Specifications Precision grade JIS Grade N5 (JIS B 1702-1:1998) JIS Grade 1 (JIS B 1702:1976) Core hardness HB300320 Gear teeth Standard full depth Surface hardness HRC 5560 Pressure angle 20 Surface treatment - Material SCM415 Surface finish Ground Heat treatment Overall carburizing Datum reference surface for gear grinding Bore

S1

Module 1

Catalog No.	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Keyway	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
	z	AH7	B	C	D	E	F	G	JK		Bending strength	Surface durability	Bending strength	Surface durability
MSGA1-18 [ DXF| DWG| 3D CAD]	18	8	15	18	20	10	5	15	31.4	S1	1.238	0.65	12.14	6.374	0.080.16	0.02	MSGA1-18
MSGA1-20 [ DXF| DWG| 3D CAD] MSGB1-20 [ DXF| DWG| 3D CAD]	20	8 10	17	20	22	10	5	15	31.4 41.8	S1	1.45	0.8197	14.22	8.038	0.080.16	0.03 0.03	MSGA1-20 MSGB1-20
MSGA1-24 [ DXF| DWG| 3D CAD] MSGB1-24 [ DXF| DWG| 3D CAD]	24	10 12	20	24	26	10	5	15	41.8 41.8	S1	1.884	1.22	18.48	11.96	0.080.16	0.04 0.04	MSGA1-24 MSGB1-24
MSGA1-25 [ DXF| DWG| 3D CAD] MSGB1-25 [ DXF| DWG| 3D CAD]	25	10 12	20	25	27	10	5	15	41.8 4 1.8	S1	1.995	1.333	19.56	13.07	0.080.16	0.04 0.04	MSGA1-25 MSGB1-25
MSGA1-30 [ DXF| DWG| 3D CAD] MSGB1-30 [ DXF| DWG| 3D CAD]	30	10 12	25	30	32	10	5	15	41.8 41.8	S1	2.558	1.942	25.09	19.04	0.080.16	0.07 0.07	MSGA1-30 MSGB1-30
MSGA1-35 [ DXF| DWG| 3D CAD] MSGB1-35 [ DXF| DWG| 3D CAD]	35	10 15	25	35	37	10	5	15	41.8 52.3	S1	3.133	2.674	30.72	26.22	0.080.16	0.09 0.09	MSGA1-35 MSGB1-35
MSGA1-36 [ DXF| DWG| 3D CAD] MSGB1-36 [ DXF| DWG| 3D CAD]	36	12 15	25	36	38	10	5	15	41.8 52.3	S1	3.25	2.836	31.87	27.81	0.080.16	0.1 0.1	MSGA1-36 MSGB1-36
MSGA1-40 [ DXF| DWG| 3D CAD] MSGB1-40 [ DXF| DWG| 3D CAD]	40	12 15	30	40	42	10	5	15	41.8 52.3	S1	3.718	3.531	36.46	34.63	0.080.16	0.12 0.11	MSGA1-40 MSGB1-40
MSGA1-45 [ DXF| DWG| 3D CAD] MSGB1-45 [ DXF| DWG| 3D CAD]	45	12 15	30	45	47	10	5	15	41.8 52.3	S1	4.309	4.513	42.26	44.26	0.080.16	0.15 0.14	MSGA1-45 MSGB1-45
MSGA1-48 [ DXF| DWG| 3D CAD] MSGB1-48 [ DXF| DWG| 3D CAD]	48	12 15	30	48	50	10	5	15	41.8 52.3	S1	4.667	5.163	45.77	50.63	0.080.16	0.17 0.16	MSGA1-48 MSGB1-48
MSGA1-50 [ DXF| DWG| 3D CAD] MSGB1-50 [ DXF| DWG| 3D CAD]	50	12 15	35	50	52	10	5	15	41.8 52.3	S1	4.906	5.621	48.11	55.12	0.080.16	0.19 0.18	MSGA1-50 MSGB1-50
MSGA1-55 [ DXF| DWG| 3D CAD] MSGB1-55 [ DXF| DWG| 3D CAD]	55	15 20	40	55	57	10	10	20	52.3 62.8	S1	5.507	6.858	54	67.25	0.10.18	0.27 0.25	MSGA1-55 MSGB1-55
MSGA1-60 [ DXF| DWG| 3D CAD] MSGB1-60 [ DXF| DWG| 3D CAD]	60	15 20	40	60	62	10	10	20	52.3 62.8	S1	6.111	8.223	59.93	80.64	0.10.18	0.3 0.28	MSGA1-60 MSGB1-60
MSGA1-70 [ DXF| DWG| 3D CAD] MSGB1-70 [ DXF| DWG| 3D CAD]	70	20 25	45	70	72	10	10	20	62.8 83.3	S1	7.327	11.35	71.85	111.3	0.10.18	0.39 0.36	MSGA1-70 MSGB1-70
MSGA1-80 [ DXF| DWG| 3D CAD] MSGB1-80 [ DXF| DWG| 3D CAD]	80	20 25	45	80	82	10	10	20	62.8 83.3	S1	8.55	15.01	83.85	147.2	0.10.18	0.48 0.46	MSGA1-80 MSGB1-80
MSGA1-100 [ DXF| DWG| 3D CAD] MSGB1-100 [ DXF| DWG| 3D CAD]	100	20 25	45	100	102	10	10	20	62.8 83.3	S1	10.49	22.84	102.9	224	0.10.18	0.71 0.68	MSGA1-100 MSGB1-100

CAUTION:	No secondary operations can be performed on these gears due to the carburizing process
NOTE:	The allowable torques shown in the table are 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:	The backlash may be adjusted by changing the center distance of mating gears. For more information, please consult the technical section of our catalog.

 

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