Metric Gears, SSG Ground Spur Gears Module 1

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

Specifications
Precision grade	JIS Grade N7 (JIS B 1702-1:1998) JIS Grade 3 (JIS B 1702:1976)	Core hardness	HB165194
Gear teeth	Standard full depth	Surface hardness	HRC 4853
Pressure angle	20	Surface treatment	Black oxide except ground surfaces
Material	S45C	Surface finish	Ground
Heat treatment	Tooth surfaces induction hardened	Datum reference surface for gear grinding	Bore

Module 1

Catalog No.	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.
Catalog No.	z	A_H7	B	C	D	E	F	G	Shape	Bending strength	Surface durability	Bending strength	Surface durability	Backlash (mm)	Weight (kgf)	Catalog No.
SSG1-15 [ DXF\| DWG\| 3D CAD] SSG1-16 [ DXF\| DWG\| 3D CAD] SSG1-17 [ DXF\| DWG\| 3D CAD] SSG1-18 [ DXF\| DWG\| 3D CAD] SSG1-19 [ DXF\| DWG\| 3D CAD]	15 16 17 18 19	6 6 6 6 6	12 13 14 15 16	15 16 17 18 19	17 18 19 20 21	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	0.3331 0.3691 0.4056 0.4427 0.4802	0.1053 0.1213 0.1386 0.157 0.1767	3.267 3.62 3.978 4.341 4.709	1.033 1.19 1.359 1.54 1.733	0.080.16 0.080.16 0.080.16 0.080.16 0.080.16	0.02 0.02 0.02 0.03 0.03	SSG1-15 SSG1-16 SSG1-17 SSG1-18 SSG1-19
SSG1-20 [ DXF\| DWG\| 3D CAD] SSG1-21 [ DXF\| DWG\| 3D CAD] SSG1-22 [ DXF\| DWG\| 3D CAD] SSG1-23 [ DXF\| DWG\| 3D CAD] SSG1-24 [ DXF\| DWG\| 3D CAD]	20 21 22 23 24	6 8 8 8 8	17 18 18 20 20	20 21 22 23 24	22 23 24 25 26	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	0.5181 0.5565 0.5952 0.6342 0.6735	0.1976 0.2186 0.2407 0.2639 0.2881	5.081 5.457 5.837 6.219 6.605	1.938 2.144 2.36 2.588 2.825	0.080.16 0.080.16 0.080.16 0.080.16 0.080.16	0.03 0.04 0.04 0.04 0.05	SSG1-20 SSG1-21 SSG1-22 SSG1-23 SSG1-24
SSG1-25 [ DXF\| DWG\| 3D CAD] SSG1-26 [ DXF\| DWG\| 3D CAD] SSG1-27 [ DXF\| DWG\| 3D CAD] SSG1-28 [ DXF\| DWG\| 3D CAD] SSG1-29 [ DXF\| DWG\| 3D CAD]	25 26 27 28 29	8 8 8 8 8	20 20 20 20 25	25 26 27 28 29	27 28 29 30 31	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	0.713 0.7529 0.7929 0.8332 0.8737	0.3135 0.34 0.3675 0.3962 0.4259	6.992 7.383 7.776 8.171 8.568	3.074 3.334 3.604 3.885 4.177	0.080.16 0.080.16 0.080.16 0.080.16 0.080.16	0.05 0.05 0.05 0.06 0.07	SSG1-25 SSG1-26 SSG1-27 SSG1-28 SSG1-29
