Spacer-Tech’s bearing spacer system must be completed with a heavy duty axle nut – either the Castle axle nut or the Stemco Pro-Torq axle nut. The torque settings for the axle nut is 600ft/lbs after the spacer has been set to give a .003” to .005” end float. The spacer can be used with either oil or grease lubrication to lubricate the axle bearings.
The Pro-Torq or Castle Nut System are both wide and hardened nuts, allowing the fitter to generate enough pressure to obtain the 600ft/lbs needed to seat all the components together without fear of the axle nut tool slipping.
