40mm Square Hydraulic Drum Brake Kit – 1000kg

$576.84$631.00 inc GST

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40mm Square Hydraulic Drum braked axle assembly to suit 9" drums. Suits 2000kg override couplings with a master cylinder. Single Axle rating 1000kg.

The rating of this axle is 1000kg as this axle uses standard holden bearings.

Axle Rating of 1000kg is Controlled by Bearing Sizes

  • 11949 - Outer Bearing.
  • 67048 - Inner Bearing.

9" hydraulic braked axles are very simple to install. Attached the Hydraulic backing plates to a weld ring, welded to the rear of the axle shoulder.

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 40mm square hydraulic drum braked axle is finished once the other end is completed.

The disc braked axle is another popular mechanical braked axle.

40mm Square Hydraulic Drum Installation help

Other 9" mechanical and hydraulic braked axles here:

Calculating The Correct Axle Measurements

As a result of viewing the video above, calculate the face to face measurement.
  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.

Metric to Imperial Converter

Convert Imperial (inches) to metric (mm)

  • =

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 number.

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


40mm Square Hydraulic Drum Brake Axle assembly | 9 inch

Additional information

Weight 180 kg
Dimensions 90 × 90 × 90 cm
Stud Pattern

Ford 5 Stud, HT Holden, HQ Holden, Commodore, Land Cruiser 6S, Land Cruiser 5S

Face to Face Length

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