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Precision rack / CLASSIC range helical teeth

Precise and silent translation of light loads over long distances, normal duty

Precision	Material	Core hardness	Surface hardness	Teeth	Sides	∥ (mm/m)	⊥ (mm)
ISO 7	C45	>650N/mm²	20 HRC	Cut	Milled (Ra=1.6)	0.05	0.05

Standard available modules

1, 1.5, 2, 3, 4, 5, 6, 8, 10

Module	1	1,5	2	3	4	5	6	8	10
Individual pitch error (mm)	± 0.011	± 0.011	± 0.011	± 0.012	± 0.014	± 0.014	± 0.014	± 0.016	± 0.016
Cumulative pitch error (on 1,000 mm)	< 0.045	< 0.045	< 0.045	< 0.050	< 0.056	< 0.056	< 0.056	< 0.063	< 0.063

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Mod	Number of teeth	L	B	H	Ho	I	E	E'	F	F'	R	S	T	M	G	O	C	K	J	An	references
1	150	500	15	15	14	-	-	-	-	-	-	-	-	-	-	-	-	-	1	45°	CLA-H-1-500
1	300	1000	15	15	14	-	-	-	-	-	-	-	-	-	-	-	-	-	1	45°	CLA-H-1-1000
1.5	100	500	20	20	19	-	-	-	-	-	-	-	-	-	-	-	-	-	1	45°	CLA-H-1.5-500
1.5	200	1000	20	20	19	-	-	-	-	-	-	-	-	-	-	-	-	-	1	45°	CLA-H-1.5-1000
2	75	500	24	24	22	8.51	31.7	436.6	62.5	125	8	2	5.7	4	8	7	7	11	2	45°	CLA-H-2-500
2	150	1000	24	24	22	8.51	31.7	936.6	62.5	125	8	2	5.7	8	8	7	7	11	2	45°	CLA-H-2-1000
3	50	500	29	29	26	10.29	35	430	62.5	125	9	2	7.7	4	9	9	10	15	2	45°	CLA-H-3-500
3	100	1000	29	29	26	10.29	35	930	62.5	125	9	2	7.7	8	9	9	10	15	2	45°	CLA-H-3-1000
4	38	506.67	39	39	35	13.83	33.3	433	62.5	125	12	2	7.7	4	12	9	10	15	2	45°	CLA-H-4-500
4	75	1000	39	39	35	13.83	33.3	933.4	62.5	125	12	2	7.7	8	12	9	10	15	2	45°	CLA-H-4-1000
5	30	500	49	49	44	17.38	37.5	425	62.5	125	12	2	11.7	4	12	13	14	20	2	45°	CLA-H-5-500
5	60	1000	49	49	44	17.38	37.5	925	62.5	125	12	2	11.7	8	12	13	14	20	2	45°	CLA-H-5-1000
6	25	500	59	59	44	20.93	37.5	425	62.5	125	16	2	15.7	4	16	17	18	26	2	45°	CLA-H-6-500
6	50	1000	59	59	44	20.93	37.5	925	62.5	125	16	2	15.7	8	16	17	18	26	2	45°	CLA-H-6-1000
8	18	480	79	79	44	28.02	120	240	60	120	25	2	19.7	4	25	21	22	33	2	45°	CLA-H-8-500
8	36	960	79	79	44	28.02	120	720	60	120	25	2	19.7	8	25	21	22	33	2	45°	CLA-H-8-1000
10	15	500	99	99	89	35.11	125	-	62.5	125	32	2	19.7	4	32	32	33	48	2	45°	CLA-H-10-500
10	30	1000	99	99	89	35.11	125	750	62.5	125	32	2	19.7	8	32	32	33	48	2	45°	CLA-H-10-1000

Helical teeth usually transmit more torque than straight teeth. They also allow a quiter operation. On the other hand they generate axial and radial forces that require checking the correct dimensionning of your bearings / gearbox.

The table hereunder shows the transmittable torque and force, as well as radial and axial forces generated by the helical toothing.

Please note that not all gearboxes are suitable for a helical rack/pinion system. The MNT and BDB ranges feature angular-contact ball-bearings or tappered rollers bearings and can handle more important axial forces. All axial / radial capabilities of our gearboxes can be found in our datasheets.

Please note that MIJNO can also supply the pinion most adapted to your rack and gearbox selection.

Number of teeth of the pinion		Module 1	Module 1,5	Module 2	Module 3	Module 4	Module 5	Module 6	Module 8	Module 10
21	Transmittable force (Ft) (N)	360	540	970	2740	6500	12140	19620	39930	67960
	Torque (T) (Nm)	4,0	9	22	92	290	675	1310	3550	7600
	Axial force (Fa) (N)	130	190	345	975	2300	4306	6959	14162	24104
	Radial force (Fr) (N)	140	210	375	1060	2510	4700	7580	15400	26300
25	Transmittable force (Ft) (N)	260	810	1400	4110	9090	16360	25600	51520	86570
	Torque (T) (Nm)	3,4	16	35	165	480	1085	2037	5466	11500
	Axial force (Fa) (N)	92	290	500	1460	3225	5800	9080	18273	30700
	Radial force (Fr) (N)	100	315	540	1590	3510	6320	9900	19900	33400
30	Transmittable force (Ft) (N)	410	1150	2020	5880	12490	21570	34010	66730	110290
	Torque (T) (Nm)	6.5	27	65	280	795	1715	3250	8500	17600
	Axial force (Fa) (N)	145	410	715	2085	4430	6750	12100	23700	39100
	Radial force (Fr) (N)	160	445	780	2270	4825	8330	13200	25770	42600

Precision rack / CLASSIC range helical teeth

Precise and silent translation of light loads over long distances, normal duty

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