Specifications Precision grade JIS B 1704 grade 3 Core hardness Less than HB194 Gear teeth Gleason Surface hardness Pressure angle 20 Surface treatment Black oxide Material S45C (Carbon steel) Surface finish Hobbed Heat treatment - Datum reference surface for gear cutting Bore

B3 B4 B5 B6

Gear Ratio 2

Module 18

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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 AH7 B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability SB1-4020 [DXF | DWG | 3D CAD] SB1-2040 [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 0.2665 0.1342 0.0299 0.015 2.613 1.316 0.2932 0.1471 0.030.13 0.07 0.02 SB1-4020 SB1-2040 SB1.25-4020 [DXF | DWG | 3D CAD] SB1.25-2040 [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 0.5439 0.2739 0.0626 0.0313 5.334 2.686 0.6139 0.3069 0.040.14 0.14 0.05 SB1.25-4020 SB1.25-2040 SB1.5-4020 [DXF | DWG | 3D CAD] SB1.5-2040 [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 0.9654 0.4862 0.1134 0.0567 9.467 4.768 1.112 0.556 0.050.15 0.23 0.09 SB1.5-4020 SB1.5-2040 SB2-4020 [DXF | DWG | 3D CAD] SB2-2040 [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 2.463 1.24 0.2977 0.1488 24.15 12.16 2.919 1.459 0.060.16 0.5 0.2 SB2-4020 SB2-2040 SB2.5-4020 [DXF | DWG | 3D CAD] SB2.5-2040 [DXF | DWG | 3D CAD] 2.5 40 20 15 12 50 40 100 50 101.46 56.01 55 75 39.73 43.78 31.46 26.5 20 22.5 35 41 20 60.28 24.56 6536' 3029' B4 B3 4.994 2.515 0.6162 0.3081 48.97 24.66 6.043 3.021 0.070.17 1.1 0.4 SB2.5-4020 SB2.5-2040 SB3-4020 [DXF | DWG | 3D CAD] SB3-2040 [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 8.2 4.13 1.032 0.5161 80.41 40.5 10.12 5.061 0.080.18 1.6 0.7 SB3-4020 SB3-2040 SB4-4020 [DXF | DWG | 3D CAD] SB4-2040 [DXF | DWG | 3D CAD] 4 40 20 20 20 70 60 160 80 162.34 89.62 80 120 53.92 66.59 42.34 42.41 28 35 45 62 28 102.39 42.78 6536' 3029' B4 B3 18.89 9.511 2.456 1.228 185.2 93.27 24.08 12.04 0.120.27 3.3 1.5 SB4-4020 SB4-2040 SB5-4020 [DXF | DWG | 3D CAD] SB5-2040 [DXF | DWG | 3D CAD] 5 40 20 25 20 100 80 200 100 202.93 112.03 90 140 55.33 68.92 42.93 43.01 26 35 50 63 30 138.92 57.84 6536' 3029' B5 B3 33.32 16.78 4.472 2.236 326.8 164.6 43.85 21.93 0.140.34 6 2.9 SB5-4020 SB5-2040 SB6-4020 [DXF | DWG | 3D CAD] CB6-4020 [DXF | DWG | 3D CAD] SB6-2040 [DXF | DWG | 3D CAD] 6 40 40 20 25 25 25 85 80 90 240 240 120 243.52 243.52 134.44 105 105 160 65.05 65 78.16 48.52 48.5 43.6 28 20 32.5 58 58 70 40 158.56 158.61 61.11 6536' 6536' 3029' B5 B6 B3 61.17 12.29 30.8 8.483 5.016 4.242 599.9 120.5 302 83.19 49.19 41.6 0.160.36 7.9 6 4.1 SB6-4020 CB6-4020 SB6-2040 CB8-4020 [DXF | DWG | 3D CAD] SB8-2040 [DXF | DWG | 3D CAD] 8 40 20 35 30 110 120 320 160 324.69 179.25 130 210 79.5 106.64 54.69 54.81 20 40 70 95 60 200.83 71.67 6536' 3029' B6 B3 31.04 77.79 13.23 15.39 304.4 762.9 129.7 150.9 0.20.3 14 9 CB8-4020 SB8-2040 SBY8-4020 [DXF | DWG | 3D CAD] SBY8-2040 [DXF | DWG | 3D CAD] 8 40 20 35 30 180 120 320 160 324.69 179.25 130 210 75.36 98 54.69 54.81 25 40 61 90 50 219.2 96.39 6536' 3029' B4 B3 137.5 69.3 20 10.01 1349 679 196.3 98.1 0.20.45 25 9.4 SBY8-4020 SBY8-2040

