Specifications Precision grade JIS B 1704 grade 4 Core hardness HB115120 Gear teeth Gleason Surface hardness Pressure angle 20 Surface treatment - Material MC901 (Nylon) Surface finish Cut Heat treatment - Datum reference surface for gear cutting Bore

B3

20 Miter Module 14

Catalog No. 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 A B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability PM1-20 [ DXF| DWG | 3D CAD] PM1.25-20 [ DXF| DWG | 3D CAD] PM1.5-20 [ DXF| DWG | 3D CAD] PM2-20 [ DXF| DWG | 3D CAD] PM2.5-20 [ DXF| DWG | 3D CAD] 1 1.25 1.5 2 2.5 20 20 20 20 20 6 8 8 10 12 16 22 26 34 42 20 25 30 40 50 21.41 26.77 32.12 42.83 53.54 20 23 30 37 48 13.95 15.27 21.24 24.89 32.54 10.71 11.38 16.06 18.41 24.77 8 9 13 14 19 12 13 19 22 29 5 6 8 10 12 9.86 13.03 15.37 21.72 28.06 4948' 4948' 4948' 4948' 4948' B3 B3 B3 B3 B3 0.0183 0.0354 0.0626 0.1465 0.283 - - - - - 0.1795 0.3472 0.6139 1.437 2.775 - - - - - 0.080.18 0.090.19 0.10.2 0.110.21 0.120.22 0.01 0.01 0.01 0.02 0.04 PM1-20 PM1.25-20 PM1.5-20 PM2-20 PM2.5-20 PM3-20 [ DXF| DWG | 3D CAD] PM3.5-20 [ DXF| DWG | 3D CAD] PM4-20 [ DXF| DWG | 3D CAD] 3 3.5 4 20 20 20 14 20 20 50 60 64 60 70 80 64.24 74.95 85.66 58 65 75 39.84 44.13 50.78 30.12 32.47 37.83 23 25 27 35 40 45 15 18 20 31.57 39.09 43.43 4948' 4948' 4948' B3 B3 B3 0.4943 0.7899 1.172 - - - 4.847 7.746 11.49 - - - 0.130.23 0.150.25 0.170.27 0.07 0.12 0.16 PM3-20 PM3.5-20 PM4-20

Pitch Angle 45

25 Miter Module 13

Catalog No. 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 A B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability PM1-25 [ DXF| DWG| 3D CAD] PM1.25-25 [ DXF| DWG| 3D CAD] PM1.5-25 [ DXF| DWG | 3D CAD] PM2-25 [ DXF|DWG | 3D CAD] PM2.5-25 [ DXF| DWG | 3D CAD] PM3-25 [ DXF| DWG | 3D CAD] 1 1.25 1.5 2 2.5 3 25 25 25 25 25 25 6 8 8 10 14 15 20 25 30 40 50 60 25 31.25 37.5 50 62.5 75 26.41 33.02 39.62 52.83 66.04 79.24 23 28 34 40 50 60 15.16 17.88 22.25 24.33 30.41 37.81 11.21 13.26 16.31 16.41 20.52 24.62 8 9.25 11.5 10 12.5 15 14 16 19 20 26 32 6 7 9 12 15 20 15.03 18.7 19.54 26.06 34.57 37.43 4851' 4851' 4851' 4851' 4851' 4851' B3 B3 B3 B3 B3 B3 0.0301 0.0575 0.1015 0.2406 0.47 0.8315 - - - - - - 0.2952 0.5639 0.9954 2.359 4.609 8.154 - - - - - - 0.080.18 0.090.19 0.10.2 0.110.21 0.120.22 0.130.23 0.01 0.01 0.02 0.03 0.06 0.1 PM1-25 PM1.25-25 PM1.5-25 PM2-25 PM2.5-25 PM3-25

Pitch Angle 45

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:	Significant variations in temperature or humidity can cause dimensional changes in plastic gears (MC Nylon gears). Please see the section on plastic gears in the technical section for additional information.
NOTE:	The allowable torque show in the table are the calculated values using the Lewis formula.

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