40mm Square Hydraulic Drum Brake Kit – 1000kg

$576.00$631.00

SKU: 40S9H Category:
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40mm Square Hydraulic Drum Brake Kit

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.

An 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 are the Hydraulic backing plates to a weld ring, welded to the rear of the axle shoulder.

The hardest part of the job is aligning the weld rings perfectly.

We recommend customers dry-fit the backing plates and weld the 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 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 completed 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:

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

Calculating The Correct Axle Measurements

  1. Measure the offset wheel. The wheel offset is the distance between the hub’s inside and the rubber’s outside.
  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 numbers.

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

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