7 Leaf Offset Rocker Roller 3000kg Spring Kit – Galvanised
Price
$781.00 Inc.GST
Shipping
7 Leaf Galvanised Rocker Roller Springs are the Best Solution for Heavy Boat Trailers
7 Leaf Galvanised Rocker Roller Springs and accessories are 60mm wide, durable tandem springs for the long haul, suitable for boat trailers.
Important: These springs, weighing up to 100 kg, will be delivered on a pallet. If you do not have a forklift, it is wise to deliver them to a commercial address where they can be forked onto your trailer.
Below is an image of perfectly installed rocker roller springs. Notice the hangers are stretched as far as possible so the loop is on the back of the holder.
Please note: The image contains one side. The price includes 2 sides or one complete set for a tandem trailer.
There is a choice of Dacroment or Galvanised Springs; this choice is yours. Why choose galvanised springs?
- The rating of a Galvanised spring is calculated by depressing the spring camber after the galvanising process.
- Dacromet springs can be scratched and rusty as a result of an accident. Dacroment is a sprayed coating.
- Galvanised springs are not prone to scratching from sticks and stones.
- The hot dip galvanising process alters the surface area of the spring, making it more robust to corrosion.
Great article on spring choices here.
Dacromet vs. Galvanised Springs
Hot galvanizing has better corrosion resistance in the outdoor atmosphere. In addition, the coating has a thick, rough appearance but good adhesion; the surface treatment can resist high temperatures. Dacromet coating has a thin, bright appearance, but the surface treatment can not resist high temperatures.
Specifications
- 60mm x 7mm
- Eye to Eye length 687mm
- Free Camber 117mm
- Shackle Bolt Diameter 16mm
- Main Rocker Shackle Bolt 18mm
- Bush Dimensions 16mm x 22mm x 60mm
Key Features
- The listed price is two complete sides of galvanised rocker roller springs to suit 4 wheels.
- Hot-dip galvanising of the highest quality.
- They are tested and rated after galvanising.
- Steel roller bushes.
- Heavy Duty.
- Zinc Plated Hangers.
- Leaves positioned to equalise load and shock loading events.
- Suit boat trailers.
Boat galvanised rocker roller springs are 60mm wide, suitable for tandem axles and one of the best investments for your suspension system.
How so? Well, 60mm springs twist less, are more robust, and withstand shock-loading events like potholes, railway lines, cattle grids and corrugations, to name a few.
If you are considering 45mm springs and a cheaper suspension system, consider whether your trailer will be susceptible to harsh conditions or be a run-around-town trailer.
The kit includes everything in the photo x 2. The springs and centre rocker are galvanised, whereas the hangers are zinc-plated.
A Tandem setup with 60mm wide springs provides a ride between air and standard rocker suspensions. It is robust for the long haul and suitable for horse floats, livestock, and other trailers requiring a softer ride.
Heavier loads will require light truck tyres only to be used due to the higher tyre rating.
Due to the weight of this order, it is a good idea to have springs delivered to your workplace or commercial premises.
You will receive 3 or 5 boxes, depending on the weight. Total weight can be as high as 120kg.
U Bolts
The installation of U Bolts may be more science than you think.
- Semi-tighten the nylocks.
- The next important step is the correct wheel alignment.
- Put a straight edge across the outside of the tandem wheelset. The straight edge should touch the wheels in 4 places.
- Tap axles until the straight edge indicates the wheels are straight.
- Tighten nylocks, but do not bend the fish plate.
- Important: re-tighten nylocks after 300 kilometres. You will find a min of 1/4 turn on each nylock.
- Why? Mild steel will stretch after the initial installation. After a re-tightening, there will be no more stretching under normal loads.
Galvanised Rocker Roller Spring Ratings
- 5 Leaf – 2000kg on 14″ Wheels
- 6 Leaf – 2500kg on 14″ Wheels
- 7 Leaf – 3000kg on 14″ Wheels
- 6 Leaf – 2500kg on 16″ Wheels
- 7 Leaf – 3000kg on 16″ Wheels
- 8 Leaf – 3500kg on 16″ wheels
- 9 Leaf – 4000kg on 16″ Wheels
Galvanised Rocker Roller Springs can vary from 1mm to 5mm. The best installation method is as follows:
- Weld the Center bracket into position, connect the centre rocker, and attach springs to the centre rocker.
- Install front and back spring hanger brackets onto the springs.
- Stretch the front spring as far as it will go and tack it onto your chassis rail.
- Stretch the back spring as far as it will go and tack-weld onto your frame.
Wrong hanger locations cause spring problems
Similar Tandem Springs and parts are located below
Additional information
| Weight | 80 kg |
|---|---|
| Dimensions | 100 × 60 × 30 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.
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