13
Figure 3 shows the torque at which the sample Fairloc® gears started to slip on the shaft.
All gears and shafts were made of 303 Stainless Steel. Gear bores were within +0.0075 mm of nominal values.
Shafts had surface finishes of 0.4 mm maximum and were within –0.005 mm of the nominal diameters.
Figure 4 compares the slip torques for different values of the clamping screw fastening torques.
METRIC BORE TORQUE DATA
For best results, the space between the
component bore and shaft O.D. should be
controlled closely. In addition, lubricating the
clamping screw with molybdenum disulfide
grease will improve the clamping action.
Caution: Do not tighten screws without shaft
in the bore. Doing so will create a permanent
set of wedge section which will prevent the
shaft from going in.
Figure 3
Figure 4
Fairloc® — The Integral Fastener