Pitch Angle Gear 6326' Pinion 2634'

Gear Ratio 2.5

Module 15

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Click on the DXF, DWG or 3D CAD Button to View/Download our CAD drawings

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 AH7 B C D E F G H I J K L Bending strength Surface durability Bending strength Surface durability SB1-4518 [DXF | DWG | 3D CAD] SB1-1845 [DXF | DWG | 3D CAD] 1 45 18 8 6 30 15 45 18 45.46 20.57 23 32 16.95 16.34 14.57 10.02 10 8.9 15 15.5 7 30.73 10.31 7006' 2531' B4 B3 0.3419 0.136 0.036 0.0144 3.353 1.334 0.353 0.1412 0.030.13 0.11 0.02 SB1-4518 SB1-1845 SB1.25-4518 [DXF | DWG | 3D CAD] SB1.25-1845 [DXF | DWG | 3D CAD] 1.25 45 18 10 8 34 19 56.25 22.5 56.82 25.72 26 40 18.53 20.66 15.46 12.52 10 11.17 16 19.5 9 37.86 12.16 7006' 2531' B4 B3 0.6802 0.2706 0.0734 0.0294 6.67 2.654 0.7198 0.2883 0.040.14 0.17 0.04 SB1.25-4518 SB1.25-1845 SB1.5-4518 [DXF | DWG | 3D CAD] SB1.5-1845 [DXF | DWG | 3D CAD] 1.5 45 18 10 8 36 23 67.5 27 68.18 30.86 30 45 21.1 21.97 17.35 12.02 10 10.45 18 21 11 45 16.51 7006' 2531' B4 B3 1.189 0.4731 0.1311 0.0524 11.66 4.639 1.286 0.5139 0.050.15 0.29 0.06 SB1.5-4518 SB1.5-1845 SB2-4518 [DXF | DWG | 3D CAD] SB2-1845 [DXF | DWG | 3D CAD] 2 45 18 12 10 48 32 90 36 90.91 41.15 40 60 27.91 28.69 23.14 16.03 15 14.2 25 27.5 14 62.24 23.11 7006' 2531' B4 B3 2.735 1.088 0.3109 0.1244 26.82 10.67 3.049 1.22 0.060.16 0.66 0.16 SB2-4518 SB2-1845 SB2.5-4518 [DXF | DWG | 3D CAD] SB2.5-1845 [DXF | DWG | 3D CAD] 2.5 45 18 15 12 55 40 112.5 45 113.64 51.44 50 72 35.06 33.31 28.92 17.04 18 14.75 31 31.5 18 76.53 26.82 7006' 2531' B4 B3 5.441 2.164 0.6317 0.2527 53.36 21.22 6.195 2.478 0.070.17 1.27 0.29 SB2.5-4518 SB2.5-1845 SB3-4518 [DXF | DWG | 3D CAD] SB3-1845 [DXF | DWG | 3D CAD] 3 45 18 20 16 65 48 135 54 136.37 61.72 60 85 41.86 38.04 34.71 19.05 22 16.3 37 36 21 92.96 33.41 7006' 2531' B4 B3 9.23 3.672 1.094 0.4374 90.51 36.01 10.73 4.289 0.080.18 2.05 0.45 SB3-4518 SB3-1845 SB4-4518 [DXF | DWG | 3D CAD] SB4-1845 [DXF | DWG | 3D CAD] 4 45 18 20 20 80 62 180 72 181.82 82.3 75 110 51.16 48.28 41.28 22.06 24 18 45 46 29 22.33 45.83 7006' 2531' B4 B3 22.39 8.906 2.734 1.094 219.6 87.34 26.81 10.73 0.120.27 4.8 1 SB4-4518 SB4-1845 SB5-4518 [DXF | DWG | 3D CAD] SB5-1845 [DXF | DWG | 3D CAD] 5 45 18 25 20 100 80 225 90 227.28 102.87 90 135 59.43 55.82 47.85 25.07 28 20.5 51 52.5 34 156.56 56.9 7006' 2531' B4 B3 41.91 16.67 5.282 2.113 411 163.5 51.8 20.72 0.140.34 8.7 2 SB5-4518 SB5-1845

Pitch Angle Gear 6812' Pinion 2148'

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.
CAUTION:	Dimensions of the outside diameter, the overall length and crown to back length are alltheoretical 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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