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SECTION 6
6.1
WHEELS AND RIMS
6.1.1
HUB-PILOTED MOUNTING
Disc wheels are standard on LUFKIN trailers. These wheels may be either steel or aluminum. It is
important that the wheel nuts be tightened independently to the recommended torque values.
Hub piloted wheels are designed to center on the hub at the center hole or bore of the wheel (see
Figures 7 and 8). Because of this feature, they need a close tolerance in the center hole. Hub
piloted wheels are used with flange nuts (see Figure 8) which contact the disc face around the bolt
hole and do not rely on contacting the bolt hole chamfer to function properly. Hub piloted wheels
generally have straight through bolt holes with no chamfers which provides a visual way of
identifying hub piloted wheels. It is important to note that some hub piloted wheels and stud piloted
wheels may have the same bolt circle pattern. Therefore, they could mistakenly be interchanged.
Each mounting system requires its correct mating parts. It is important that the proper components
are used for each type of mounting and the wheels are fitted to the proper hubs.
Figure 6
Figure 7
Figure 8
