KHK Gears - Steel Internal Gears (SI)

Unit of Measure

Items	SI0.5-100 KHK SI0.5-100, Module 0.5, 100 Tooth, Internal Ring Gears	SI0.5-60 KHK SI0.5-60, Module 0.5, 60 Tooth, Internal Ring Gears	SI0.5-80 KHK SI0.5-80, Module 0.5, 80 Tooth, Internal Ring Gears	SI0.8-100 KHK SI0.8-100, Module 0.8, 100 Tooth, Internal Ring Gears	SI0.8-60 KHK SI0.8-60, Module 0.8, 60 Tooth, Internal Ring Gears
Gear Type	N/A Internal Gears
Construction	N/A Internal Ring Gears
Module	N/A 0.5	N/A 0.5	N/A 0.5	N/A 0.8	N/A 0.8
No. of teeth	N/A 100	N/A 60	N/A 80	N/A 100	N/A 60
Shape	N/A T1
Bending Strength	N/A 5.97 N·m0.61 kgf·m	N/A 3.75 N·m0.38 kgf·m	N/A 4.85 N·m0.49 kgf·m	N/A 24.5 N·m2.5 kgf·m	N/A 15.4 N·m1.57 kgf·m
Surface Durability	N/A 0.87 N·m0.0887 kgf·m	N/A 0.67 N·m0.0683 kgf·m	N/A 0.75 N·m0.0765 kgf·m	N/A 3.75 N·m0.38 kgf·m	N/A 2.87 N·m0.29 kgf·m
Backlash	N/A 0.0016-0.0059 in0.04-0.15 mm	N/A 0.0016-0.0059 in0.04-0.15 mm	N/A 0.0016-0.0059 in0.04-0.15 mm	N/A 0.002-0.0063 in0.05-0.16 mm	N/A 0.002-0.0063 in0.05-0.16 mm
Precision Grade	N/A JIS grade N8 (JIS B1702-1:1998)
Gear Teeth Type	N/A Standard Full Depth
Pressure Angle	N/A 20 º
Material	N/A S45C (AISI 1045) Carbon Steel
Tooth Hardness	N/A (less than 194HB)
Surface Treatment	N/A Black oxide coating
Weight	N/A 0.074 kg0.163 lb	N/A 0.049 kg0.108 lb	N/A 0.062 kg0.137 lb	N/A 0.23 kg0.507 lb	N/A 0.16 kg0.353 lb
Internal Diameter (A)	N/A 1.929 in49 mm	N/A 1.142 in29 mm	N/A 1.535 in39 mm	N/A 3.087 in78.4 mm	N/A 1.827 in46.4 mm
Pitch Diameter (C)	N/A 1.969 in50 mm	N/A 1.181 in30 mm	N/A 1.575 in40 mm	N/A 3.150 in80 mm	N/A 1.890 in48 mm
Outer Diameter (D)	N/A 2.756 in70 mm	N/A 1.969 in50 mm	N/A 2.362 in60 mm	N/A 4.134 in105 mm	N/A 2.953 in75 mm
Face Width (E)	N/A 0.197 in5 mm	N/A 0.197 in5 mm	N/A 0.197 in5 mm	N/A 0.315 in8 mm	N/A 0.315 in8 mm