Specifications Precision grade JIS B 1704 grade 4 Core hardness HRR115-120 Gear teeth Gleason Surface hardness Pressure angle 20 Surface treatment - Material MC901 (Nylon) Surface finish Hobbed Heat treatment - Datum reference surface for gear cutting Bore

B3 B4

Gear Ratio 1.5

Module 1.53

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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 AH8* B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability PB1.5-3020 [DXF| DWG| 3D CAD] PB1.5-2030 [DXF| DWG| 3D CAD] 1.5 30 20 10 8 30 25 45 30 46.24 33.13 28 33 18.53 18.63 13.93 11.54 8 8.83 16 17 9 27.37 17.05 5916' 3816' B4 B3 0.1363 0.0741 - 1.337 0.7267 - 0.10.2 18 9 PB1.5-3020 PB1.5-2030 PB2-3020 [DXF| DWG| 3D CAD] PB2-2030 [DXF| DWG| 3D CAD] 2 30 20 10 10 35 35 60 40 61.65 44.18 40 45 26.87 25.06 21.24 16.39 15 13.33 23 22 11 37.56 21.34 5916' 3816' B4 B3 0.3137 0.1706 - 3.076 1.673 - 0.110.21 39 23 PB2-3020 PB2-2030 PB2.5-3020 [DXF| DWG| 3D CAD] PB2.5-2030 [DXF| DWG| 3D CAD] 2.5 30 20 15 12 45 40 75 50 77.07 55.22 50 55 34.22 31.06 26.55 19.24 18 14.16 30 28 15 45.61 27.42 5916' 3816' B4 B3 0.6311 0.3432 - 6.189 3.366 - 0.120.22 82 40 PB2.5-3020 PB2.5-2030 PB3-3020 [DXF| DWG| 3D CAD] PB3-2030 [DXF| DWG| 3D CAD] 3 30 20 15 15 60 50 90 60 92.48 66.27 55 70 35.56 40.48 26.86 27.09 17 21.66 31 37 17 57.14 34.71 5916' 3816' B4 B3 1.07 0.582 - 10.49 5.707 - 0.130.23 140 81 PB3-3020 PB3-2030

Pitch Angle Pinion 5619' Pinion 3341'

Gear Ratio 2

Module 1.53

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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 (gf) Catalog No. m z AH8* B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability PB1-4020 [DXF| DWG| 3D CAD] PB1-2040 [DXF| DWG| 3D CAD] 1 40 20 8 6 25 16 40 20 40.59 22.41 22 28 15.07 13.78 12.59 8.6 8 7 12 12 6 26.58 9.17 6536' 3029' B4 B3 0.0654 0.0245 - 0.6413 0.2403 - 0.080.18 10 3 PB1-4020 PB1-2040 PB1.25-4020 [DXF| DWG| 3D CAD] PB1.25-2040 [DXF| DWG| 3D CAD] 1.25 40 20 10 8 32 22 50 25 50.73 28.01 27 36 18.54 18.66 15.23 11.75 10 10.25 16 17 8 33.61 13.22 6536' 3029' B4 B3 0.1315 0.0494 - 1.29 0.4844 - 0.090.19 20 7 PB1.25-4020 PB1.25-2040 PB1.5-4020 [DXF| DWG| 3D CAD] PB1.5-2040 [DXF| DWG| 3D CAD] 1.5 40 20 10 8 38 25 60 30 60.88 33.61 35 46 25.01 25.54 20.88 16.9 15 14.75 22 24 10 39.64 17.28 6536' 3029' B4 B3 0.2311 0.0867 - 2.266 0.8502 - 0.10.2 34 13 PB1.5-4020 PB1.5-2040 PB2-4020 [DXF| DWG| 3D CAD] PB2-2040 [DXF| DWG| 3D CAD] 2 40 20 12 12 40 32 80 40 81.17 44.81 45 60 32.37 34.16 26.17 21.2 18 18 27 32 15 48.46 20.92 6536' 3029' B4 B3 0.5707 0.2142 - 5.597 2.101 - 0.110.21 70 30 PB2-4020 PB2-2040 PB2.5-4020 [DXF| DWG| 3D CAD] PB2.5-2040 [DXF| DWG| 3D CAD] 2.5 40 20 15 12 50 40 100 50 101.47 56.01 55 75 39.73 43.78 31.47 26.5 20 22.5 35 41 20 60.28 24.56 6536' 3029' B4 B3 1.134 0.4255 - 11.12 4.173 - 0.120.22 160 60 PB2.5-4020 PB2.5-2040 PB3-4020 [DXF| DWG| 3D CAD] PB3-2040 [DXF| DWG| 3D CAD] 3 40 20 20 16 60 50 120 60 121.76 67.22 65 90 45.85 50.81 36.76 31.8 24 27.5 38 47 22 73.81 29.61 6536' 3029' B4 B3 1.913 0.7181 - 18.76 7.042 - 0.130.23 240 100 PB3-4020 PB3-2040

Pitch Angle Pinion 6326' Pinion 2634'

Gear Ratio 3

Module 1.53

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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 (gf) Catalog No. m z AH8* B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability PB1.5-4515 [DXF| DWG| 3D CAD] PB1.5-1545 [DXF| DWG| 3D CAD] 1.5 45 15 10 8 40 18 67.5 22.5 68.06 26.51 28 47 20.44 23.19 17.59 13.92 11 12.5 17 22.5 10 46.58 14.75 7327' 2217' B4 B3 0.279 0.0599 - 2.736 0.5874 - 0.10.2 40 6 PB1.5-4515 PB1.5-1545 PB2-4515 [DXF| DWG| 3D CAD] PB2-1545 [DXF| DWG| 3D CAD] 2 45 15 12 10 60 24 90 30 90.75 35.35 40 60 30.4 29.8 26.12 15.89 17 14 26 29 15 59.04 19.13 7327' 2217' B4 B3 0.6932 0.1489 - 6.798 1.46 - 0.110.21 120 13 PB2-4515 PB2-1545 PB2.5-4515 [DXF| DWG| 3D CAD] PB2.5-1545 [DXF| DWG| 3D CAD] 2.5 45 15 15 12 60 30 112.5 37.5 113.43 44.18 50 75 38.35 38.41 32.65 19.86 22 17.5 35 37 20 72.84 20.51 7327' 2217' B4 B3 1.382 0.2968 - 13.55 2.911 - 0.120.22 200 27 PB2.5-4515 PB2.5-1545 PB3-4515 [DXF| DWG| 3D CAD] PB3-1545 [DXF| DWG| 3D CAD] 3 45 15 20 15 80 38 135 45 136.12 53.02 55 90 40.74 45.17 34.18 23.84 20 21.33 35 43 23 88.18 22.54 7327' 2217' B4 B3 2.357 0.5062 - 23.11 4.964 - 0.130.23 350 50 PB3-4515 PB3-1545

Pitch Angle Pinion 7134' Pinion 1826'

NOTE:	The tolerance H8 is at the time of production.
CAUTION:	Significant variations in temperature or humidity can cause changes in plastic gears (MC Nylon). Please see the section on plastic gears in the technical section.
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 from the Lewis formula.
USEFUL HINT:	For plastic materials, it is difficult to determine the operating temperature below which there is no harmful effects from long term, continuous operation. In general, it is set to 20 to 30 C below the thermal deflection point. It is also set by actual usage experience. There is not much data on low temperature limits. Users should rely on their own experience taking the brittleness properties into consideration. Please see "Characteristics of Plastic Gears" on p.101 for additional data.
Reference:	"Manual of Material Selection", Nippon Polypenco Co., Ltd.

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