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 Induction hardened teeth

B3 B4

Gear Ratio 1.5

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 SBSG2-3020R [ DXF| DWG | 3D CAD] SBSG2-2030L [ DXF| DWG | 3D CAD] R L 2 30 20 12 10 35 30 60 40 61.6 43.55 40 45 26.6 24.91 21.2 16.18 15 11.67 23 22 11 11 37.56 21.34 6043' 3740' B4 B3 1.436 0.9797 1.444 0.9625 14.08 9.607 14.16 9.439 0.050.11 0.25 0.12 SBSG2-3020R SBSG2-2030L SBSG2.5-3020R [ DXF| DWG | 3D CAD] SBSG2.5-2030L [ DXF| DWG | 3D CAD] R L 2.5 30 20 15 12 45 40 75 50 77.09 54.43 50 55 33.86 30.88 26.56 18.98 18 14.17 30 28 15 15 45.61 27.42 6101' 3741' B4 B3 2.961 2.02 3.029 2.019 29.04 19.81 29.7 19.8 0.060.12 0.55 0.23 SBSG2.5-3020R SBSG2.5-2030L SBSG3-3020R [ DXF| DWG | 3D CAD] SBSG3-2030L [ DXF| DWG | 3D CAD] R L 3 30 20 16 16 50 45 90 60 92.21 65.58 55 70 35.34 40.17 26.66 26.86 17 20 31 37 17 17 57.14 34.71 5920' 3845' B4 B3 4.94 3.37 5.135 3.424 48.44 33.05 50.36 33.58 0.070.13 0.8 0.5 SBSG3-3020R SBSG3-2030L SBSG4-3020R [ DXF| DWG | 3D CAD] SBSG4-2030L [ DXF| DWG | 3D CAD] R L 4 30 20 20 20 70 60 120 80 122.85 87.34 75 90 47.49 48.17 37.14 32.45 25 23.33 40 43 20 20 78.59 46.89 5852' 3825' B4 B3 10.79 7.36 11.52 7.683 105.8 72.18 113 75.34 0.10.16 1.8 1.1 SBSG4-3020R SBSG4-2030L

Pitch Angle Gear 5619' Pinion 3341'

Gear Ratio 2

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 SBSG2-4020R [ DXF| DWG | 3D CAD] SBSG2-2040L [ DXF| DWG | 3D CAD] R L 2 40 20 12 12 40 32 80 40 81 44.1 45 60 32.26 34 25.99 21 18 18 27 32 15 15 48.8 21.11 6520' 2958' B4 B3 2.598 1.302 2.725 1.362 25.48 12.77 26.72 13.36 0.050.11 0.5 0.19 SBSG2-4020R SBSG2-2040L SBSG2.5-4020R [ DXF| DWG | 3D CAD] SBSG2.5-2040L [ DXF| DWG | 3D CAD] R L 2.5 40 20 15 12 50 40 100 50 101.27 55.2 55 75 39.65 43.61 31.27 26.3 20 22.5 34 40 20 20 59.26 20.53 6550' 3018' B4 B3 5.268 2.639 5.62 2.81 51.66 25.88 55.11 27.56 0.060.12 1.1 0.4 SBSG2.5-4020R SBSG2.5-2040L SBSG3-4020R [ DXF| DWG | 3D CAD] SBSG3-2040L [ DXF| DWG | 3D CAD] R L 3 40 20 20 16 60 50 120 60 121.48 66.07 65 90 45.76 50.63 36.47 31.52 24 27.5 38 47 22 22 73.78 29.63 6503' 2950' B4 B3 8.651 4.334 9.375 4.687 84.84 42.5 91.94 45.96 0.070.13 1.6 0.7 SBSG3-4020R SBSG3-2040L SBSG4-4020R [ DXF| DWG | 3D CAD] SBSG4-2040L [ DXF| DWG | 3D CAD] R L 4 40 20 20 20 70 60 160 80 162.07 88.5 80 120 53.69 66.24 42.07 42.12 28 35 45 62 28 28 102.39 42.8 6530' 3047' B4 B3 19.92 9.981 22.15 11.08 195.3 97.88 217.2 108.7 0.10.16 3.3 1.5 SBSG4-4020R SBSG4-2040L

Pitch Angle Gear 6326' Pinion 2634'

Gear Ratio 3

Module 23

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 SBSG2-4515R [ DXF| DWG | 3D CAD] SBSG2-1545L [ DXF| DWG | 3D CAD] R L 2 45 15 12 10 40 24 90 30 90.67 34.78 40 60 30.29 29.66 26.01 15.8 17 14 26 29 15 15 59.07 19.15 7325' 2250' B4 B3 3.551 1.138 2.868 0.9562 34.82 11.16 28.13 9.377 0.050.11 0.7 0.1 SBSG2-4515R SBSG2-1545L SBSG2.5-4515R [ DXF| DWG | 3D CAD] SBSG2.5-1545L [ DXF| DWG | 3D CAD] R L 2.5 45 15 15 12 50 30 112.5 37.5 113.32 43.36 50 75 38.25 38.27 32.47 19.73 22 17.5 35 37 20 20 72.82 20.48 7313' 2222' B4 B3 6.012 1.926 4.925 1.642 58.96 18.89 48.3 16.1 0.060.12 1 0.2 SBSG2.5-4515R SBSG2.5-1545L SBSG3-4515R [ DXF| DWG | 3D CAD] SBSG3-1545L [ DXF| DWG | 3D CAD] R L 3 45 15 20 15 60 38 135 45 135.99 52.08 55 90 40.59 44.98 33.98 23.68 20 21.33 35 44 23 23 88.2 28.52 7318' 2232' B4 B3 10.13 3.244 8.41 2.803 99.34 31.81 82.47 27.49 0.070.13 1.8 0.35 SBSG3-4515R SBSG3-1545L

Pitch Angle Gear 7134' Pinion 1826'

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.
USEFUL HINT:	Ground spiral bevel gears are generally used in high-speed applications. Assembly accuracy, mounting method and lubrication are essential in safe and trouble-free operations. Please consult the beginning of this section. For lubrication, see "Lubrication of Gears" in the technical section.

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