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KHK SHE1.5-20L, Module 1.5, 20 Tooth, Left Hand Carbon Steel Helical Gears
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KHK SHE1.5-25L, Module 1.5, 25 Tooth, Left Hand Carbon Steel Helical Gears
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KHK SHE1.5-30L, Module 1.5, 30 Tooth, Left Hand Carbon Steel Helical Gears
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KHK SHE2-18L, Module 2, 18 Tooth, Left Hand Carbon Steel Helical Gears
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KHK SHE2-24L, Module 2, 24 Tooth, Left Hand Carbon Steel Helical Gears
Gear Type N/A Racks
Construction N/A Helical Gears
Module N/A 1.5 N/A 1.5 N/A 1.5 N/A 2 N/A 2
No. of teeth N/A 20 N/A 25 N/A 30 N/A 18 N/A 24
Profile Shift Coefficient N/A +0.390 N/A +0.404 N/A +0.418 N/A +0.451 N/A +0.268
Shape N/A S1
Bore (A) N/A 0.394 in10 mm N/A 0.472 in12 mm N/A 0.591 in15 mm N/A 0.472 in12 mm N/A 0.591 in15 mm
Hub Diameter (B) N/A 0.984 in25 mm N/A 1.378 in35 mm N/A 1.575 in40 mm N/A 1.181 in30 mm N/A 1.772 in45 mm
Pitch Diameter (C) N/A 1.253 in31.83 mm N/A 1.567 in39.79 mm N/A 1.880 in47.75 mm N/A 1.504 in38.2 mm N/A 2.005 in50.93 mm
Outer Diameter (D) N/A 1.417 in36 mm N/A 1.732 in44 mm N/A 2.047 in52 mm N/A 1.732 in44 mm N/A 2.205 in56 mm
Face Width (E) N/A 0.709 in18 mm N/A 0.709 in18 mm N/A 0.709 in18 mm N/A 0.984 in25 mm N/A 0.984 in25 mm
Hub Width (F) N/A 0.551 in14 mm N/A 0.551 in14 mm N/A 0.551 in14 mm N/A 0.630 in16 mm N/A 0.630 in16 mm
Total Length (G) N/A 32 mm1.260 in N/A 32 mm1.260 in N/A 32 mm1.260 in N/A 41 mm1.614 in N/A 41 mm1.614 in
Distance Travled In One Turn N/A 3.937 in100 mm N/A 4.921 in125 mm N/A 5.906 in150 mm N/A 4.724 in120 mm N/A 6.299 in160 mm
Bending Strength N/A 35.6 N·m3.63 kgf·m N/A 46.5 N·m4.75 kgf·m N/A 57.6 N·m5.87 kgf·m N/A 78.2 N·m7.98 kgf·m N/A 107 N·m10.9 kgf·m
Surface Durability N/A 5.89 N·m0.6 kgf·m N/A 10.3 N·m1.05 kgf·m N/A 16.3 N·m1.66 kgf·m N/A 11.2 N·m1.15 kgf·m N/A 24.4 N·m2.48 kgf·m
Backlash N/A 0.0031-0.0079 in0.08-0.20 mm N/A 0.0031-0.0079 in0.08-0.20 mm N/A 0.0031-0.0079 in0.08-0.20 mm N/A 0.0039-0.0087 in0.10-0.22 mm N/A 0.0039-0.0087 in0.10-0.22 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 0.16 kg0.353 lb N/A 0.26 kg0.573 lb N/A 0.36 kg0.794 lb N/A 0.3 kg0.661 lb N/A 0.56 kg1.235 lb