45mm x 765mm Slipper Spring

$59.00 - $149.00

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6mm slipper spring

6mm slipper spring 45mm wide is suitable for metropolitan travel while 60mm springs are most suited to high-speed travel under heavier loads.

This style of spring has the traditional eye and a tail that slides in a keeper or hanger welded to the chassis of the trailer.

45mm Spring Rating:

  • 3 Leaf – 300kg
  • 4 Leaf – 450kg
  • 5 Leaf – 500kg
  • 6 Leaf – 600kg
  • 7 Leaf – 675kg
  • 9 Leaf – 800kg

6mm Slipper Spring Specifications

  • 765mm Eye to Tail.
  • 6mm Leaf Thickness
  • 1/2 inch x 7/8 inch x 45mm bush.
  • Free Camber 150mm
  • Eye to Center Bolt 330mm
  • Hanger Centers 700mm

45mm wide boat springs, 6mm leaf thickness are suitable for metropolitan travel.

45mm x 6mm slipper springs trailer springs are suitable for metropolitan travel. Spring twisting can occur due to a combination of load centre of gravity, weight, cornering and shock loading caused by badly maintained roads.

Slipper Spring Derating

Slipper springs are rated at 120% of full load for all single, tandem and tri-axle sets.

For example, tandem trailer weighing 2,000kg x 120@ = 2,400kg

Axles, springs, and associated equipment must rate a total of 2,400kg

Why de-rate trailer slipper springs?

  • Normally it is common practice to use 2 x 40mm Square axles on a 2000kg trailer? Wrong.
  • 6mm slipper springs do not load share, they do not transfer load across both axles.
  • For example, each wheel in the above example has a loading of 2,000kg / 4 wheels or 500kg per wheel.
  • Mount a gutter using only one wheel and you will find the wheel on the same side is lifted off the ground.

The wheel OFF the ground is carrying zero kg.

The wheel on the ground is carrying 1,000kg, whilst the other two wheels on the ground are carrying 1,000kg.

The axle with wheels on the ground is carrying 1,500kg.

If you want your trailer to have a nice smooth ride try shackle or even better, rocker roller springs.

I noticed the shock loading on the trailer from roadside potholes was not as severe on the trailer.

Although the trailer slipper springs are a good low-budget solution, however, if your budget allows, consider buying shackle or rocker roller springs.

Purchase your slipper springs below:

Purchase your 45mm shackle springs below:

Here is an excellent article on “Why do springs break”.

Additional information

Dimensions93 × 15 × 10 cm
Slipper Springs

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