Medium-Precision Rack & Pinion Drive Systems

Medium-Precision Rack & Pinion Drive Systems

These systems utilize our our precision Planetary and Servo-Worm Reducers, to rigidly support and drive a hardened & ground pinion.  The rack used in these systems is Quenched & Tempered, which has a quality level of DIN 8 (~AGMA 10) and through-hardened teeth.

These drives are perfect for a wide range of applications, including axis drives requiring precise positioning & repeatability, traveling gantries & columns, pick & place robots, CNC routers and material handling systems.  Medium loads and duty cycles can be easily handled with these drives.

Our Automatic Lubrication Systems are highly recommended for use with these drives, providing continuous grease lubrication to the rack & pinion tooth flanks to preserve the quality and lifetime of the gearing.

  • System Precision
  • Right-Angle System
    Specifications
  • In-Line System
    Specifications

The system precision, including the pitch error and backlash, can be found below:

System Precision
Level:		 Rack Type & Class: Rack Quality
Level:		 Rack Pitch Error: Rack & Pinion
Minimum Backlash: *
Medium Quenched & Tempered
(PR)		 DIN 8
(~AGMA 10)		 < 0.100 mm
per meter		 0.04 mm

*The rack and pinion backlash depends on the alignment of the rack to the linear guides.

ZTR

Our right-angle systems utilize our High-Torque (HT), High-Performance (HP) and Economy (E) Servo-Worm Reducers, which have backlash levels down to one arc-minute, to support and drive a hardened & ground pinion shaft.  These reducers are available in six sizes and have ratios from 4.75:1 to 52:1 (higher ratios available with planetary-worm reducers).  These reducers have options for keyed, compression or flanged outputs, which rigidly support our pinion.

The maximum drive force that each system can handle (with safety factor 1.0) is listed below; this should be compared to the application peak force, which can be calculated here, or by filling out our Application Sheet.

Please click on the table values for PDF specifications:

Reducer Size: Rack & Pinion
Module: 		Pinion Shaft: # of Pinion
Teeth:		 Maximum Drive
Force:*		 Maximum Linear
Speed:
E Size 1 2 20.89.115 15 254 lb. 4,144 in/min
HP Size 3 2 20.89.020 20 795 lb. 4,144 in/min
2 20.89.330 30 530 lb. 8,288 in/min
3 20.89.320 20 530 lb. 8,288 in/min
HT Size 3 2 20.89.430 30 791 lb. 8,288 in/min
3 20.89.420 20 791 lb. 8,288 in/min
4 20.89.415 15 791 lb. 8,288 in/min
HP Size 4 2 20.89.430 30 1,124 lb. 6,631 in/min
3 20.89.420 20 1,124 lb. 6,631 in/min
4 20.89.415 15 1,124 lb. 6,631 in/min
HT Size 4 2 20.89.530 30 1,342 lb. 6,631 in/min
3 20.89.520 20 1,483 lb. 6,631 in/min
4 20.89.515 15 2,062 lb. 6,631 in/min
HP Size 5 2 20.89.530 30 1,342 lb. 4,973 in/min
3 20.89.520 20 1,483 lb. 4,973 in/min
4 20.89.515 15 1,888 lb. 4,973 in/min
HT Size 5 4 20.89.615 15 2,119 lb. 4,973 in/min
4 20.89.630 30 2,225 lb. 9,946 in/min
5 20.89.612 12 2,190 lb. 4,973 in/min
HP Size 6 4 20.89.615 15 2,119 lb. 4,973 in/min
4 20.89.630 30 2,248 lb. 9,946 in/min
5 20.89.612 12 2,190 lb. 4,973 in/min
HT Size 6 5 20.89.715 15 3,334 lb. 6,216 in/min
HP Size 7 5 20.89.715 15 3,334 lb. 4,083 in/min

*Force ratings do not include any safety factors.  Drive forces vary depending on gearbox ratio selected.

