KHK Gears - Steel Worms (SW)

Unit of Measure

Items	SW0.5-R1 KHK SW0.5-R1, Module 0.5, Single Lead, Right Hand, Carbon Steel Worms	SW0.5-R2 KHK SW0.5-R2, Module 0.5, Double Lead, Right Hand, Carbon Steel Worms	SW0.8-R1 KHK SW0.8-R1, Module 0.8, Single Lead, Right Hand, Carbon Steel Worms	SW0.8-R2 KHK SW0.8-R2, Module 0.8, Double Lead, Right Hand, Carbon Steel Worms	SW1.25-R1 KHK SW1.25-R1, Module 1.25, Single Lead, Right Hand, Carbon Steel Worms
Gear Type	N/A Worm Gears
Construction	N/A Carbon Steel Worms
Bore Type	N/A Plain
Number of Start	N/A 1	N/A 2	N/A 1	N/A 2	N/A 1
Nominal Lead Angle	N/A 2°36'	N/A 5°13'	N/A 3°17'	N/A 6°34'	N/A 3°25'
Hand of Thread	N/A Right Hand
Module	N/A 0.5	N/A 0.5	N/A 0.8	N/A 0.8	N/A 1.25
Shape	N/A W2
Bore (L)	N/A 0.197 in5 mm	N/A 0.197 in5 mm	N/A 0.236 in6 mm	N/A 0.236 in6 mm	N/A 0.315 in8 mm
Hub Diameter (B)	N/A
Pitch Diameter (N)	N/A 0.433 in11 mm	N/A 0.433 in11 mm	N/A 0.551 in14 mm	N/A 0.551 in14 mm	N/A 0.827 in21 mm
Outer Diameter (O)	N/A 0.472 in12 mm	N/A 0.472 in12 mm	N/A 0.614 in15.6 mm	N/A 0.614 in15.6 mm	N/A 0.925 in23.5 mm
Face Width (E)	N/A 0.394 in10 mm	N/A 0.394 in10 mm	N/A 0.709 in18 mm	N/A 0.709 in18 mm	N/A 0.984 in25 mm
Hub Width (Q)	N/A
Total Length (R)	N/A 0.709 in18 mm	N/A 0.709 in18 mm	N/A 1.181 in30 mm	N/A 1.181 in30 mm	N/A 1.457 in37 mm
Keyway (W x D)	N/A
Set Screw Size	N/A M3	N/A M3	N/A M4	N/A M4	N/A M5
Set Screw Offset (S)	N/A 0.118 in3 mm	N/A 0.118 in3 mm	N/A 0.197 in5 mm	N/A 0.197 in5 mm	N/A 0.197 in5 mm
Precision Grade	N/A KHK W 001 grade 4
Reference Section of Gear	N/A Normal Plane
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 coated except for ground part
Weight	N/A 0.01 kg0.022 lb	N/A 0.01 kg0.022 lb	N/A 0.029 kg0.064 lb	N/A 0.029 kg0.064 lb	N/A 0.085 kg0.187 lb