45mm Nylon Spring Bush suit Caravan Trailer in 1/2″, 9/16″ and 5/8″ ID
45mm Spring Bush to suit most 45mm wide springs, including galvanised boat trailer slipper springs. Couplemate bushes are a precision fit.
It can be difficult to find a good nylon bush. The best nylon bushes have the following qualities:
- Good fit both externally and internally.
- The material should not chatter or chip upon insertion.
- Shackle bolts should not be loose inside the nylon bush. New bolts can be purchased at this link.
- Your bush should be a tight fit inside your spring.
45mm Nylon Spring Bush is available in the following sizes
- 1/2 x 7/8 x 45mm
- 9/16 x 7/8 x 45mm
- 9/16 x 3/4 x 45mm
- 5/8 x 7/8 x 45mm
- 1/2 x 3/4 x 45mm
Nylon bushes are popular because they are self-lubricating and hard-wearing. As a precautionary measure replace shackle bolts when replacing nylon bushes.
Check your shackle bolts for wear during your pre-trip inspections.
TIP: Replacing your old bush is easy. Simply place the new bush on top of the old bush and knock the new bush in with a hammer.
In some cases, owners may wish to insert steel bushes and switch to a greaseable shackle system. New hardened steel bushes are available from our Couplemate retail store.
Spring bushes shackle bolts and shackle plates are all subject to vibration fatigue. Read about vibration fatigue here.