E

D/E

H

H

X

I

R

H

N

M P

LD

F

K

E

G

Note:

M

P

SR

K

E

G

H

L

D

F

2G250 / 2G300 / 2G600 2G800

O

P

LD

E K

I

F

H

G

M

Max. pressure

Max. pressure

Gear-Box operating at permitted highest speed:- -Please make sure the minimum flow-rate is 3dm3/min and the minimum oil pressure is 3bar when you only use one channel (K port or L port) for channel lubrication system- -If you use two channel (K port and L port) for channel lubrication system ,the minimum flow-rate is 2.5dm3/min and oil pressure is 2.5bar

Connections for recirculating lubrication Connections for recirculating lubrication

17 18

STA

ND

AR

DS

HIF

TIN

G U

NIT

WIT

HO

UT

NE

UTR

AL

PO

SIT

ION

SH

IFTI

NG

UN

IT W

ATTS

120

W A

T 24

VD

C

2G12

0 IN

LIN

E

STA

ND

AR

D

OPT

ION

OU

TPU

T SH

AFT

BA

LAN

CE

WIT

H K

EY

KE

Y A

10x8

x70

ΦM

A*M

OTO

R D

IME

NS

ION

*) A

SS

UM

ED

OF

RE

SU

LTIN

G

PU

LLE

Y FO

RC

E F

OR

BE

AR

ING

CA

LCU

LATI

ON

78

209

M10

X1

4

M12

X1.

5

208

3.5

M42

X1.

5

M8

M12

X1.

5

160

10812

M42

X1.

5

9292

6363

8989

17

45°

6X60

°

215

80

250

131

2510

15

5

M16

X1.

5

100 k6

188

190 g6

100

116.

5

3

13

15

28

15

273.

5

65.5

125.

1

17.4

162.

5

80

38 k

6

208

38 k

6

70 80

10

155.

2

196

5.1

14

MA*

30

98

117.

5

42

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2G120 + Inline page 20




2G600 page 24

2G800 page 25

2G801 page 26

2G802 page 27

Installation Drawings

Installation Drawing : 2G120 Standard + Inline

19 20

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:Installation Drawing 2G121 Standard + Inline :Installation Drawing 2G121 Standard + Inline

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T A

ND

CO

NTA

CT

BU

SH

ING

ES

AR

E S

UP

PLI

ED

LO

OS

E

2 G

1 2 3 4 5 6 7 8 9 10 11

3

1

456

3

4

12

09

11

08

3

4

B

C

L

P

G

C

B

1

2

3

4

9

1

4

Standard torsional backlash max. 20 arcmin

Reduced torsioanl backlash max. 15 arcmin

42mm

V1/V3/B5/B5 (rotate along right axis direction)

V3 Central oil supply in Output shaft central /

Motor shaft dimension "d"

48mm

Gearbox output torsional backlash

28mm

32mm

38mm

a1=38mm (2G120 / 2G121) INLINE

100/i1=4.91

112/i1=4.00

112/i1=4.91

Output bearing :

Roller bearing / ball bearingAngular contact bearing

Gearbox output :

a1=38mm

a1=100mm

a1=38mm smooth shaft, without key

a1=38mm smoothshaft, without key (2G120/2G121) INLINE

installation position :

Closed with hub, RWDR1)*

*Gearbox type :

for motor frame size / ratio

100/i1=4.00

1) RWDR=Radial shaft seal Note:

* Motor-specific, on request

Two-speed gearbox

Motor balancing :

Wichout key way

Half-key-250 for 121Half-key

Gearbox interface :

Closed with hub, hub bearing, RWDR1)*

Full-key-230 for 121

Full-key

Radial supply in bearing housing

Installation Drawing : 2G802 StandardGTP- 2GStandard, Inline Ordering numbers for gearbox types : 2G120/2G121

27 28

G2

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Note :1) RWDR= Radial shaft seal* motor-specific, on request

Two-speed gearbox

34

Motor balancing :

Full-key-2301Wichout key way

Full-key-2505Half-key-230

6Half-key-250

F

J

K

L

N

H

M

P

a1=130mm wide bearing base R

G

a1=55mm smooth shaft without key, INLINE

a1=55mm (2G300)

a1=42mm smooth shaft without key, INLINE

a1=42mm INLINE

Gearbox output :

a1=118mm(2G250)

a1=130mm(2G300)

a1=55mm mooth shaft without key

a1=42mm smooth shaft without key

a1=42mm(2G250)

Gearbox output torsional torque : 34

Standard torsional backlash max. 20 arcminReduced torsional backlash max. 15 arcmin

15

171920

Gearbox type :


132/i1=4

132/i1=5.5

160/i1=4 2G250160/i1=4 2G300

212223

160/i1=5.5 2G250160/i1=5.5 2G300other

3

4Spindle ball bearing 6

Angular contact bearing

Roller bearing

Output bearing :

B5 splash type DC

Installation position :

V1 / V3 / B5 / B5 (rotating along right axis)

2G250 2G30001234


without hub42mm 55mm48mm 48mm55mm 42mm60mm 60mm

3

4Closed with hub, RWDR1)*


Gearbox interface :

2 G

1 2 3 4 5 6 127 8 9 10 11

4

5

3

30

31

40

4142

43

3

4

J

M

H

C

1

2

3

4

5

55x110mm 6

1

3

80x170mm

Gearbox output torsioanl backlash :

75x140mm

65x140mm

70x140mm

a1=65mm

180/i1=4.00 spigot Ø300mm



Output bearing :

Roller bearing

Angular contact bearing

Gearbox output :

a1=150mm (2G600)

a1=65mmsmooth shaft without key


B5 / V1 / V3


60x140mm



Full- key

Half-key *

Gearbox interface :


Note :1) RWDR = Radial shaft seal* motor-specific, on request

Two-speed gearbox

Motor balancing :

Gearbox type :

Standard backlash max. 30 arcmin

Reduced backlash max. 20 arcmin

Channel Lubrication System C.L.S.

