Specifications Precision grade JIS Grade N9 (JIS B 1702-1:1998) JIS Grade 5 (JIS B 1702:1976) Core hardness HRR115120 Gear teeth Standard full depth Surface hardness Pressure angle 20 Surface treatment - Material MC901 Nylon Surface finish Hobbed Heat treatment - Datum reference surface for gear cutting Bore

S1 S5

Module 2.5

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH8	B	C	D	E	F	G		Bending strength	Bending strength
PS2.5-12 [ DXF| DWG| 3D CAD] PS2.5-13 [ DXF| DWG| 3D CAD] PS2.5-14 [ DXF| DWG| 3D CAD] PS2.5-15 [ DXF| DWG| 3D CAD] PS2.5-16 [ DXF| DWG| 3D CAD]	2.5 2.5 2.5 2.5 2.5	12 13 14 15 16	10 10 10 12 12	23 25 25 30 32	30 32.5 35 37.5 40	35 37.5 40 42.5 45	25 25 25 25 25	12 12 12 12 12	37 37 37 37 37	S1 S1 S1 S1 S1	0.4474 0.5157 0.5887 0.6543 0.7231	4.387 5.057 5.773 6.416 7.091	0.20.36 0.20.36 0.20.36 0.20.36 0.20.36	0.026 0.027 0.031 0.034 0.037	PS2.5-12 PS2.5-13 PS2.5-14 PS2.5-15 PS2.5-16
PS2.5-18 [ DXF| DWG| 3D CAD] PS2.5-20 [ DXF| DWG| 3D CAD] PS2.5-22 [ DXF| DWG| 3D CAD] PS2.5-24 [ DXF| DWG| 3D CAD] PS2.5-25 [ DXF| DWG| 3D CAD]	2.5 2.5 2.5 2.5 2.5	18 20 22 24 25	12 12 12 12 12	38 40 44 48 50	45 50 55 60 62.5	50 55 60 65 67.5	25 25 25 25 25	12 12 12 12 12	37 37 37 37 37	S1 S1 S1 S1 S1	0.8442 0.9775 1.105 1.233 1.303	8.279 9.586 10.84 12.09 12.78	0.20.36 0.20.36 0.220.38 0.220.38 0.220.38	0.074 0.065 0.084 0.096 0.1	PS2.5-18 PS2.5-20 PS2.5-22 PS2.5-24 PS2.5-25
PS2.5-26 [ DXF| DWG| 3D CAD] PS2.5-28 [ DXF| DWG| 3D CAD] PS2.5-30 [ DXF| DWG| 3D CAD]	2.5 2.5 2.5	26 28 30	12 12 12	55 60 65	65 70 75	70 75 80	25 25 25	12 12 12	37 37 37	S1 S1 S1	1.374 1.502 1.633	13.47 14.73 16.01	0.220.38 0.220.38 0.220.38	0.12 0.15 0.18	PS2.5-26 PS2.5-28 PS2.5-30

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Total length	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH8	C	D	E	G		Bending strength	Bending strength
PSA2.5-32 [ DXF| DWG| 3D CAD] PSA2.5-35 [ DXF| DWG| 3D CAD] PSA2.5-36 [ DXF| DWG| 3D CAD] PSA2.5-40 [ DXF| DWG| 3D CAD] PSA2.5-45 [ DXF| DWG| 3D CAD]	2.5 2.5 2.5 2.5 2.5	32 35 36 40 45	15 15 15 15 15	80 87.5 90 100 112.5	85 92.5 95 105 117.5	25 25 25 25 25	25 25 25 25 25	S5 S5 S5 S5 S5	1.774 1.993 2.068 2.361 2.731	17.4 19.54 20.28 23.15 26.78	0.220.38 0.220.38 0.220.38 0.220.38 0.240.4	0.16 0.16 0.17 0.18 0.28	PSA2.5-32 PSA2.5-35 PSA2.5-36 PSA2.5-40 PSA2.5-45
PSA2.5-48 [ DXF| DWG| 3D CAD] PSA2.5-50 [ DXF| DWG| 3D CAD] PSA2.5-55 [ DXF| DWG| 3D CAD] PSA2.5-60 [ DXF| DWG| 3D CAD]	2.5 2.5 2.5 2.5	48 50 55 60	15 15 15 15	120 125 137.5 150	125 130 142.5 155	25 25 25 25	25 25 25 25	S5 S5 S5 S5	2.961 3.118 3.476 3.844	29.04 30.58 34.09 37.7	0.240.4 0.240.4 0.240.4 0.240.4	0.32 0.36 0.42 0.51	PSA2.5-48 PSA2.5-50 PSA2.5-55 PSA2.5-60

