The PS13D Single Leaf Parabolic Trailer Spring provides lightweight, progressive suspension for boat, jet ski, box, utility and general-purpose trailers. Manufactured as a single tapered parabolic leaf, it measures 45mm wide with a maximum 13mm thickness and is rated at 600kg per pair. The spring has a Dacromet corrosion-resistant finish, making it particularly suitable for boat trailers and other marine applications.
Trailer Springs
Single Leaf Parabolic Trailer Spring Dacromet – 600kg Pair
SKU: V-92340
$59.40
Key benefits
Key Benefits
- Single-leaf parabolic spring
- 600kg capacity per pair
- Nominally 300kg per individual spring
- 13mm (0.51") maximum spring thickness
- 45mm (1.77") wide
- 755mm (29.72") spring dimension
- 370mm (14.57") eye to centre bolt
- 150mm (5.91") free camber
- Progressive parabolic spring action
- Lightweight alternative to conventional multi-leaf spring packs
- Dacromet corrosion-resistant finish
- Well suited to marine trailer applications.
Advantages of a Parabolic Spring
- Unlike a conventional spring pack containing several constant-thickness leaves, the PS13D uses one tapered parabolic leaf.
- This design can provide
- Reduced spring weight
- No friction between multiple spring leaves
- Progressive spring flex
- Smoother suspension movement on a correctly matched trailer
- Fewer surfaces between leaves where moisture and debris can accumulate
- Simple visual inspection of the primary load-carrying spring
Suitable Applications
- Boat trailers
- Jet ski trailers
- Small box trailers
- Utility trailers
- Light general-purpose trailers
- Single-axle trailer suspension
- The Dacromet finish provides additional corrosion resistance for boat trailers and other applications exposed to moisture.
Signs the Parabolic Spring Needs Replacing
- Replace or thoroughly inspect the PS13D if there is
- Cracking anywhere along the single leaf
- Permanent sagging or flattening
- Significant corrosion or deep pitting
- Distortion around the spring eye
- Excessively worn eye bush
- Damaged or loose centre bolt
- Visible deformation around the axle mounting area
- Uneven trailer ride height
- Spring misalignment
- Abnormal tyre wear associated with suspension or axle alignment
- Because the PS13D relies on one primary load-carrying leaf, cracks or significant structural damage should be treated seriously.
Shipping
Ships Australia-wide