Specifications Precision grade JIS B 1704 grade 2 Core hardness HB165194 Gear teeth Gleason Surface hardness HRC4853 Pressure angle 20 Surface treatment Black oxide except ground surfaces Helix angle 35 Surface finish Ground Material S45C (Carbon steel) Datum reference surface for gear grinding Bore Heat treatment Teeth induction hardened

B3

20 Miter Module 25

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 Shape Allowable torque (kgfm) Allowable torque (Nm) Backlash (mm) Weight (kgf) Catalog No. m z AH7 B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability SMSG2-20R [ DXF| DWG| 3D CAD] SMSG2-20L [ DXF| DWG| 3D CAD] R L 2 20 12 34 40 42.4 37 24.75 18.2 14 22 10 21.72 4912' B3 0.7981 0.6919 7.827 6.785 0.050.11 0.15 SMSG2-20R SMSG2-20L SMSG2.5-20R [ DXF| DWG| 3D CAD] SMSG2.5-20L [ DXF| DWG| 3D CAD] R L 2.5 20 14 42 50 52.94 48 32.42 24.47 19 29 12 28.06 4838' B3 1.522 1.346 14.93 13.2 0.060.12 0.3 SMSG2.5-20R SMSG2.5-20L SMSG3-20R [ DXF| DWG| 3D CAD] SMSG3-20L [ DXF| DWG| 3D CAD] R L 3 20 16 50 60 63.72 58 39.6 29.86 23 35 15 31.57 4938' B3 2.694 2.42 26.42 23.73 0.070.13 0.5 SMSG3-20R SMSG3-20L SMSG3.5-20R [ DXF| DWG| 3D CAD] SMSG3.5-20L [ DXF| DWG| 3D CAD] R L 3.5 20 20 60 70 74.47 65 43.81 32.23 25 40 18 39.09 5010' B3 4.346 3.96 42.62 38.83 0.080.14 0.8 SMSG3.5-20R SMSG3.5-20L SMSG4-20R [ DXF| DWG| 3D CAD] SMSG4-20L [ DXF| DWG| 3D CAD] R L 4 20 20 64 80 84.88 75 50.51 37.44 27 45 20 43.43 4920' B3 6.385 5.896 62.61 57.82 0.10.16 1.1 SMSG4-20R SMSG4-20L SMSG5-20R [ DXF| DWG| 3D CAD] SMSG5-20L [ DXF| DWG| 3D CAD] R L 5 20 25 80 100 105.9 90 60.16 42.95 30 54 26 54.46 4839' B3 11.77 11.11 115.4 109 0.10.16 2.1 SMSG5-20R SMSG5-20L

Pitch Angle 45

25 Miter Module 24

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 Shape Allowable torque (kgfm) Allowable torque (Nm) Backlash (mm) Weight (kgf) Catalog No. m z AH7 B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability SMSG2-25R [ DXF| DWG| 3D CAD] SMSG2-25L [ DXF| DWG| 3D CAD] R L 2 25 12 40 50 52.4 40 24.19 16.2 10 20 12 26.06 4822' B3 1.281 1.374 12.56 13.47 0.050.11 0.2 SMSG2-25R SMSG2-25L SMSG2.5-25R [ DXF| DWG| 3D CAD] SMSG2.5-25L [ DXF| DWG| 3D CAD] R L 2.5 25 16 50 62.5 65.54 50 30.24 20.27 12.5 26 15 34.57 4826' B3 2.501 2.737 24.53 26.84 0.060.12 0.4 SMSG2.5-25R SMSG2.5-25L SMSG3-25R [ DXF| DWG| 3D CAD] SMSG3-25L [ DXF| DWG| 3D CAD] R L 3 25 20 60 75 78.77 60 37.57 24.39 15 32 20 37.43 4851' B3 4.587 5.101 44.98 50.02 0.070.13 0.7 SMSG3-25R SMSG3-25L SMSG3.5-25R [ DXF| DWG| 3D CAD] SMSG3.5-25L [ DXF| DWG| 3D CAD] R L 3.5 25 25 70 87.5 91.81 70 42.98 28.41 17.5 37 22 46.77 4837' B3 7.051 7.967 69.15 78.13 0.080.14 1.1 SMSG3.5-25R SMSG3.5-25L SMSG4-25R [ DXF| DWG| 3D CAD] SMSG4-25L [ DXF| DWG| 3D CAD] R L 4 25 28 80 100 104.7 80 49.14 32.55 20 43 25 55.29 4752' B3 9.684 11.1 94.97 108.9 0.10.16 1.7 SMSG4-25R SMSG4-25L SMSG5-25R [ DXF| DWG| 3D CAD] SMSG5-25L [ DXF| DWG| 3D CAD] R L 5 25 28 100 125 130.86 100 60.59 40.43 25 50 30 65.15 4750' B3 18.47 21.72 181.1 213 0.120.18 3.4 SMSG5-25R SMSG5-25L

Pitch Angle 45

30 Miter Module 24

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 Shape Allowable torque (kgfm) Allowable torque (Nm) Backlash (mm) Weight (kgf) Catalog No. m z AH7 B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability SMSG2-30R [ DXF| DWG| 3D CAD] SMSG2-30L [ DXF| DWG| 3D CAD] R L 2 30 12 45 60 62.42 50 29.27 21.21 12.5 25 12 36.06 4753' B3 1.701 2.184 16.68 21.42 0.050.11 0.37 SMSG2-30R SMSG2-30L SMSG2.5-30R [ DXF| DWG| 3D CAD] SMSG2.5-30L [ DXF | DWG| 3D CAD] R L 2.5 30 16 60 75 78.04 62 36.08 26.02 17 32 15 47.57 4758' B3 3.323 4.356 32.59 42.72 0.060.12 0.77 SMSG2.5-30R SMSG2.5-30L SMSG3-30R [ DXF| DWG| 3D CAD] SMSG3-30L [ DXF| DWG| 3D CAD] R L 3 30 20 70 90 93.61 75 45.25 31.8 20 40 20 53.43 4748' B3 6.149 8.201 60.3 80.42 0.070.13 1.3 SMSG3-30R SMSG3-30L SMSG3.5-30R [ DXF| DWG| 3D CAD] SMSG3.5-30L [ DXF| DWG| 3D CAD] R L 3.5 30 25 90 105 109.21 85 49.4 34.6 25 45 22 67.77 4748' B3 8.68 11.77 85.12 115.4 0.080.14 2.3 SMSG3.5-30R SMSG3.5-30L SMSG4-30R [ DXF| DWG| 3D CAD] SMSG4-30L [ DXF| DWG| 3D CAD] R L 4 30 28 100 120 124.71 95 54.28 37.35 25 50 25 79.29 4726' B3 12.91 17.78 126.6 174.4 0.10.16 3.2 SMSG4-30R SMSG4-30L

Pitch Angle 45

CAUTION:	A set of miter gears must be identical in module and number of teeth, but opposite in spiral hands.
CAUTION:	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.
NOTE:	The allowable torques shown in the table are calculated according to JGMA Standards 403-01 and 404-01.

 

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