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Unit of Measure

Specifications

Gear Type

N/A Racks

Construction

N/A Helical Gears

Module

N/A 3

No. of teeth

N/A 30

Profile Shift Coefficient

N/A +0.418

Shape

N/A S1

Bending Strength

N/A 384 N·m39.2 kgf·m

Surface Durability

N/A 127 N·m12.9 kgf·m

Backlash

N/A 0.0047-0.001 in0.12-.026 mm

Precision Grade

N/A JIS grade N8 (JIS B1702-1: 1998)

Reference Section of Gear

N/A Normal Plane

Gear Teeth Type

N/A Standard Full Depth

Direction of Rotation

N/A 19° 31’ 41’’ left helix

Pressure Angle

N/A 20 º

Material

N/A S45C

Tooth Hardness

N/A (less than 194HB)

Surface Treatment

N/A Black oxide coating

Weight

N/A 2.47 kg5.445 lb

Dimensions

Bore (A)

N/A 0.984 in25 mm

Hub Diameter (B)

N/A 3.346 in85 mm

Pitch Diameter (C)

N/A 3.759 in95.49 mm

Outer Diameter (D)

N/A 4.094 in104 mm

Face Width (E)

N/A 1.181 in30 mm

Hub Width (F)

N/A 0.787 in20 mm

Total Length (G)

N/A 50 mm1.969 in

Distance Travled In One Turn

N/A 11.811 in300 mm