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 stell)	Datum reference surface for gear cutting	Bore
Heat treatment	Overall carburizing

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

Gear Ratio 1.5

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.
MBSA1-3020R [ DXF\| DWG \| 3D CAD] MBSA1-2030L [ DXF\| DWG \| 3D CAD] MBSB1-2030L [ DXF\| DWG \| 3D CAD]	R	1	30	10	22	30	30.51	22	15.23	12.38	9	14	5.5	19.45	5855'	-	4.5	M4	B4	0.4384	0.471	4.299	4.619	0.030.13	0.04	MBSA1-3020R MBSA1-2030L MBSB1-2030L
	L	1	20	8 10	17	20	21.5	25	14.87	10.5	9	14	5.5	12.17	3734'	- -	4.5	M4 M4	B3	0.299	0.314	2.932	3.079	0.030.13	0.02 0.02	MBSA1-3020R MBSA1-2030L MBSB1-2030L
MBSA1.5-3020R [ DXF\| DWG \| 3D CAD] MBSB1.5-3020R [ DXF\| DWG \| 3D CAD] MBSA1.5-2030L [ DXF\| DWG \| 3D CAD] MBSB1.5-2030L [ DXF\| DWG \| 3D CAD]	R	1.5	30	15 18	32	45	46	30	20.22	15.75	11	18	8.5	28.57	5822'	52.3 62.8	5.5	M5 M6	B4	1.508	1.653	14.79	16.21	0.050.15	0.12 0.11	MBSA1.5-3020R MBSB1.5-3020R MBSA1.5-2030L MBSB1.5-2030L
	L	1.5	20	12 14	26	30	32.6	35	20.16	13.37	11.17	19	8.5	18.85	3704'	41.8 52.3	5.5	M5 M5	B3	1.028	1.102	10.08	10.81	0.050.15	0.07 0.06	MBSA1.5-3020R MBSB1.5-3020R MBSA1.5-2030L MBSB1.5-2030L
MBSA2-3020R [ DXF\| DWG \| 3D CAD] MBSB2-3020R [ DXF\| DWG \| 3D CAD] MBSA2-2030L [ DXF\| DWG \| 3D CAD] MBSB2-2030L [ DXF\| DWG \| 3D CAD]	R	2	30	20 22	40	60	61.34	40	26.8	21.02	14	23	11	37.56	5820'	62.8 62.8	7	M6 M6	B4	3.507	3.914	34.39	38.38	0.060.16	0.27 0.26	MBSA2-3020R MBSB2-3020R MBSA2-2030L MBSB2-2030L
	L	2	20	15 18	35	40	43.49	45	24.96	16.16	13.33	23	11	24.34	3705'	52.3 62.8	6.5	M5 M6	B3	2.392	2.609	23.46	25.59	0.060.16	0.15 0.13	MBSA2-3020R MBSB2-3020R MBSA2-2030L MBSB2-2030L
MBSA2.5-3020R [ DXF\| DWG \| 3D CAD] MBSB2.5-3020R [ DXF\| DWG \| 3D CAD] MBSA2.5-2030L [ DXF\| DWG \| 3D CAD] MBSB2.5-2030L [ DXF\| DWG \| 3D CAD]	R	2.5	30	22 25	48	75	76.74	50	33.6	26.31	18	30	14	48.01	5839'	62.8 83.3	9	M6 M8	B4	6.929	7.835	67.95	76.83	0.070.17	0.55 0.52	MBSA2.5-3020R MBSB2.5-3020R MBSA2.5-2030L MBSB2.5-2030L
	L	2.5	20	18 20	43	50	54.43	55	30.08	18.98	15.17	28	14	31.02	3740'	62.8 62.8	7.5	M6 M6	B3	4.726	5.224	46.35	51.23	0.070.17	0.27 0.26	MBSA2.5-3020R MBSB2.5-3020R MBSA2.5-2030L MBSB2.5-2030L
MBSA3-3020R [ DXF\| DWG \| 3D CAD] MBSB3-3020R [ DXF\| DWG \| 3D CAD] MBSA3-2030L [ DXF\| DWG \| 3D CAD] MBSB3-2030L [ DXF\| DWG \| 3D CAD]	R	3	30	25 30	60	90	92.21	60	40.34	31.66	21	36	17	57.14	5920'	83.3 83.3	11	M8 M8	B4	12.06	13.78	118.3	135.1	0.080.18	1.1 1	MBSA3-3020R MBSB3-3020R MBSA3-2030L MBSB3-2030L
	L	3	20	22 25	53	60	65.58	65	35.17	21.86	17.67	32.5	17	36.2	3845'	62.8 83.3	9	M6 M8	B3	8.227	9.186	80.68	90.08	0.080.18	0.49 0.46	MBSA3-3020R MBSB3-3020R MBSA3-2030L MBSB3-2030L
MBSA4-3020R [ DXF\| DWG \| 3D CAD] MBSB4-3020R [ DXF\| DWG \| 3D CAD] MBSA4-2030L [ DXF\| DWG \| 3D CAD] MBSB4-2030L [ DXF\| DWG \| 3D CAD]	R	4	30	35 40	75	120	122.91	70	43.99	32.18	21	39	23	76.72	5908'	103.3 123.3	10	M8 M8	B4	28.85	33.45	282.9	328	0.120.27	2 1.9	MBSA4-3020R MBSB4-3020R MBSA4-2030L MBSB4-2030L
	L	4	20	30 35	70	80	87.34	85	45.53	27.45	21.67	42	23	48.07	3825'	83.3 103.3	11	M8 M8	B3	19.68	22.3	193	218.7	0.120.27	1.1 1	MBSA4-3020R MBSB4-3020R MBSA4-2030L MBSB4-2030L
MBSA5-3020R [ DXF\| DWG \| 3D CAD] MBSA5-2030L [ DXF\| DWG \| 3D CAD] MBSB5-2030L [ DXF\| DWG \| 3D CAD]	R	5	30	80	-	150	-	70	35.53	23.8	-	31	28	97.36	5910'	-	110	6-M10	B7	55.43	64.94	543.6	636.8	0.140.34	3	MBSA5-3020R MBSA5-2030L MBSB5-2030L
	L	5	20	35 40	87	100	109.2	105	55.05	33.07	25.67	51	28	62.04	3831'	103.3 123.3	13	M8 M8	B3	37.81	43.3	370.8	424.6	0.140.34	2.1 2	MBSA5-3020R MBSA5-2030L MBSB5-2030L
MBSA6-3020R [ DXF\| DWG \| 3D CAD] MBSA6-2030L [ DXF\| DWG \| 3D CAD] MBSB6-2030L [ DXF\| DWG \| 3D CAD]	R	6	30	90	-	180	-	80	38.86	24.37	-	33	34	115.61	5828'	-	120	6-M10	B7	94.57	114	927.4	1118	0.160.36	4.8	MBSA6-3020R MBSA6-2030L MBSB6-2030L
	L	6	20	45 50	105	120	130.48	125	65.57	38.49	30	60	34	72.41	3722'	143.8 143.8	15	M8 M8	B3	64.5	75.97	632.5	745	0.160.36	3.4 3.2	MBSA6-3020R MBSA6-2030L MBSB6-2030L

Pitch Angle Gear 56

19' Pinion 33

41'

*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:*	This products are supplied with set screw.
*NOTE:*	The allowable forces shown in the table are for racks mating with 30 teeth pinions calculated according to JGMA Standards 401-01 and 402-01.
*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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