45mm Round Mechanical Drum Brake Kit – 1450kg

$605.55 - $640.20

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45mm Round Mechanical Drum Brake Axle assembly – 9 inch


45mm Round Mechanical Drum braked axle assembly to suit 9″ drums. Suits 2000kg override couplings. Single Axle rating 1450kg.

Round axles are ideal for trailers up to 2000 meters, however, axles over 2000 meters can tend to bow in the middle. We recommend using square axles for lengths longer than 2 meters.

The rating of this axle is 1450kg as this axle uses Ford Slimline bearings. Axle rating is controlled by bearing sizes.

  • 12749 – Outer Bearing.
  • 68149 – Inner Bearing.

How to measure wheel offset

9″ mechanically braked axles are very simple to install. Attach the mechanical backing plates to a weld ring, welded to the rear of the axle shoulder.

Mechanical weld rings are identical to electric weld rings. The hardest part of the entire job is to align the weld rings perfectly.

We recommend customers dry-fit the backing plates and weld ring, without grease. Once the drum is in position and locked with the axle nut, tighten the brake shoes.

Align the backing perfectly with the drum and then spot weld the ring in 4 places. Re-adjust where necessary and then finished the welding on the ring.

Your 45mm round mechanical drum braked axle is finished once the other end is completed.

The disc braked axle is another popular mechanical braked axle.


Installation help


Calculating The Correct Axle Measurements

  1. Measure the offset wheel. The wheel offset is the distance between the inside of the hub and the outside of the rubber.
  2. Add 50 mm to the offset. Alternatively, choose your own distance between the rubber and the chassis.
  3. Multiply by 2 for both sides. Add your chassis width to the above number.

Still unsure of what measurements to take? Check out this handy guide below:

[P] – Check material specifications. What size and profile is the axle (for example, 45mm Square)
[T] – Overall axle length (tip to tip)
[F] – Hub face to hub face measurement
[A] – Chassis width
[C] – Tyre clearance
[B] – Back offset
[H] – Tyre to chassis
[G] – Axle pad centres

How To Measure An Axle


Identifying Bearing Combinations

You will also need to identify your bearing combination which can be done by pulling off a hub and bearings and locating the number laser engraved onto the bearing. You will require both the inner and the outer bearing numbers.

Where to identify bearing number. Look for the laser engraved number on the bearing.


Other 9″ mechanical and hydraulic braked axles here

  • 40mm Square Mechanical Drum Brake Kit – 1000kg
  • 40mm Square Hydraulic Drum Brake Kit – 1000kg
  • 45mm Round Hydraulic Drum Brake Kit – 1450kg
  • Square 45mm Mechanical Drum Brake Kit – 1450kg
  • Square 45mm Hydraulic Drum Brake Kit – 1450kg

Additional information

Weight70 kg
Dimensions240 × 50 × 50 cm
Stud Patternss

Ford (5 x 114.30mm), Holden HT (5 x 107.95mm), Holden HQ (5 x 120.65mm), Land Cruiser 6S, 5s Landcruiser (5 x 150mm)

Face to Face Length

1475mm – 58-inch, 1500mm – 59-inch, 1525mm – 60-inch, 1550mm – 61-inch, 1575mm – 62-inch, 1600mm – 63-inch, 1625mm – 64-inch, 1650mm – 65-inch, 1675mm – 66-inch, 1700mm – 67-inch, 1725mm – 68-inch, 1750mm – 69-inch, 1775mm – 70-inch, 1800mm – 71-inch, 1825mm – 72-inch, 1850mm – 73-inch, 1875mm – 74-inch, 1900mm – 75-inch, 1925mm – 76-inch, 1950mm – 77-inch, 1975mm – 78-inch, 2000mm – 79-inch, 2025mm – 80-inch, 2050mm – 81-inch, 2075mm – 82-inch, 2100mm – 83-inch, 2125mm – 84-inch, 2150mm – 85-inch, 2175mm – 86-inch, 2200mm – 87-inch, 2225mm – 88-inch, 2250mm – 89-inch, 2275mm – 90-inch, 2300mm – 91-inch, 2325mm – 92-inch, 2350mm – 93-inch

Axle Profile

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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