Trailer Bearings

Here is how you tell what types of trailer bearings you have without taking them out.

A clear explanation is given here https://trailersparesdirect.com.au/blogs/technical-info/identifying-hub-types and this pdf is also helpful.

In summary, measure from centre of one stud to the next stud:

  • 64MM = HT HOLDEN
  • 68MM = FORD
  • 70MM = HQ

Also check the axle:

  • 39mm Round Axles - 750kg maximum operating weight per Axle. Runs LM (Holden) bearings
  • 40mm Square Axles - 1000kg maximum operating weight per Axle. Runs LM (Holden) bearings
  • 45mm Square Axles - 1500kg maximum operating weight per Axle. Runs SL (Ford) bearings

Here are the part numbers.

LM (Holden bearings) suit 39mm Round & 40 mm Square Axles - 1000kg weight capacity / pair
· Outer (small) bearings # LM 11949 - Bearing
 # LM 11910 - Cup
· Inner (large) bearings # LM 67048 - Bearing
 # LM 67010 - Cup

SL (Ford bearings) suit 45mm Square Axles - 1400kg weight capacity / pair
· Outer (small) bearings # L 12749 - Bearing
 # L 12710 - Cup
· Inner (large) bearings # L 68149 - Bearing
 # L 68110 - Cup

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