SSG1-30 [ DXF\| DWG\| 3D CAD] SSG1-32 [ DXF\| DWG\| 3D CAD] SSG1-34 [ DXF\| DWG\| 3D CAD] SSG1-35 [ DXF\| DWG\| 3D CAD] SSG1-36 [ DXF\| DWG\| 3D CAD]	30 32 34 35 36	10 10 10 10 10	25 25 25 25 25	30 32 34 35 36	32 34 36 37 38	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	0.9143 0.8301 0.8988 0.9334 0.968	0.4568 0.4349 0.4934 0.5241 0.5557	8.966 8.14 8.814 9.153 9.493	4.48 4.265 4.839 5.14 5.449	0.080.16 0.080.16 0.080.16 0.080.16 0.080.16	0.07 0.08 0.08 0.09 0.09	SSG1-30 SSG1-32 SSG1-34 SSG1-35 SSG1-36
SSG1-38 [ DXF\| DWG\| 3D CAD] SSG1-40 [ DXF\| DWG\| 3D CAD] SSG1-42 [ DXF\| DWG\| 3D CAD] SSG1-44 [ DXF\| DWG\| 3D CAD] SSG1-45 [ DXF\| DWG\| 3D CAD]	38 40 42 44 45	10 10 10 10 10	30 30 30 30 30	38 40 42 44 45	40 42 44 46 47	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	1.038 1.108 1.178 1.248 1.284	0.6219 0.692 0.7661 0.844 0.8844	10.18 10.87 11.55 12.24 12.59	6.099 6.786 7.513 8.277 8.673	0.080.16 0.080.16 0.080.16 0.080.16 0.080.16	0.12 0.12 0.13 0.14 0.15	SSG1-38 SSG1-40 SSG1-42 SSG1-44 SSG1-45
SSG1-48 [ DXF\| DWG\| 3D CAD] SSG1-50 [ DXF\| DWG\| 3D CAD] SSG1-55 [ DXF\| DWG\| 3D CAD] SSG1-56 [ DXF\| DWG\| 3D CAD] SSG1-60 [ DXF\| DWG\| 3D CAD]	48 50 55 56 60	10 12 12 12 12	30 35 35 35 40	48 50 55 56 60	50 52 57 58 62	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	1.39 1.461 1.64 1.676 1.82	1.012 1.102 1.344 1.395 1.611	13.63 14.33 16.08 16.44 17.85	9.924 10.81 13.18 13.68 15.8	0.080.16 0.080.16 0.10.18 0.10.18 0.10.18	0.16 0.18 0.21 0.22 0.26	SSG1-48 SSG1-50 SSG1-55 SSG1-56 SSG1-60
SSG1-64 [ DXF\| DWG\| 3D CAD] SSG1-70 [ DXF\| DWG\| 3D CAD] SSG1-75 [ DXF\| DWG\| 3D CAD] SSG1-80 [ DXF\| DWG\| 3D CAD] SSG1-90 [ DXF\| DWG\| 3D CAD]	64 70 75 80 90	12 12 12 15 15	40 40 40 50 50	64 70 75 80 90	66 72 77 82 92	8 8 8 8 8	10 10 10 10 10	18 18 18 18 18	S1 S1 S1 S1 S1	1.965 2.182 2.364 2.547 2.913	1.844 2.224 2.569 2.941 3.766	19.27 21.4 23.18 24.98 28.57	18.08 21.81 25.19 28.84 36.93	0.10.18 0.10.18 0.10.18 0.10.18 0.10.18	0.29 0.32 0.36 0.45 0.53	SSG1-64 SSG1-70 SSG1-75 SSG1-80 SSG1-90
SSG1-100 [ DXF\| DWG\| 3D CAD] SSG1-120 [ DXF\| DWG\| 3D CAD]	100 120	15 15	50 50	100 120	102 122	8 8	10 10	18 18	S1 S1	3.028 3.709	4.338 6.373	29.69 36.37	42.54 62.5	0.10.18 0.120.2	0.63 0.84	SSG1-100 SSG1-120

CAUTION: Secondary operations may be performed on these gears except for modifications near or on the gear teeth.

NOTE: The 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.

USEFUL HINT: There are three methods for lubricating gears in general machinery use:
                             1. Grease
                             2. Splash lubrication
                             3. Forced oil circulation.

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