KHK Gears - Thin Face Spur Gears (SSY)

Unit of Measure

Items	SSY0.8-20 KHK SSY0.8-20, Module 0.8, 20 Tooth, Carbon Steel Thin Face Spur Gears	SSY0.8-20A KHK SSY0.8-20A, Module 0.8, 20 Tooth, Carbon Steel Thin Face Spur Gears	SSY0.8-25 KHK SSY0.8-25, Module 0.8, 25 Tooth, Carbon Steel Thin Face Spur Gears	SSY0.8-25A KHK SSY0.8-25A, Module 0.8, 25 Tooth, Carbon Steel Thin Face Spur Gears	SSY0.8-30 KHK SSY0.8-30, Module 0.8, 30 Tooth, Carbon Steel Thin Face Spur Gears
Gear Type	N/A Spur Gears
Construction	N/A Carbon Steel Thin Face Spur Gears
Bore Type	N/A Plain	N/A Finished	N/A Plain	N/A Finished	N/A Plain
Module	N/A 0.8
No. of Teeth	N/A 20	N/A 20	N/A 25	N/A 25	N/A 30
Shape	N/A S1	N/A S1T	N/A S1	N/A S1T	N/A S1
Bore Diameter (A)	N/A 0.197 in5 mm
Hub Diameter (B)	N/A 0.531 in13.5 mm	N/A 0.531 in13.5 mm	N/A 0.669 in17 mm	N/A 0.669 in17 mm	N/A 0.787 in20 mm
Pitch Diameter (C)	N/A 0.630 in16 mm	N/A 0.630 in16 mm	N/A 0.787 in20 mm	N/A 0.787 in20 mm	N/A 0.945 in24 mm
Outer Diameter (D)	N/A 0.693 in17.6 mm	N/A 0.693 in17.6 mm	N/A 0.850 in21.6 mm	N/A 0.850 in21.6 mm	N/A 1.008 in25.6 mm
Face Width (E)	N/A 0.157 in4 mm
Hub Width (F)	N/A 0.315 in8 mm
Total Length (G)	N/A 0.472 in12 mm
Keyway (W x D)	N/A
Set Screw Size	N/A	N/A M4	N/A	N/A M4	N/A
Set Screw Offset (J)	N/A	N/A 0.157 in4 mm	N/A	N/A 0.157 in4 mm	N/A
Bending Strength	N/A 1.47 N·m0.15 kgf·m	N/A 1.47 N·m0.15 kgf·m	N/A 2.03 N·m0.21 kgf·m	N/A 2.03 N·m0.21 kgf·m	N/A 2.6 N·m0.27 kgf·m
Surface Durability	N/A 0.085 N·m0.0087 kgf·m	N/A 0.085 N·m0.0087 kgf·m	N/A 0.134 N·m0.014 kgf·m	N/A 0.134 N·m0.014 kgf·m	N/A 0.197 N·m0.02 kgf·m
Backlash	N/A 0-0.0039 in0-0.10 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
Surface Treatment	N/A Black oxide coating
Tooth Hardness	N/A less than 194HB
Weight	N/A 0.013 kg0.029 lb	N/A 0.013 kg0.029 lb	N/A 0.022 kg0.049 lb	N/A 0.022 kg0.049 lb	N/A 0.032 kg0.071 lb