QD Bushing is made of grey iron and surface phosphated. Galvanized is also available upon request.
Bushing No. Dimension(Inch) Stock Bore Range
A B D E F G L Bolt Circle Cap Screws Required Minimum Maximum
Standard Keyway Shallow Keyway
JA 5/16 1.375 2 11/16 9/16 1/8 1 1.665 3-10X24 3/8 1 1 1/4
SH 3/8 1.871 2 11/16 7/8 13/16 1/8 1 1/4 2 1/4 3-1/4X1 3/8 1/2 1 1/4 1 5/8
SDS 7/16 2.187 3 3/16 7/8 3/4 1/8 1 5/16 2 11/14 3-1/4X1 3/8 1/2 1 9/16 2
SK 1/2 2.812 3 7/8 1 3/8 1 1/4 1/8 1 7/8 3 5/16 3-5/16X2 1/2 2 2 5/8
SF 1/2 3.125 4 5/8 1 1/2 1 1/4 1/8 2 3 7/8 3-3/8X2 1/2 2 1/4 2 15/16
E 3/4 3.834 5 1 7/8 1 5/8 1/8 2 5/8 5 3-1/2X2 1/2 7/8 2 3/4 3 1/2
F 13/16 4.437 6 5/8 2 13/16 2 1/2 3/16 3 5/8 5 5/8 3-9/16X3 1/2 1 3 1/4 3 15/16
J 1 5.148 7 1/4 3 1/2 3 13/16 3/16 4 1/2 6 1/4 3-5/8X4 1/2 1 7/16 3 5/8 4 7/16
M 1 1/4 6.500 9 5 1/2 5 3/16 3/16 6 3/4 7 7/8 4-3/4X6 3/4 2 4 11/16 5 1/2
N 1 1/2 7.000 10 6 5/8 6 1/4 3/4 8 1/8 8 1/2 4-7/8X8 2 1/2 5 5 7/8
P+ 1 3/4 8.250 11 3/4 7 5/8 7 1/4 3/4 9 3/8 10 4-1X9 1/2 2 15/16 5 11/16 7
W+ 2 10.437 15 9 3/4 9 1/4 11 3/8 12 3/4 4-1 1/8X11 4 7/16 7 8 1/2
S+ 3 1/4 12.125 17 3/4 12 1/2 12 3/8 15 3/4 15 5-1 1/4X15 1/2 6 8 1/4 10
Used throughout the industry offering convenience and design flexibility.They are precisely machined of quality grey iron and are installed by tightening several cap screws. Some of the power transmission products which use QD bushings are pulleys, sprockets, sheaves and couplings, unlimited-fans, impellers or any product which needs to be shaft mounted.
If you have any questions about our products, please contact us immediately !