45mm Tandem Slipper Hanger Kit for Tandem Axles

Name: 45mm Tandem Slipper Hanger Kit for 6mm Slipper Springs
SKU: HANGER-KIT-45-SLIPPER-TANDEM

SKU: HANGER-KIT-45-SLIPPER-TANDEM Category: Spring Fittings & Hangers Tag: Spring Hanger Brand: Couplemate

Price

$39.95 Inc.GST

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45mm Tandem Slipper Hanger Kit for 6mm Slipper Springs

This 45mm tandem slipper hanger kit is suitable for tandem axle trailers up to 2400kg. Use only on 6mm springs with three leaf tails. (765mm eye to tail).

Use only on 6mm springs with three leaf tails. (765mm eye to tail)

Slipper Spring Hanger Installation

Install the rear hanger towards the rear of a 50mm x 50mm angle section
Measure the rear tail and install the front and rear hanger so that 1/2 of the tail is in the centre of the hanger.
Clamp the steel angle to the chassis rail with 56mm u-bolts.
Move the centre hanger to approximately 150mm back of the centre. This position is approximate.
Measure coupling head weight; it must be no lighter than 5% of the ATM.

Kit Contents: 45mm Tandem Slipper Hanger Kit

Important derating factor

Especially relevant, non-loading sharing tandem setups like slipper spring assembles must be de-rated by 20%.

De-rating allows for occasions when most of the trailer weight is on one axle. Excess loading on the axle occurs when one wheel is parked on the gutter.

For example, trailer slipper springs with a rating of 2400kg would be rated on the trailer registration as 1920kg or 20% rather than 2400kg.

Important to note that the hangers be installed 700mm from the centre of the eye to the centre of the rear hanger.

Hangers installed over 700mm centres will cause the rear leaf to jump out under shock loading conditions like deep potholes in the road.

The bolts supplied are 1/2 inch. Most 6mm springs have 1/2 inch ID bushes with 22mm OD.

Finally, hangers installed closer than 700mm centres will cause the spring to lock in the rear hanger and break.

Frequently Asked Questions

What exactly is a 45mm Tandem Slipper Hanger Kit? This kit includes all the essential weld-on frame hangers and high-tensile bolts you need to mount a dual-axle tandem slipper leaf spring setup to your trailer chassis.
Does this kit fit 45mm-wide slipper springs? Yes, this kit is engineered to fit standard 45mm-wide slipper springs, providing the clearance needed for smooth suspension movement without excessive sideways play.
Are the hangers painted or raw steel? They are supplied as raw, weldable structural steel. This lets you achieve clean weld penetration to your trailer frame without burning off toxic paint coatings.
Why is the centre hanger deeper than the outer hangers? The deeper centre hanger houses the rocker-arm mechanism. This design balances the load and allows weight to transfer smoothly between the front and rear axles over bumps.

Installation & Maintenance: Do’s & Don’ts

Proper alignment and secure welding are critical for trailer towing safety. Follow these essential guidelines when installing your 45mm tandem hanger kit:

✅ What to Do

✔️ Do hire a qualified structural welder to ensure deep weld penetration on all chassis mounting points.
✔️ Do measure diagonally between hangers twice to guarantee the axles sit perfectly square to the frame.
✔️ Do use the high-tensile Grade 8.8 bolts provided in the kit to prevent bolt shearing under heavy loads.
✔️ Do paint or cold-galvanise the raw steel hangers immediately after welding to prevent surface rust.

❌ What to Avoid

❌ Don’t over-tighten the keeper bolts; the tail of the slipper spring must be free to slide back and forth.
❌ Don’t weld the hangers while the leaf springs are still fitted, as excessive heat can ruin the spring’s steel temper.
❌ Don’t mix this kit with wider 50mm or 60mm springs, as the incorrect fitment will cause binding or parts damage.
❌ Don’t use standard low-grade hardware store bolts to replace your heavy-duty shackle or rocker bolts.

Additional information

Weight	6 kg
Dimensions	10 × 10 × 10 cm

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.