Specifications Precision grade JIS Grade N8 (JIS B 1702-1:1998) JIS Grade 4 (JIS B 1702:1976) Core hardness HB165194 Gear teeth Standard full depth Surface hardness Pressure angle 20 Surface treatment Black oxide Material S45C Surface finish Hobbed Heat treatment - Datum reference surface for gear cutting Bore

S5 S6

Module 1

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH7	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSA1-20 [ DXF| DWG| 3D CAD] SSA1-24 [ DXF| DWG| 3D CAD] SSA1-25 [ DXF| DWG| 3D CAD] SSA1-28 [ DXF| DWG| 3D CAD] SSA1-30 [ DXF| DWG| 3D CAD]	1 1 1 1 1	20 24 25 28 30	8 8 8 8 8	20 24 25 28 30	22 26 27 30 32	10 10 10 10 10	S5 S5 S5 S5 S5	0.586 0.7616 0.8064 0.9423 1.034	0.0334 0.05 0.0547 0.0695 0.0805	5.747 7.469 7.908 9.241 10.14	0.3275 0.4903 0.5364 0.6816 0.7894	0.080.18 0.120.22 0.120.22 0.120.22 0.120.22	0.02 0.03 0.04 0.04 0.05	SSA1-20 SSA1-24 SSA1-25 SSA1-28 SSA1-30
SSA1-32 [ DXF| DWG| 3D CAD] SSA1-35 [ DXF| DWG| 3D CAD] SSA1-36 [ DXF| DWG| 3D CAD] SSA1-40 [ DXF| DWG| 3D CAD] SSA1-45 [ DXF| DWG| 3D CAD]	1 1 1 1 1	32 35 36 40 45	8 8 8 8 8	32 35 36 40 45	34 37 38 42 47	10 10 10 10 10	S5 S5 S5 S5 S5	1.127 1.267 1.314 1.503 1.742	0.0922 0.1114 0.1183 0.1478 0.1894	11.05 12.42 12.89 14.74 17.08	0.9042 1.092 1.16 1.449 1.857	0.120.22 0.120.22 0.120.22 0.120.22 0.140.26	0.06 0.07 0.08 0.1 0.12	SSA1-32 SSA1-35 SSA1-36 SSA1-40 SSA1-45
SSA1-48 [ DXF| DWG| 3D CAD] SSA1-50 [ DXF| DWG| 3D CAD] SSA1-55 [ DXF| DWG| 3D CAD] SSA1-56 [ DXF| DWG| 3D CAD] SSA1-60 [ DXF| DWG| 3D CAD]	1 1 1 1 1	48 50 55 56 60	8 10 10 10 10	48 50 55 56 60	50 52 57 58 62	10 10 10 10 10	S5 S5 S5 S5 S5	1.887 1.983 2.226 2.275 2.47	0.217 0.2365 0.2889 0.3 0.3467	18.5 19.45 21.83 22.31 24.22	2.128 2.319 2.833 2.942 3.4	0.140.26 0.140.26 0.140.26 0.140.26 0.140.26	0.14 0.15 0.18 0.19 0.22	SSA1-48 SSA1-50 SSA1-55 SSA1-56 SSA1-60
SSA1-70 [ DXF| DWG| 3D CAD] SSA1-80 [ DXF| DWG| 3D CAD] SSA1-100 [ DXF| DWG| 3D CAD] SSA1-120 [ DXF| DWG| 3D CAD]	1 1 1 1	70 80 100 120	10 10 10 10	70 80 100 120	72 82 102 122	10 10 10 10	S5 S5 S5 S5	2.962 3.457 4.452 5.452	0.4788 0.6349 1.017 1.495	29.05 33.9 43.66 53.47	4.695 6.226 9.973 14.66	0.140.26 0.140.26 0.160.32 0.160.32	0.3 0.39 0.61 0.88	SSA1-70 SSA1-80 SSA1-100 SSA1-120

