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

Module 1

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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	AH7	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSAY1-20 [DXF | DWG | 3D CAD] SSAY1-24 [DXF | DWG | 3D CAD] SSAY1-25 [DXF | DWG | 3D CAD] SSAY1-28 [DXF | DWG | 3D CAD] SSAY1-30 [DXF | DWG | 3D CAD]	1 1 1 1 1	20 24 25 28 30	6 6 6 6 6	20 24 25 28 30	22 26 27 30 32	6 6 6 6 6	S5 S5 S5 S5 S5	0.3516 0.457 0.4838 0.5654 0.6204	0.0205 0.0301 0.0328 0.0417 0.0483	3.448 4.482 4.744 5.545 6.084	0.201 0.2952 0.3217 0.4089 0.4737	0.080.18 0.120.22 0.120.22 0.120.22 0.120.22	0.01 0.02 0.02 0.03 0.03	SSAY1-20 SSAY1-24 SSAY1-25 SSAY1-28 SSAY1-30
SSAY1-32 [DXF | DWG | 3D CAD] SSAY1-35 [DXF | DWG | 3D CAD] SSAY1-36 [DXF | DWG | 3D CAD] SSAY1-40 [DXF | DWG | 3D CAD] SSAY1-45 [DXF | DWG | 3D CAD]	1 1 1 1 1	32 35 36 40 45	6 6 6 6 6	32 35 36 40 45	34 37 38 42 47	6 6 6 6 6	S5 S5 S5 S5 S5	0.676 0.76 0.7882 0.9018 1.045	0.0553 0.0668 0.071 0.0887 0.1137	6.629 7.453 7.73 8.844 10.25	0.5423 0.6551 0.6963 0.8698 1.115	0.120.22 0.120.22 0.120.22 0.120.22 0.140.26	0.04 0.04 0.05 0.06 0.07	SSAY1-32 SSAY1-35 SSAY1-36 SSAY1-40 SSAY1-45
SSAY1-48 [DXF | DWG | 3D CAD] SSAY1-50 [DXF | DWG | 3D CAD] SSAY1-55 [DXF | DWG | 3D CAD] SSAY1-56 [DXF | DWG | 3D CAD] SSAY1-60 [DXF | DWG | 3D CAD]	1 1 1 1 1	48 50 55 56 60	6 8 8 8 8	48 50 55 56 60	50 52 57 58 62	6 6 6 6 6	S5 S5 S5 S5 S5	1.132 1.19 1.336 1.365 1.482	0.1302 0.1419 0.1733 0.18 0.208	11.1 11.67 13.1 13.39 14.53	1.277 1.392 1.699 1.765 2.04	0.140.26 0.140.26 0.140.26 0.140.26 0.140.26	0.08 0.09 0.11 0.12 0.13	SSAY1-48 SSAY1-50 SSAY1-55 SSAY1-56 SSAY1-60
SSAY1-70 [DXF | DWG | 3D CAD] SSAY1-80 [DXF | DWG | 3D CAD] SSAY1-100 [DXF | DWG | 3D CAD]	1 1 1	70 80 100	8 10 10	70 80 100	72 82 102	6 6 6	S5 S5 S5	1.777 2.074 2.671	0.2873 0.3809 0.6099	17.43 20.34 26.19	2.817 3.735 5.981	0.140.26 0.140.26 0.160.32	0.18 0.23 0.37	SSAY1-70 SSAY1-80 SSAY1-100

Module 1.25

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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	AH7	C	D	E		Bending strength	Surface durability	Bending strength	Surface durability
SSAY1.25-20 [DXF | DWG | 3D CAD] SSAY1.25-24 [DXF | DWG | 3D CAD] SSAY1.25-25 [DXF | DWG | 3D CAD] SSAY1.25-30 [DXF | DWG | 3D CAD]	1.25 1.25 1.25 1.25	20 24 25 30	8 8 8 10	25 30 31.25 37.5	27.5 32.5 33.75 40	8 8 8 8	S5 S5 S5 S5	0.7325 0.9521 1.008 1.293	0.0438 0.0644 0.0702 0.1031	7.183 9.337 9.885 12.68	0.4295 0.6315 0.6884 1.011	0.080.18 0.120.22 0.120.22 0.120.22	0.03 0.04 0.05 0.06	SSAY1.25-20 SSAY1.25-24 SSAY1.25-25 SSAY1.25-30
SSAY1.25-32 [DXF | DWG | 3D CAD] SSAY1.25-35 [DXF | DWG | 3D CAD] SSAY1.25-36 [DXF | DWG | 3D CAD] SSAY1.25-40 [DXF | DWG | 3D CAD] SSAY1.25-45 [DXF | DWG | 3D CAD]	1.25 1.25 1.25 1.25 1.25	32 35 36 40 45	10 10 10 10 10	40 43.75 45 50 56.25	42.5 46.25 47.5 52.5 58.75	8 8 8 8 8	S5 S5 S5 S5 S5	1.408 1.583 1.642 1.879 2.178	0.1182 0.1428 0.1516 0.1892 0.2423	13.81 15.52 16.1 18.43 21.36	1.159 1.4 1.487 1.855 2.376	0.120.22 0.120.22 0.120.22 0.120.22 0.140.26	0.07 0.09 0.1 0.12 0.15	SSAY1.25-32 SSAY1.25-35 SSAY1.25-36 SSAY1.25-40 SSAY1.25-45
SSAY1.25-48 [DXF | DWG | 3D CAD] SSAY1.25-50 [DXF | DWG | 3D CAD] SSAY1.25-55 [DXF | DWG | 3D CAD] SSAY1.25-56 [DXF | DWG | 3D CAD] SSAY1.25-60 [DXF | DWG | 3D CAD]	1.25 1.25 1.25 1.25 1.25	48 50 55 56 60	10 12 12 12 12	60 62.5 68.75 70 75	62.5 65 71.25 72.5 77.5	8 8 8 8 8	S5 S5 S5 S5 S5	2.358 2.479 2.783 2.844 3.088	0.2774 0.3022 0.3688 0.383 0.4431	23.12 24.31 27.29 27.89 30.28	2.72 2.964 3.617 3.756 4.345	0.140.26 0.140.26 0.140.26 0.140.26 0.140.26	0.17 0.19 0.23 0.23 0.27	SSAY1.25-48 SSAY1.25-50 SSAY1.25-55 SSAY1.25-56 SSAY1.25-60
SSAY1.25-70 [DXF | DWG | 3D CAD] SSAY1.25-80 [DXF | DWG | 3D CAD]	1.25 1.25	70 80	15 15	87.5 100	90 102.5	8 8	S5 S5	3.702 4.321	0.6137 0.8132	36.3 42.37	6.018 7.975	0.140.26 0.140.26	0.37 0.48	SSAY1.25-70 SSAY1.25-80

CAUTION: Due to the thin face width, if you wish to perform secondary operations on these gears, please use care to avoid creating side runout and deformation. Be especially careful if you heat treat these gears as there is strong possibility of warping these gears.

NOTE: The items listed above as are available from stock until current inventory is exhausted. At that time the product will only be available on a made to order custom basis.

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. All dimensions shown in the above table(s) are listed in millimeters unless otherwise specified.

USEFUL HINT:

Definition of bending strength

The allowable bending strength of a gear is defined as the allowable tangential force at the pitch circle based on the mutually allowable root stress of two meshing gears under load.

Definition of surface durability

The surface durability of a gear is defined as the allowable tangential force at the pitch circle which permits the force to be transmitted safely without incurring surface failure.

Reference: JGMA (Japan Gear Manufacturer Association)

 

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