ZTR

Our ZTR & ZR Rack & Pinion Drive Systems utilize our Precision Planetary Reducers with an ISO 9409-1 output flange to provide a rigid support for a hardened & ground helical pinion.  This provides tight integration of the driven load while allowing replacement of the pinion if needed.  These systems are available in seven sizes with backlash levels down to one arc-minute and ratios from 4:1 to 100:1.

The maximum drive force that each system can handle (with safety factor 1.0) is listed below; this should be compared to the application peak force, which can be calculated here, or by filling out our Application Sheet.

Please click on the table values for PDF specifications:

Reducer Size: Rack & Pinion
Module: 		Pinion: # of Pinion
Teeth:		 Maximum Drive
Force:*		 Maximum Linear Speed
with 3,000 rpm Motor:
3 2 78.20.526 26 495 lb. 5,118 in/min
2 78.20.527 27 495 lb. 5,315 in/min
2 78.20.529 29 475 lb. 5,709 in/min
2 78.20.535 35 394 lb. 6,890 in/min
4 2 78.21.912 12 459 lb. 2,362 in/min
2 78.21.916 16 715 lb. 3,150 in/min
2 78.21.533 33 835 lb. 6,496 in/min
2 78.20.536 36 765 lb. 7,087 in/min
2 78.21.537 37 744 lb. 7,283 in/min
5 2 78.22.912 12 459 lb. 787 in/min
2 78.22.919 19 859 lb. 1,247 in/min
2 78.22.923 23 1,013 lb. 1,509 in/min
2 78.22.540 40 1,686 lb. 2,625 in/min
2 78.22.545 45 1,507 lb. 2,953 in/min
3 78.32.912 12 730 lb. 1,181 in/min
3 78.32.912 14 1,009 lb. 1,378 in/min
3 78.30.530 30 1,507 lb. 2,953 in/min
7 2 78.23.923 12 459 lb. 787 in/min
2 78.23.923 23 1,013 lb. 1,509 in/min
2 78.23.929 29 1,315 lb. 1,903 in/min
3 78.33.912 12 730 lb. 1,181 in/min
3 78.33.916 16 1,148 lb. 1,575 in/min
3 78.33.919 19 1,413 lb. 1,870 in/min
3 78.33.535 35 2,744 lb. 3,445 in/min
3 78.33.540 40 2,472 lb. 3,937 in/min
4 78.43.912 12 1,324 lb. 1,575 in/min
4 78.40.530 30 2,472 lb. 3,937 in/min
8 3 78.34.912 12 730 lb. 1,181 in/min
3 78.34.919 19 1,413 lb. 1,870 in/min
3 78.34.926 26 2,010 lb. 2,559 in/min
3 78.34.932 32 2,516 lb. 3,150 in/min
4 78.44.912 12 1.324 lb. 1,575 in/min
4 78.44.917 17 2,430 lb. 2,231 in/min
4 78.44.919 19 2,732 lb. 2,493 in/min
4 78.44.520 20 2,913 lb. 2,625 in/min
5 78.44.512 12 2,190 lb. 1,969 in/min
5 78.44.516 16 3,602 lb. 2,625 in/min
5 78.54.918 18 4,049 lb. 2,953 in/min
9
4 78.46.912 12 1,324 lb. 1,575 in/min
4 78.46.919 19 2,732 lb. 2,493 in/min
4 78.46.920 20 2,913 lb. 2,625 in/min
5 78.56.914 14 2,906 lb. 2,297 in/min
5 78.56.918 18 4,049 lb. 2,953 in/min
5 78.56.919 19 4,327 lb. 3,117 in/min
5 78.56.920 20 4,238 lb. 3,281 in/min
10
5 78.57.912 12 2,190 lb. 1,969 in/min
5 78.57.919 19 4,327 lb. 3,117 in/min

*Force ratings do not include any safety factors.  Higher forces are possible depending on gearbox ratio selected.