Metric Spiral Bevel Gears Module 1~6

Quality Transmission is the largest North American supplier of off-the-shelf metric gearing.

Specifications
Precision grade	JIS B 1704 grade 4	Core hardness	HB300320
Gear teeth	Gleason	Surface hardness	HRC5560
Pressure angle	20	Surface treatment	-
Helix angle	35	Surface finish	Cut
Material	SCM415 (Alloy steel)	Datum reference surface for gear cutting	Bore
Heat treatment	Overall carburizing

Back surface of B7 type is machinable due to masking during carburization.

B3

B4

B7

Gear Ratio 2

Module 16

Catalog No.	Hand of thread	Module	No. of teeth	Bore	Hub dia.	Pitch dia.	Outside dia.	Mounting distance	Total length	Crown to back length	Hub width	Length of bore	Face width	Holding surface dia.	Face angle	Keyway	Threaded hole		Shape	Allowable torque (kgfm)		Allowable torque (Nm)		Backlash (mm)	Weight (kgf)	Catalog No.
Catalog No.	Hand of thread	m	z	A_H7	B	C	D	E	F	G	H	I	J	K	L	WidthDepth	M	Thread size	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
MBSA1-4020R [ DXF\| DWG \| 3D CAD] MBSB1-4020R [ DXF\| DWG \| 3D CAD] MBSA1-2040L [ DXF\| DWG \| 3D CAD] MBSB1-2040L [ DXF\| DWG \| 3D CAD]	R	1	40	12 15	28	40	40.5	23	15.97	13.5	9	14	6	27.58	6534'	41.8 52.3	5	M5 M5	B4	0.6865	0.7709	6.732	7.56	0.030.13	0.08 0.07	MBSA1-4020R MBSB1-4020R MBSA1-2040L MBSB1-2040L
	L	1	20	8 10	17	20	22.08	30	15.71	10.52	9.25	15	6	13.17	3014'	- -	5	M4 M4	B3	0.3439	0.3854	3.372	3.779	0.030.13	0.02 0.02	MBSA1-4020R MBSB1-4020R MBSA1-2040L MBSB1-2040L
MBSA1.5-4020R [ DXF\| DWG \| 3D CAD] MBSB1.5-4020R [ DXF\| DWG \| 3D CAD] MBSA1.5-2040L [ DXF\| DWG \| 3D CAD] MBSB1.5-2040L [ DXF\| DWG \| 3D CAD]	R	1.5	40	15 20	35	60	60.73	35	24.93	20.73	15	23	10	40.64	6509'	52.3 62.8	8	M5 M6	B4	2.487	2.851	24.39	27.96	0.050.15	0.25 0.22	MBSA1.5-4020R MBSB1.5-4020R MBSA1.5-2040L MBSB1.5-2040L
	L	1.5	20	12 14	26	30	33.06	43	22.46	13.77	12	21.5	10	19.28	2949'	41.8 52.3	6	M5 M5	B3	1.246	1.426	12.22	13.98	0.050.15	0.07 0.07	MBSA1.5-4020R MBSB1.5-4020R MBSA1.5-2040L MBSB1.5-2040L
MBSA2-4020R [ DXF\| DWG \| 3D CAD] MBSB2-4020R [ DXF\| DWG \| 3D CAD] MBSA2-2040L [ DXF\| DWG \| 3D CAD] MBSB2-2040L [ DXF\| DWG \| 3D CAD]	R	2	40	20 22	45	80	81.02	45	31.83	26.06	18	29	14	52.7	6540'	62.8 62.8	9	M6 M6	B4	6.081	7.094	59.63	69.57	0.060.16	0.55 0.53	MBSA2-4020R MBSB2-4020R MBSA2-2040L MBSB2-2040L
	L	2	20	15 18	35	40	44.2	55	28.16	16.05	13.75	27	14	25.39	3020'	52.3 62.8	7	M5 M6	B3	3.046	3.547	29.87	34.78	0.060.16	0.17 0.16	MBSA2-4020R MBSB2-4020R MBSA2-2040L MBSB2-2040L
MBSA2.5-4020R [ DXF\| DWG \| 3D CAD] MBSB2.5-4020R [ DXF\| DWG \| 3D CAD] MBSA2.5-2040L [ DXF\| DWG \| 3D CAD] MBSB2.5-2040L [ DXF\| DWG \| 3D CAD]	R	2.5	40	25 28	55	100	101.29	50	33.35	26.29	16	30	17	66.99	6528'	83.3 83.3	8	M8 M8	B4	11.66	13.78	114.3	135.1	0.070.17	0.96 0.93	MBSA2.5-4020R MBSB2.5-4020R MBSA2.5-2040L MBSB2.5-2040L