Module 3

Catalog No.	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH8	B	C	D	E	F	G		Bending strength	Bending strength
PS3-12 [ DXF| DWG| 3D CAD] PS3-13 [ DXF| DWG| 3D CAD] PS3-14 [ DXF| DWG| 3D CAD] PS3-15 [ DXF| DWG| 3D CAD] PS3-16 [ DXF| DWG| 3D CAD]	3 3 3 3 3	12 13 14 15 16	12 12 12 14 14	28 30 32 36 38	36 39 42 45 48	42 45 48 51 54	30 30 30 30 30	15 15 15 15 15	45 45 45 45 45	S1 S1 S1 S1 S1	0.7731 0.8911 1.017 1.131 1.249	7.581 8.739 9.973 11.09 12.25	0.280.44 0.280.44 0.280.44 0.280.44 0.280.44	0.04 0.048 0.056 0.059 0.074	PS3-12 PS3-13 PS3-14 PS3-15 PS3-16
PS3-18 [ DXF| DWG| 3D CAD] PS3-20 [ DXF| DWG| 3D CAD] PS3-22 [ DXF| DWG| 3D CAD] PS3-24 [ DXF| DWG| 3D CAD] PS3-25 [ DXF| DWG| 3D CAD]	3 3 3 3 3	18 20 22 24 25	14 14 14 14 14	40 50 54 58 60	54 60 66 72 75	60 66 72 78 81	30 30 30 30 30	15 15 15 15 15	45 45 45 45 45	S1 S1 S1 S1 S1	1.459 1.689 1.909 2.131 2.251	14.31 16.56 18.72 20.9 22.07	0.30.46 0.30.46 0.30.46 0.30.46 0.30.46	0.1 0.12 0.15 0.18 0.19	PS3-18 PS3-20 PS3-22 PS3-24 PS3-25
PS3-26 [ DXF| DWG| 3D CAD] PS3-28 [ DXF| DWG| 3D CAD] PS3-30 [ DXF| DWG| 3D CAD]	3 3 3	26 28 30	14 14 14	65 70 75	78 84 90	84 90 96	30 30 30	15 15 15	45 45 45	S1 S1 S1	2.373 2.595 2.822	23.27 25.45 27.67	0.30.46 0.30.46 0.30.46	0.21 0.25 0.26	PS3-26 PS3-28 PS3-30

Catalog No.	Module	No. of teeth	Bore	Pitch dia.	Outside dia.	Face width	Total length	Shape	Allowable torque (kgfm)	Allowable torque (Nm)	Backlash (mm)	Weight (kgf)	Catalog No.
	m	z	AH8	C	D	E	G		Bending strength	Bending strength
PSA3-32 [ DXF| DWG| 3D CAD] PSA3-35 [ DXF| DWG| 3D CAD] PSA3-36 [ DXF| DWG| 3D CAD] PSA3-40 [ DXF| DWG| 3D CAD] PSA3-45 [ DXF| DWG| 3D CAD]	3 3 3 3 3	32 35 36 40 45	18 18 18 18 18	96 105 108 120 135	102 111 114 126 141	30 30 30 30 30	30 30 30 30 30	S5 S5 S5 S5 S5	3.065 3.444 3.574 4.08 4.719	30.06 33.77 35.05 40.01 46.28	0.30.46 0.320.48 0.320.48 0.320.48 0.320.48	0.23 0.29 0.31 0.38 0.49	PSA3-32 PSA3-35 PSA3-36 PSA3-40 PSA3-45
PSA3-48 [ DXF| DWG| 3D CAD] PSA3-50 [ DXF| DWG| 3D CAD] PSA3-55 [ DXF| DWG| 3D CAD] PSA3-60 [ DXF| DWG| 3D CAD]	3 3 3 3	48 50 55 60	18 18 18 18	144 150 165 180	150 156 171 186	30 30 30 30	30 30 30 30	S5 S5 S5 S5	5.117 5.387 6.007 6.642	50.18 52.83 58.91 65.14	0.320.48 0.320.48 0.320.48 0.320.48	0.55 0.53 0.73 0.88	PSA3-48 PSA3-50 PSA3-55 PSA3-60

CAUTION: Significant variations in temperature or humidity can cause dimensional changes in plastic gears (MC Nylon gears). Please see the section on plastic gears in the technical section for additional information.

NOTE: The allowable torques shown in the table are calculated using the Lewis formula. The backlash values shown 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.

 

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