Neutral position



Channel Lubrication System C.L.S. M

Neutral position N

Oil Level sensor S

M

N

29 30

GTP- 2G Standard, INLINE Ordering numbers for gearbox types : 2G250/2G300 Ordering numbers for gearbox types : 2G600

GTP- 2G Standard, INLINE

For quick response to your inquiry please provide us the following data by:Fax: +886-4-25152413

E-Mail : [email protected] [email protected]

f1

d b1

s1 l

□ Motor shaft with keyway

□ Motor shaft with shaft seal

□ Full-key balanced motor shaft

2.GTP-2G type:

□ 2G120

□ 2G600

□ 2G250

□ 2G801

□ 2G300

□ 2G802

1. Motor (with motor data sheet)

motor brand :

type :

size :

nominal power (kW) :

max. torque (Nm) :

motor operating speed n1 - n2 (rpm) at constant power :

max. speed (rpm) :

motor shaft diameter d (mm) :

motor shaft length l (mm) :

pilot diameter b1 (mm) :

pilot width f1 (mm) :

pcd e1 (mm) :

hole diameter s1 (mm) :

fitting key lxbxh (mm) :

□ Motor sahft without shaft sel

□ Half-key balanced motor shaft

□ 2G121

□ 2G800

2 G

1 2 4 5 6 7 — 8 9 10 11 12 — 13

4

5

2

4

5

9

50

60

70

1

H

L

J

R

C

B

60mm 1

65mm 2

3

4

5

1

N

Input flange(Ø=180k6)

V3

70mm

Backlash on gearbox output :

Normal backlash max. 40 arcmin

Neutral position :

Motor shaft diameter "d"

75mm

80mm


V1/B5

Gearbox output:

a1=65mm

a1=65mm without key

a1=180mm

a1=180mm wide bearing base

without brake

Open with hub and adapter plate*

Gearbox type :

motor frame size/ratio




Brake :

Closed with hub and RWDR1)*

1)RWDR= Radial shaft seal * motor data, on request

Two-speed gearbox

Motor balancing :

Full-key

Half-key*

Gearbox interface

Open with hub

GTP- 2GStandard, INLINEOrdering number for 2G800/801/802

Check list

31 32

standard option

gearbox interface □ open □ with adpater plate and shaft seal

□ with input flange

(2G300/600/800)

□ 4.00 □ 5.0 (2G600)

□ 5.5 (2G250/300)

□ 4.91 (2G120/121)

Installation position □B5 □B5 shifting unit on the right □ V1 □ V3

Output bearings □ Roller bearing □ Angular-contact ball bearing

□ self aligning and roller

bearing (2G800/801/802)

Lubrication system □ Splash type lubrication □ recirculating lubrication with oil tank

□ Recirculating lubrication with heat exchanger

Gearbox output

Torsional backlash at gearbox output (2G800/801/802)

Subject to technical change without notice.

Ratio i

Gearbox with output flange

□ 100mm (2G120/121)

□ 118mm (2G250)

□ 130mm (2G300)

□ 150mm (2G600)

□ 180mm (2G800/801/802)

Gearbox with output shaft

□ 38mm (2G121/121) INLINE

□ 42mm (2G250/300) INLINE

□ 42mm (2G250/300)

□ 55mm (2G300)

□ 65mm (2G600/800/801/802)

Annual quantity:Ordering no.:Applictaion:

□ ≦20 arcmin □ ≦15arcmin □ ≦40arcmin

1. Warranty period: two years warranty since the date of installation on customer’s machine.

2. German Tech Auto Co., Ltd. provides training for installation, installation instructions and first installation

check, for ensuring the correctness of installation and operation.

3. Customer must ensure that the following dimensions and data should comply with the installation

instructions:

·All the dimensions of the motor

·Installation dimension of the hub

·Stability of the power supply

·Correctness of the PLC program

·Correctness of the lubrication oil circuit and stability of the flow rate, use right oil type and replace

the oil regularly.

＊ Above specifications and data please refer to each chapters of installation instruction.

＊ All of application warranty is only valid after installation, power supply for shifting, PLC program,

layout of lubrication and flow rate have been confirmed by GTA technical engineer.

＊ After confirming installation, power supply for shifting, PLC program, layout of lubrication and

flow rat, if any modification need reconfirm by GTA technical engineer.

4. There will be no warranty if customer cannot reach above regulations, accordingly GTA will charge

customer for the service cost

5. Damages due to natural and man-made calamities, installation and operation error would not be

covered by warranty.

33

GTP- 2GTwo Speed Spindle gearbox Warranty Clause

Documents

GTP Two - Speed Gearbox - german-tech-precision.comgerman-tech-precision.com/images/ECatalog/GTP-2G-EN.pdf · Application, Benefits, Design Modular design Technical data Motor connection