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MAINTENANCE • MACHINE TOOL SPINDLES

Quick Reference Data Sheets

For Ball Screw Support Bearings Only:

*Procedure for making a Triplex Set from two sets of Duplex Bearings.

  • 1.

    Physically remove the bearings from their boxes

  • 2.

    Without removing the bearings from their plastic bags, locate the laser marked code on the outer ring (O.D.). The marking will be a single letter. There are four possible letters, either “A, B, C, or D”.

Note: There are two possible combinations of marking that can be on the outer rings of a DUPLEX set of bearings. One combination is having one bearing marked with an “A” and the other with a “D”. The second combination is having one bearing marked with a “B” and the other with a “C”.

  • 3.

    Locate two sets of DUPLEX bearings (four bearings total) marked with “A” and “D” or two sets of bearings marked with “B” and “C”.

  • 4.

    Triplex Sets should be matched according to one of the following configurations.

I. Having two sets of bearings that are marked “A”, “D”. Match as shown below.

or

A

A

D

D

A

A

II. Having two sets of bearings that are marked “B”, “C”. Match as shown below.

or

B

B

C

C

C

B

102800

E61

MAINTENANCE MACHINE TOOL SPINDLES

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