Module 1.5

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Web thickness	Web O.D.	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH7	B	C	D	E	F	H	I		Bending strength	Surface durability	Bending strength	Surface durability
SSA1.5-20 [ DXF| DWG| 3D CAD] SSA1.5-24 [ DXF| DWG| 3D CAD] SSA1.5-25 [ DXF| DWG| 3D CAD] SSA1.5-28 [ DXF| DWG| 3D CAD] SSA1.5-30 [ DXF| DWG| 3D CAD]	1.5 1.5 1.5 1.5 1.5	20 24 25 28 30	10 10 10 10 10	- - - - -	30 36 37.5 42 45	33 39 40.5 45 48	15 15 15 15 15	- - - - -	- - - - -	- - - - -	S5 S5 S5 S5 S5	1.978 2.571 2.722 3.18 3.49	0.1177 0.1766 0.1934 0.2457 0.2842	19.4 25.21 26.69 31.18 34.22	1.154 1.732 1.897 2.409 2.787	0.120.22 0.140.26 0.140.26 0.140.26 0.140.26	0.07 0.11 0.12 0.15 0.17	SSA1.5-20 SSA1.5-24 SSA1.5-25 SSA1.5-28 SSA1.5-30
SSA1.5-32 [ DXF| DWG| 3D CAD] SSA1.5-35 [ DXF| DWG| 3D CAD] SSA1.5-36 [ DXF| DWG| 3D CAD] SSA1.5-40 [ DXF| DWG| 3D CAD] SSA1.5-45 [ DXF| DWG| 3D CAD]	1.5 1.5 1.5 1.5 1.5	32 35 36 40 45	10 10 10 15 15	- - - - -	48 52.5 54 60 67.5	51 55.5 57 63 70.5	15 15 15 15 15	- - - - -	- - - - -	- - - - -	S5 S5 S5 S5 S5	3.802 4.275 4.434 5.073 5.88	0.3255 0.393 0.417 0.5201 0.6656	37.28 41.92 43.48 49.75 57.66	3.192 3.854 4.089 5.1 6.527	0.140.26 0.140.26 0.140.26 0.140.26 0.160.32	0.2 0.24 0.26 0.31 0.4	SSA1.5-32 SSA1.5-35 SSA1.5-36 SSA1.5-40 SSA1.5-45
SSA1.5-48 [ DXF| DWG| 3D CAD] SSA1.5-50 [ DXF| DWG| 3D CAD] SSA1.5-55 [ DXF| DWG| 3D CAD] SSA1.5-56 [ DXF| DWG| 3D CAD] SSA1.5-60 [ DXF| DWG| 3D CAD]	1.5 1.5 1.5 1.5 1.5	48 50 55 56 60	15 15 15 15 15	- - - - -	72 75 82.5 84 90	75 78 85.5 87 93	15 15 15 15 15	- - - - -	- - - - -	- - - - -	S5 S5 S5 S5 S5	6.367 6.694 7.513 7.678 8.338	0.762 0.8308 1.016 1.056 1.221	62.44 65.65 73.68 75.29 81.77	7.473 8.147 9.963 10.36 11.97	0.160.32 0.160.32 0.160.32 0.160.32 0.160.32	0.46 0.5 0.61 0.63 0.7	SSA1.5-48 SSA1.5-50 SSA1.5-55 SSA1.5-56 SSA1.5-60
SSA1.5-70 [ DXF| DWG| 3D CAD] SSA1.5-80 [ DXF| DWG| 3D CAD] SSA1.5-100 [ DXF| DWG| 3D CAD]	1.5 1.5 1.5	70 80 100	15 15 15	- - 70	105 120 150	108 123 153	15 15 15	- - 3	- - 9	- - 133	S5 S5 S6	9.997 11.67 15.03	1.69 2.243 3.616	98.04 114.4 147.4	16.57 22 35.46	0.160.32 0.160.32 0.200.38	1 1.2 1.6	SSA1.5-70 SSA1.5-80 SSA1.5-100

CAUTION: When opening the bore to a larger size, please design the maximum bore so that the tooth strength is less than the strength of remaining material. Otherwise the internal stresses on the gear will cause premature failure of the geartrain. The minimum clearance between the bore and the tooth root should be 1.5 times the tooth height.

NOTE: The allowable torques shown in the table are the calculated values according to JGMA Standards 401-01 and 402-01. The backlash values shown in the table are the theoretical values of a pair of identical gears in mesh.

 

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