Trailer Leaf Springs
Trailers and Caravans Leaf Springs
Slipper Spring is the favoured spring for box trailers, and many types of trailers require a spring.
6mm x 45m Slipper Spring Specifications
3 Leaf – 6mm – 45mm Wide – 765mm Long – 400kg Rating
4 Leaf – 6mm – 45mm Wide – 765mm Long – 450kg Rating
5 Leaf – 6mm – 45mm Wide – 765mm Long – 500kg Rating
6 Leaf – 6mm – 45mm Wide – 765mm Long – 600kg Rating
7 Leaf – 6mm – 45mm Wide – 765mm Long – 675kg Rating
9 Leaf – 6mm – 45mm Wide – 765mm Long – 800kg Rating
8mm Slipper Spring Specifications
3 Leaf – 8mm – 45mm Wide – 710mm Long – 425kg Rating
4 Leaf – 8mm – 45mm Wide – 710mm Long – 550kg Rating
5 Leaf – 8mm – 45mm Wide – 710mm Long – 675kg Rating
6 Leaf – 8mm – 45mm Wide – 710mm Long – 750kg Rating
7 Leaf – 8mm – 45mm Wide – 710mm Long – 850kg Rating
Boat and Box trailers use simple suspension systems in single-axle and tandem-axle configurations.
However, tandem axle suspension does not load share, so the spring must be 20% larger in load sharing.
Why?
Axle loadings for slipper suspension are limited to 120% of full load.
For example, with one wheel on the gutter, the other does not touch the ground. As a result, tandem axles do not share the load.