• Topic ID: id_15460804
  • Version: 2.0
  • Date: Nov 8, 2018 1:39:41 AM

Grease Main Bearing

1 Overview

Use Polyrex grease (1 oz. cartridge 2347076) to grease the Rotek bearings every 2,000,000 revolutions.

note:

This procedure is specific to this PM. Do not apply grease to the gantry bearing outside of the normal PM interval for any reason without first consulting MI&CT Engineering personnel.

  • Only use grease gun 46-297931P1. It delivers approximately 1cc of grease per pump. A new cartridge contains approximately 30cc of grease. This is enough grease for multiple PM intervals.

  • The gantry requires very little grease. Never apply more than 8 pumps of the grease gun handle at each PM interval.

  • Do not apply pressure to the spring-loaded handle at the bottom of the grease gun while adding grease to the gantry.

2 Procedures

  1. The fitting location may be hidden by slip ring brackets. Rotate the gantry by hand to find the fitting.

  2. Make sure the grease gun contains a cartridge with grease in it. Prime the grease gun by pumping the grease gun handle until grease comes out of the end. Wipe off the excess grease.

  3. Apply the primed grease gun to the grease fitting and pump the handle ONLY 2 times (see Figure 1).

    Figure 1. Rotek Grease Fitting Location

  4. Remove the grease gun from the fitting.

  5. Rotate the gantry approximately 180 degrees.

    note:

    The ball race turns at half-speed. Rotating the gantry 180 degrees results in the ball bearing rotating 90 degrees.

  6. Re-connect the grease gun to the fitting and apply 2 pumps of grease.

  7. Repeat steps 4 - 6 two more times until you have added 8 total pumps (8cc) of grease to the gantry bearing.

    note:

    Do not exceed 8 pumps total at each PM interval.

  8. Record the current number of rotations with a permanent marker near the grease fitting.

  9. Indicate on the PM Report Form that grease was added to the main bearing.