KHK Gears - Steel Miter Gears (SM)

Unit of Measure

Items	SM1.25-20 KHK SM1.25-20, Module 1.25, 20 Tooth, Carbon Steel Miter Gears	SM1.25-25 KHK SM1.25-25, Module 1.25, 25 Tooth, Carbon Steel Miter Gears	SM1.25-30 KHK SM1.25-30, Module 1.25, 30 Tooth, Carbon Steel Miter Gears	SM1.5-20 KHK SM1.5-20, Module 1.5, 20 Tooth, Carbon Steel Miter Gears	SM1.5-25 KHK SM1.5-25, Module 1.5, 25 Tooth, Carbon Steel Miter Gears
Gear Type	N/A Miter Gears
Construction	N/A Carburized Alloy Steel Miter Gears
Bore Type	N/A Plain
Gear Ratio	N/A 1
Module	N/A 1.25	N/A 1.25	N/A 1.25	N/A 1.5	N/A 1.5
No. of Teeth	N/A 20	N/A 25	N/A 30	N/A 20	N/A 25
Shape	N/A B3
Bore (A)	N/A 0.315 in8 mm	N/A 0.315 in8 mm	N/A 0.394 in10 mm	N/A 0.315 in8 mm	N/A 0.394 in10 mm
Hub Diameter (B)	N/A 0.866 in22 mm	N/A 0.984 in25 mm	N/A 1.181 in30 mm	N/A 1.024 in26 mm	N/A 1.181 in30 mm
Pitch Diameter (C)	N/A 0.984 in25 mm	N/A 1.230 in31.25 mm	N/A 1.476 in37.5 mm	N/A 1.181 in30 mm	N/A 1.476 in37.5 mm
Outer Diameter (D)	N/A 1.054 in26.77 mm	N/A 1.300 in33.02 mm	N/A 1.546 in39.27 mm	N/A 1.265 in32.12 mm	N/A 1.560 in39.62 mm
Mounting Distance (E)	N/A 0.906 in23 mm	N/A 1.102 in28 mm	N/A 1.417 in36 mm	N/A 1.181 in30 mm	N/A 1.339 in34 mm
Total Length (F)	N/A 0.601 in15.27 mm	N/A 0.704 in17.88 mm	N/A 0.924 in23.47 mm	N/A 0.836 in21.24 mm	N/A 0.876 in22.25 mm
Hub Width (H)	N/A 0.354 in9 mm	N/A 0.364 in9.25 mm	N/A 0.531 in13.5 mm	N/A 0.512 in13 mm	N/A 0.453 in11.5 mm
Length Of Bore (I)	N/A 0.512 in13 mm	N/A 0.630 in16 mm	N/A 0.827 in21 mm	N/A 0.748 in19 mm	N/A 0.748 in19 mm
Face Width (J)	N/A 0.315 in6 mm	N/A 0.315 in7 mm	N/A 0.394 in8 mm	N/A 0.315 in8 mm	N/A 0.394 in9 mm
Holding Surface Diameter (K)	N/A 0.513 in13.03 mm	N/A 0.736 in18.7 mm	N/A 0.881 in22.37 mm	N/A 0.605 in15.37 mm	N/A 0.769 in19.54 mm
Length from Crown to Back	N/A 0.448 in11.38 mm	N/A 0.522 in13.26 mm	N/A 0.714 in18.13 mm	N/A 0.632 in16.06 mm	N/A 0.642 in16.31 mm
Pressure Angle	N/A 20 º
Precision Grade	N/A JIS B 1704:1978 grade 3
Gear Teeth Type	N/A Gleason
Bending Strength	N/A 1.7 N·m0.17 kgf·m	N/A 2.75 N·m0.28 kgf·m	N/A 4.05 N·m0.41 kgf·m	N/A 3.12 N·m0.32 kgf·m	N/A 4.96 N·m0.51 kgf·m
Surface Durability	N/A 0.16 N·m0.017 kgf·m	N/A 0.31 N·m0.032 kgf·m	N/A 0.54 N·m0.055 kgf·m	N/A 0.3 N·m0.031 kgf·m	N/A 0.57 N·m0.59 kgf·m
Backlash	N/A 0.0016-0.0055 in0.04-0.14 mm	N/A 0.0016-0.0055 in0.04-0.14 mm	N/A 0.0016-0.0055 in0.04-0.14 mm	N/A 0.002-0.0059 in0.05-0.15 mm	N/A 0.002-0.0059 in0.05-0.15 mm
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 0.036 kg0.079 lb	N/A 0.063 kg0.139 lb	N/A 0.12 kg0.265 lb	N/A 0.074 kg0.163 lb	N/A 0.11 kg0.243 lb