	L	2.5	20	20 22	43	50	55.12	65	31.01	16.28	13.25	29	17	29.97	3007'	62.8 62.8	7	M6 M6	B3	5.841	6.889	57.28	67.56	0.070.17	0.27 0.25	MBSA2.5-4020R MBSB2.5-4020R MBSA2.5-2040L MBSB2.5-2040L
MBSA3-4020R [ DXF\| DWG \| 3D CAD] MBSB3-4020R [ DXF\| DWG \| 3D CAD] MBSA3-2040L [ DXF\| DWG \| 3D CAD] MBSB3-2040L [ DXF\| DWG \| 3D CAD]	R	3	40	30 35	65	120	121.57	60	39.81	31.57	21	35	20	80.28	6542'	83.3 103.3	11	M8 M8	B4	19.89	23.74	195.1	232.8	0.080.18	1.52 1.45	MBSA3-4020R MBSB3-4020R MBSA3-2040L MBSB3-2040L
	L	3	20	22 25	53	60	66.03	80	38.9	21.51	18.25	36.5	20	36.56	2944'	62.8 83.3	9.5	M6 M8	B3	9.965	11.87	97.72	116.4	0.080.18	0.55 0.51	MBSA3-4020R MBSB3-4020R MBSA3-2040L MBSB3-2040L
MBSA4-4020R [ DXF\| DWG \| 3D CAD] MBSA4-2040L [ DXF\| DWG \| 3D CAD] MBSB4-2040L [ DXF\| DWG \| 3D CAD]	R	4	40	80	-	160	-	60	32.08	22.53	-	28	27	107.63	6529'	-	110	6-M10	B7	47.53	57.5	466.1	563.9	0.120.27	3.2	MBSA4-4020R MBSA4-2040L MBSB4-2040L
	L	4	20	30 35	70	80	88.46	100	45.38	22.12	17.5	43	27	51.25	3045'	83.3 103.3	9	M8 M8	B3	23.81	28.75	233.5	281.9	0.120.27	1.1 1	MBSA4-4020R MBSA4-2040L MBSB4-2040L
MBSA5-4020R [ DXF\| DWG \| 3D CAD] MBSA5-2040L [ DXF\| DWG \| 3D CAD] MBSB5-2040L [ DXF\| DWG \| 3D CAD]	R	5	40	90	-	200	-	70	35.2	22.98	-	30	34	133.97	6452'	-	120	6-M10	B7	93.28	113.9	914.8	1117	0.140.34	5.7	MBSA5-4020R MBSA5-2040L MBSB5-2040L
	L	5	20	40 45	87	100	109.91	125	57.11	27.48	21.75	53.5	34	61.95	2930'	123.3 143.8	11	M8 M8	B3	46.73	56.97	458.3	558.7	0.140.34	2.1 2	MBSA5-4020R MBSA5-2040L MBSB5-2040L
MBSA6-4020R [ DXF\| DWG \| 3D CAD] MBSA6-2040L [ DXF\| DWG \| 3D CAD] MBSB6-2040L [ DXF\| DWG \| 3D CAD]	R	6	40	110	-	240	-	80	37.89	23.62	-	32	40	162.56	6458'	-	140	6-M10	B7	156	195.9	1530	1921	0.160.36	8.6	MBSA6-4020R MBSA6-2040L MBSB6-2040L
	L	6	20	50 55	105	120	132.04	150	67.8	33.01	26.25	64	40	77.11	2944'	143.8 164.3	14	M8 M10	B3	78.13	97.94	766.2	960.5	0.160.36	3.5 3.3	MBSA6-4020R MBSA6-2040L MBSB6-2040L

Pitch Angle Gear 63

26' Pinion 26

34'

*CAUTION:*	With the exception of B7 type gears, dimensions of the outside diameter, the overall length and crown to back length are all theoretical values, and some differences will occur due to the corner chamfering of the gear tips.
*CAUTION:*	The products which are hardened by carburizing allow no secondary machining, however, the back surface of B7 type gears are masked during the process so that it is possible to drill and pin on this surface.
*NOTE:*	The allowable torques shown in the table are calculated according to JGMA Standards 403-01 and 404-01.
*NOTE:*	This products are supplied with set screw.
*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.

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