Precision Rack & Pinion Drives

Overview:

This high quality rack & pinion product range, consisting of helical & straight tooth versions, in many sizes, shapes and materials. Typical delivery on these standard components is 2 - 4 weeks, for machine builders who require precise gearing but can't afford to wait the long lead times necessary for special gearing.

Four quality levels available, up to AGMA 12
Nine metric sizes, from module 1.0 to 10.0
Standard rack lengths up to 3.00 meters; longer travel lengths can easily be achieved by mounting the racks end-to-end
Special/modified designs are possible
Preloaded dual pinions to eliminate axis backlash
Overview of complete rack range
Overview of complete pinion range

Applications requiring precise positioning and repeatability - including traveling gantries, horizontal & vertical axis drives, pick & place robots, and replacements for long ballscrew axis drives - are particularly well suited for these drives.

Applications:

Precision Positioning Axis Drive
Material-Handling Axis
Vertical Axis Drives
Mechanically Preloaded, Zero-Backlash Axis
Traveling Gantry/Column Axis Drive
Material Feed Axis on Punch Press
Pick & Place Robots
Point-to-Point Machines

Quality Levels:

Description	Quality Level	Tooth Hardness	Relative Torque Capacity	Relative Pitch Error
Hardened & Ground	~AGMA 12	60 Rc	***	*
Quenched & Tempered	~AGMA 10	27 Rc	*	**
Induction Hardened	~AGMA 8	50 - 55 Rc	**	***

* For torque capacities, see below. *** = highest, * = lowest.

Also Available:

High-Performance Servo-Worm Reducers provide a very precise, compact positioning system. Integral pinion shafts mount directly to hollow output shaft. Backlash levels down to less than 5 arc-minute.
Preloaded Rack & Pinion Drive Systems, for high precision positioning axis where backlash can not be tolerated, are available with dual pinions to remove the backlash.

Ratings:

Module 2.0 (24 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack
16	32.0	18.8	75.6	84.8	-	-	-	-
18	36.0	24.3	88.5	99.6	-	-	-	-
20	40.0	31.7	102	118	42.44	33.9	106	134
22	44.0	38.4	107	133	-	-	-	-
25	50.0	50.2	125	148	53.05	53.8	133	168
28	56.0	60.5	137	166	59.41	64.9	145	184
30	60.0	73.0	146	175	63.66	76.7	157	199
32	64.0	85.6	155	184	67.90	88.5	168	214
36	72.0	103	170	210	76.39	111	184	236
40	80.0	138	184	236	84.88	144	212	269

Module 3.0 (29 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack
18	54.0	89.2	273	295	-	-	-	-
20	60.0	102	288	310	63.66	107	302	373
22	66.0	125	302	347	70.30	134	317	391
25	75.0	173	347	391	79.57	181	361	446
28	84.0	210	321	443	-	-	-	-
30	-	-	-	-	95.49	262	406	531
32	96.0	295	398	457	-	-	-	-
36	108.0	378	494	568	-	-	-	-
40	120.0	457	590	649	-	-	-	-

Module 4.0 (39 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack
15	-	-	-	-	63.66	151	494	568
20	80.0	262	701	789	84.88	273	719	900
22	88.0	317	775	885	93.37	328	811	988
25	100.0	424	848	981	106.10	435	885	1129
28	112.0	531	959	1106	118.84	542	996	1269
32	128.0	710	1099	1254	135.81	727	1143	1453
40	160.0	1143	1401	1475	-	-	-	-

Module 5.0 (49 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Quenched & Tempered Rack	Induction Hardened Rack	Hardened & Ground Rack
12	60.0	140	-	-	63.66	221	664	774
15	75.0	236	701	811	79.57	-	848	959
18	90.0	339	-	-	95.49	479	1070	1217
21	105.0	472	1070	1254	-	-	-	-
24	120.0	620	1239	-	127.32	885	1453	1623
25	125.0	679	1291	1475	-	-	-	-
30	150.0	996	-	-	-	-	-	-
36	-	-	-	-	190.98	1328	2213	2434

Module 6.0 (59 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack
13	78.0	-	1070	1254	82.76	310	1217	1438
20	120.0	597	1623	-	127.32	671	2065	2360
21	126.0	715	2065	2213	-	-	-	-
25	150.0	1033	2287	2655	159.15	1158	2618	3024

Module 8.0 (79 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack
12	96.0	516	774	-	-	-	-	-
15	120.0	848	1401	-	-	-	-	-
18	-	-	-	-	152.79	1401	-	5163
20	160.0	1549	3319	5680	-	-	-	-
25	200.0	2508	5532	-	-	-	-	-

Module 10.0 (99 mm Face Width)

# of Teeth z	Torque Capacity for Straight (lb.ft.): *				Torque Capacity for Helical (lb.ft.): *
# of Teeth z	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack	d (mm)	Soft Rack	Induction Hardened Rack	Hardened & Ground Rack
15	-	-	-	-	-	-	-	-
18	-	-	-	-	190.99	-	-	9958
20	200.0	2950	7376	9589	-	-	-	-

* z = number of teeth in pinion gear and d is pitch diameter of pinion gear in millimeters.
Selection should be based on peak acceleration/deceleration torque.
Information provided is subject to change without notice.

To insure proper selection, please consult the factory. If you have any questions regarding the information provided here or require more information, please call us at (800) 713-6170 or e-mail us. Our Sales and Engineering departments are ready to help you with your specific power transmission needs.