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 S4

Module 2.5

Catalog No.	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Face width	Hub width	Total length	Web thickness	Web O.D.	Keyway	Shape	Allowable torque(kgfm)		Allowable torque(Nm)		Backlash (mm)	Weight(kgf)	Catalog No.
	z	AH7	B	C	D	E	F	G	H	I	JK		Bending strength	Surface durability	Bending strength	Surface durability
MSGA2.5-15 [ DXF| DWG| 3D CAD] MSGB2.5-15 [ DXF| DWG| 3D CAD]	15	15 18	30	37.5	42.5	25	12	37	-	-	52.3 62.8	S1	14.56	7.236	142.8	70.96	0.10.2	0.22 0.2	MSGA2.5-15 MSGB2.5-15
MSGA2.5-18 [ DXF| DWG| 3D CAD] MSGB2.5-18 [ DXF| DWG| 3D CAD]	18	18 20	38	45	50	25	12	37	-	-	62.8 62.8	S1	19.35	10.86	189.8	106.5	0.10.2	0.4 0.37	MSGA2.5-18 MSGB2.5-18
MSGA2.5-20 [ DXF| DWG| 3D CAD] MSGB2.5-20 [ DXF| DWG| 3D CAD]	20	18 22	40	50	55	25	12	37	-	-	62.8 62.8	S1	22.65	13.71	222.1	134.4	0.10.2	0.42 0.38	MSGA2.5-20 MSGB2.5-20
MSGA2.5-24 [ DXF| DWG| 3D CAD] MSGB2.5-24 [ DXF| DWG| 3D CAD]	24	18 22	40	60	65	25	12	37	-	-	62.8 62.8	S1	29.44	20.47	288.7	200.7	0.120.22	0.85 0.82	MSGA2.5-24 MSGB2.5-24
MSGA2.5-25 [ DXF| DWG| 3D CAD] MSGB2.5-25 [ DXF| DWG| 3D CAD]	25	20 25	45	62.5	67.5	25	12	37	-	-	62.8 83.3	S1	31.17	22.39	305.7	219.6	0.120.22	0.65 0.6	MSGA2.5-25 MSGB2.5-25
MSGA2.5-30 [ DXF| DWG| 3D CAD] MSGB2.5-30 [ DXF| DWG| 3D CAD]	30	22 28	50	75	80	25	12	37	-	-	62.8 83.3	S1	39.97	32.78	392	321.5	0.120.22	0.93 0.85	MSGA2.5-30 MSGB2.5-30
MSGA2.5-35 [ DXF| DWG| 3D CAD] MSGB2.5-35 [ DXF| DWG| 3D CAD]	35	25 30	55	87.5	92.5	25	12	37	-	-	83.3 83.3	S1	48.96	45.28	480.1	444	0.120.22	1.4 1.3	MSGA2.5-35 MSGB2.5-35
MSGA2.5-36 [ DXF| DWG| 3D CAD] MSGB2.5-36 [ DXF| DWG| 3D CAD]	36	25 30	55	90	95	25	12	37	-	-	83.3 83.3	S1	50.78	48.04	498	471.1	0.120.22	1.5 1.4	MSGA2.5-36 MSGB2.5-36
MSGA2.5-40 [ DXF| DWG| 3D CAD] MSGB2.5-40 [ DXF| DWG| 3D CAD]	40	25 32	55	100	105	25	12	37	-	-	83.3 103.3	S1	55.33	57.1	542.6	560	0.120.22	1.6 1.5	MSGA2.5-40 MSGB2.5-40
MSGA2.5-45 [ DXF| DWG| 3D CAD] MSGB2.5-45 [ DXF| DWG| 3D CAD]	45	30 35	60	112.5	117.5	25	12	37	-	-	83.3 103.3	S1	64.13	73.19	628.9	717.7	0.140.25	2.2 2.1	MSGA2.5-45 MSGB2.5-45
MSGA2.5-48 [ DXF| DWG| 3D CAD] MSGB2.5-48 [ DXF| DWG| 3D CAD]	48	30 35	60	120	125	25	12	37	-	-	83.3 103.3	S1	69.45	83.88	681.1	822.6	0.140.25	2.4 2.3	MSGA2.5-48 MSGB2.5-48
MSGA2.5-50 [ DXF| DWG| 3D CAD] MSGB2.5-50 [ DXF| DWG| 3D CAD]	50	30 35	60	125	130	25	12	37	17	105	83.3 103.3	S4	73.01	91.45	716	896.8	0.140.25	2.1 2	MSGA2.5-50 MSGB2.5-50
MSGA2.5-55 [ DXF| DWG| 3D CAD] MSGB2.5-55 [ DXF| DWG| 3D CAD]	55	30 40	70	137.5	142.5	25	12	37	17	115	83.3 123.3	S4	81.95	111.6	803.6	1094	0.140.25	3.2 3.1	MSGA2.5-55 MSGB2.5-55
MSGA2.5-60 [ DXF| DWG| 3D CAD] MSGB2.5-60 [ DXF| DWG| 3D CAD]	60	30 40	70	150	155	25	12	37	17	130	83.3 123.3	S4	90.94	133.7	891.8	1311	0.140.25	3 2.8	MSGA2.5-60 MSGB2.5-60
MSGA2.5-70 [ DXF| DWG| 3D CAD] MSGB2.5-70 [ DXF| DWG| 3D CAD]	70	40 50	85	175	180	25	12	37	17	150	123.3 143.8	S4	104.1	176.1	1021	1727	0.140.25	5.4 5.2	MSGA2.5-70 MSGB2.5-70

CAUTION:	No secondary operations can be performed on these gears due to the carburizing process.
NOTE:	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.

 

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