40mm Square Stub Axle

$22.75$43.05 inc GST

Engineered for Quality

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40mm Square Stub Axle is made by Couplemate

40mm Square Stub Axle LM Profile. Axles length is measured from tip to tip. Stub Axle supplied with nut, washer and split pin.

Stub Axle supplied with nut, washer and split pin.

Welding a 40mm Square Stub into 50mm tube with 5mm walls makes a very good farm trailer.

Select from an electric or marine turn. Electric turn suits both electric and hydraulic backing plates. Marine turn suits marine or unbraked axles.

Hollow Axles

Hollow axles are rated the same as solid solids up to 1600kg. This type of axle is commonly found on American imported trailers.

How to install a stub into a hollow tube

  • Cut the tube to length, including the stub measurement.
  • Drill a hole, no smaller than 12mm on all 4 sides. Mark the 50mm tube 25mm back from the end of the stub when inserted.
  • Insert the stub weld into place.
  • Weld the stub holes to secure the end of the stub into the tube.
  • Finally, the hollow axle stub must protrude past the springs and u-bolts once affixed into position.

LM Bearing Sizes are

Rated to 500kg per Stub or 1000kg per pair.


  • Tip to Shoulder including thread 115mm
  • Square part 135mm

We recommend you use only Japanese Bearings.

It is common to slide 40mm stub axles into 50sq tube and weld into position for use on narrow trailers.

The links below contained a variety of stub axles we manufacture.

Undersized axles cause caravan fatigue.

40mm Square Stub Axle

Couplemate Trailer Parts sells only the best quality 40mm Square Stub Axle and caravan spare parts throughout Australia.

Customers are welcome to either pickup or take advantage of our low freight rates. Express shipping to Melbourne, Sydney, Brisbane, Perth, Adelaide, Darwin, and Hobart.

We also ship products to New Zealand via Australia Post Air Express.

© Steve Wotherspoon February 26, 2017. Images and text may be copied, provided a link back to the copied page and the source is displayed where the content or image is located.

Additional information

Weight 2.5 kg
Dimensions 30 × 4 × 4 cm
Stub Length

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