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Unit of Measure

Specifications

Gear Type

 N/A Racks

Construction

 N/A Helical Gears

Module

 N/A 4

No. of teeth

 N/A 18

Profile Shift Coefficient

 N/A +0.201

Shape

 N/A S1

Bending Strength

 N/A 474 N·m48.3 kgf·m

Surface Durability

 N/A 89.8 N·m9.16 kgf·m

Backlash

 N/A 0.0063-0.0134 in0.16-0.34 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 1.99 kg4.387 lb

Dimensions

Bore (A)

 N/A 0.787 in20 mm

Hub Diameter (B)

 N/A 2.559 in65 mm

Pitch Diameter (C)

 N/A 3.007 in76.39 mm

Outer Diameter (D)

 N/A 3.386 in86 mm

Face Width (E)

 N/A 1.575 in40 mm

Hub Width (F)

 N/A 0.984 in25 mm

Total Length (G)

 N/A 65 mm2.559 in

Distance Travled In One Turn

 N/A 9.449 in240 mm