Specifications Precision grade JIS Grade N9 (JIS B 1702-1:1998) JIS Grade 5 (JIS B 1702:1976) Gear teeth Standard full depth Pressure angle 20 Material S45c Carbon Steel Heat treatment - Core hardness less than HB194 Surface hardness Surface treatment Black oxide Surface finish Hobbed Datum reference surface for gear cutting Bore

S5

Module 2

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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	AH8	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSR2-120 [ DXF | DWG | 3D CAD ] SSR2-200 [ DXF | DWG | 3D CAD ]	2 2	120 200	194 354	240 400	244 404	20 20	S5 S5	37.35 64.27	4.489 8.589	366.3 630.3	44.02 84.23	0.220.44 0.260.52	2.5 4.3	SSR2-120 SSR2-200

Module 2.5

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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	AH8	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSR2.5-120 [ DXF | DWG | 3D CAD ] SSR2.5-200 [ DXF | DWG | 3D CAD ]	2.5 2.5	120 200	245 445	300 500	305 505	25 25	S5 S5	72.94 125.5	9.021 17.23	715.3 1231	88.46 169	0.240.48 0.280.58	4.6 8.0	SSR2.5-120 SSR2.5-200

Module 3

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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	AH8	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSR3-120 [ DXF | DWG | 3D CAD ] SSR3-160 [ DXF | DWG | 3D CAD ]	3 3	120 160	296 416	360 480	366 486	30 30	S5 S5	126 171.4	15.96 23.04	1236 1681	156.5 225.9	0.260.52 0.30.64	7.8 10.6	SSR3-120 SSR3-160

NOTE: The face width of SSR and SIR corner racks are the same as that of SR, SRF and SRFD racks. By cutting and finishing the ends of corner racks, they can be connected to straight racks with machined ends.

NOTE: The allowable torques shown in the table are calculated based on the assumed usage conditions. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.