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MAINTENANCE • MACHINE TOOL SPINDLES

Quick Reference Data Sheets

For Ball Screw Support Bearings Only:

*Procedure for making a Duplex Set from one Quad set of bearings.

  • 1.

    Physically remove the bearings from their box(es).

  • 2.

    Without removing the bearing from the plastic bags, locate the laser “V,, mark and the laser marked code on the outer ring (O.D.). The laser “V” mark on the

    • O.

      D. of the quad set is used to orient the bearings in a back-to-back configuration. The laser mark code will be a single letter. There are four possible letters, either “A, B, C, or D”.

Note: There are two possible combinations of markings that can be on the outer rings of a QUAD set of bearings. One combination is having the two bearings in tandem marked with an “A” opposed by two bearings in tandem marked with a “D”. The second combination is having two bearings in tandem marked with a “B” opposed by two bearings in tandem marked with a “C”. Refer to possible combinations below.

or

A

A

D

D

B

B

C

C

3. Duplex Sets should be matched according to the following procedure.

The two outer bearings should be paired together to form one set of duplex bearings and the two inner bearings will form the other pair.

(example)

or

A

D

A

D

or

B

C

B

C

E62

102800

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