LM Holden
LM Holden Bearings
LM Holden or standard bearings is rated to 750kg for 39mm Round axles and 1000kg for 40mm Square Axles.
A 750kg standard bearing kit comprises
- Small Outer – LM11949 – ID 19.05mm – OD 45.20mm
- Large Inner – LM67048 – ID 31.75mm 0 OD 59.10mm
The ATM (Aggregate Trailer Mass) of a trailer is determined by
- Spring Rating
- Axle Rating
- Bearing Rating
Where the lowest rating of any of the above components signifies the trailer ATM.
How to calculate trailer ATM
- Weight of the bare trailer
- Weight of the payload
- Jockey Wheel Weight
Changing the lowest common denominator above changes the trailer ATM.
1250kg composite bearings kits fit 40mm Square Axles only.
The 1250kg composite kit comprises
- Small Outer – LM12749 – ID 22mm – OD 45.20mm
- Large Inner – LM67048 – ID 31.75mm 0 OD 59.10mm
It is unusual to install a 39mm round axle in tandem. Axles upgrade to 40mm is common in this instance.
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