40mm Square Stub Axle
$40.50 – $78.75
Brand: Couplemate 
Australian-made stub axles.
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40mm Square Stub Axle
40mm square stub axle LM or otherwise known as a standard profile.
The axle length is measured from tip to tip. The Stub Axle is supplied with a nut, washer, and split pin.
The stub axle is supplied with a nut, washer, and split pin.
Welding a 40mm Square Stub into a 50mm tube with 5mm walls makes a 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.
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 four 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
| Inner LM Bearing Sizes | ID 31.75mm | OD 59.10mm |
| Outer LM Bearing Sizes | ID 19.05mm | OD 45.20mm |
| LM Seal | ID 37.5mm | OD 59.10mm |
| Dust Cap | 45.20mm |
Rated to 500kg per Stub or 1000kg per pair.
Dimensions
- 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 a 50sq tube and weld them into position for use on narrow trailers.
The links below contain a variety of stub axles we manufacture.
- 39mm Round Stub
- 45mm Round Stub
- 45mm Round Stub PLL
- 45mm Square Stub
- 50mm Round Stub
- 50mm Square Stub
- 725kg Stub Axle Insert
- Tie-Down or Dexter Torsion Axle Spindle
- Trailing Arm Suspension Stub Axle
How undersized axles cause caravan parts to fatigue.
40mm Square Stub Axle
Additional information
| Weight | 2.5 kg |
|---|---|
| Dimensions | 30 × 4 × 4 cm |
| Stub Length | 250mm, 300mm, 350mm, 400mm, 500mm |
Our Service Lifetime Warranty
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Couplemate™ is a manufacturer and vendor of high-quality towing, trailer, and caravan components. Couplemate™ Core Goods and Custom Work are guaranteed to be free of defects for the service lifetime of the product when used as intended.
Warranties are non-transferrable and Couplemate™ requires satisfactory proof of purchase prior to issuing a remedy. The full Couplemate™ Warranty Policy can be found in the Terms & Conditions: Section 8 – Consumer Guarantees & Warranty.
Warranties are in addition to your rights under the Australian Consumer Law. If something is wrong with your order, please contact our team.
60-Day Returns
After 60 years of experience, we know that life has its unpredictable moments.
All Couplemate™ orders (online, over the phone, or in-store) have a 60 day period for change-of-mind returns and exchanges. There are some items that can’t be returned and some returns may incur a 15% restocking fee.
You can view our full policy for change-of-mind returns here.
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