ATLANTA Rack & Pinion Drive Ratings

ATLANTA
DRIVE
SYSTEMS

Rack & Pinion Drive Ratings

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The following tables gives the torque ratings (in lb.ft.) for various racks using a hardened & ground pinion. Selection should be based on peak acceleration/deceleration force. Service factors need to be applied to these ratings to adjust for duty cycle and lubrication; for more information on selection, please follow this link.

To see dimensions of the racks, click on the rack type in each table.

Module 2.0 (Face Width = 24 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Quenched & Tempered Rack 33 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Quenched & Tempered Rack 38 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
15	30.0	16.2	66.4	-	-	-	-	-
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 (Face Width = 29 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Quenched & Tempered Rack 33 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Quenched & Tempered Rack 38 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
15	45.0	46.5	64.2	-	-	-	-	-
18	54.0	89	273	295	-	-	-	-
20	60.0	102	288	310	63.66	107	302	373
22	66.0	125	302	347	70.03	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 (Face Width = 39 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Quenched & Tempered Rack 33 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Quenched & Tempered Rack 38 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
15	-	-	-	-	63.66	151	494	568
18	72.0	214	642	-	76.39	225	664	-
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	1,129
28	112.0	531	959	1,106	118.84	542	996	1,269
32	128.0	710	1,099	1,254	135.81	727	1,143	1,453
40	160.0	1,143	1,401	1,475	169.77	1,217	1,453	-

Module 5.0 (Face Width = 49 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Quenched & Tempered Rack 33 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Quenched & Tempered Rack 38 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
12	60.0	140	-	-	63.66	221	664	774
15	75.0	236	701	811	79.58	-	848	959
18	90.0	339	-	-	95.49	479	1,070	1,217
21	105.0	472	1,070	1,254	-	-	-	-
24	120.0	620	1,239	-	127.32	885	1,453	1,623
25	125.0	679	1,291	1,475	-	-	-	-
30	150.0	996	-	-	-	-	-	-
36	-	-	-	-	190.98	1,328	2,213	2,434

Module 6.0 (Face Width = 59 mm)
# of Pinion Teeth	Maximum Torque for Straight (lb.ft.): *				Maximum Torque for Helical (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Soft Rack 25 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Soft Rack 47 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
13	78.0	-	1,070	1,254	82.76	310	1,217	1,438
20	120.0	597	1,623	-	127.32	671	2,065	2,360
21	126.0	715	2,065	2,213	-	-	-	-
25	150.0	1,033	2,287	2,655	159.15	1,158	2,618	3,024

Module 8.0 (Face Width = 79 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Soft Rack 25 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Soft Rack 47 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
12	96.0	516	774	-	-	-	-	-
15	120.0	848	1,401	-	-	-	-	-
18	-	-	-	-	152.79	1,401	-	5,163
20	160.0	1,549	3,319	5,680	169.77	1,844	-	-
25	200.0	2,508	5,532	-	-	-	-	-

Module 10.0 (Face Width = 99 mm)
# of Pinion Teeth	Maximum Torque for Straight Tooth (lb.ft.): *				Maximum Torque for Helical Tooth (lb.ft.): *
# of Pinion Teeth	Pinion Diameter (mm)	Soft Rack 25 Series	Induction Hardened Rack 34 Series	Hardened & Ground Rack 28 Series	Pinion Diameter (mm)	Soft Rack 47 Series	Induction Hardened Rack 39 Series	Hardened & Ground Rack 29 Series
15	-	-	-	-	-	-	-	-
18	-	-	-	-	190.99	-	-	9,958
20	200.0	2,950	7,376	9,589	-	-	-	-

* These ratings assume adequate lubrication at the rack & pinion tooth flanks. Information provided is subject to change without notice.