Couplemate Express Trailer Parts

Tow Ball Collar 10t

SKU: TOWBALL-10T-C Category: Tags: , Brand:

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$178.00 Inc.GST

Brand: Couplemate

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Tow Ball Mounting Collar to secure 10t tow balls.

Install a tow ball collar on plates smaller than the 40mm plate. Help prevent the mounting plate from bending under stress loads.

10t ball collar solves the problem of mounting a 10t tow ball on a ute tray back. The customer felt his existing installation needed strength as it would not withstand the loads asserted by a 10t gooseneck coupling.

It is ideal when your bedding plate or tow ball platform requires strengthening.

Bed plates used in gooseneck tow balls can be as thin as 10mm, instead of the standard 35mm.

A collar significantly strengthens the Gooseneck mounting plate area.

This collar is used on plates smaller than the 40mm plate, which is used to secure the tow ball into position on a utility body.

As a result, this helps prevent the mounting plate from bending or cracking under stress loads.

Collar Specifications

  • Diameter – 120mm
  • Thickness – 36mm
  • Hole size – 50.9mm
  • Steel grade – K1020.

Towing collars are not designed for use on Hayman Reese tow bars.

Associated Parts

  • 1 x High-Tensile Tow Ball Nut (1-1/4″ UNF)
  • 1 x Zinc Flat Washer (5mm thick)
  • 1 x M10 Split Pin (100mm length)
  • 3-inch Tow Ball, CTA-047277
  • 10t Gooseneck AutoLock Coupling, CTA-047029

Installation instructions

  • Lock the castellated nut into position.
  • Drill a hole.
  • Insert the split pin into the hole.
  • Bend the split pin back over the nut.
  • The purpose of the split pin is to ensure zero movements under all driving conditions.

Further, machined flat spots on either side of the shoulder allow the ball to be grabbed with a spanner to assist in locking the castellated nut.

10t Ball Dimensions

  • Length – 190mm
  • Thread length – 48mm
  • Total shank – 87.3mm.
  • Thread diameter – 44.4mm
  • Shank diameter – 50.6mm

Purchase associated equipment here

Trailer Parts News Articles

More towballs are available below

Frequently Asked Questions: 10t Gooseneck Tow Ball Collar

What is a 10t Tow Ball Collar, and what is its primary purpose?
A 10t Tow Ball Collar is a heavy-duty reinforcing sleeve designed specifically for gooseneck couplings installed in the bed of commercial or heavy-duty tow vehicles. Its primary purpose is to reinforce the tow ball base, reduce stress concentration, eliminate coupling play, and safely distribute up to 10 tonnes of towing capacity.
Will this collar fit standard 50mm or 70mm tow balls?
This specific collar is engineered for heavy-duty gooseneck applications, which typically utilise a 2-5/16 inch or 3-inch gooseneck ball, or a heavy-duty 70mm ball rated for high capacities. Please verify the exact shank and ball diameter of your coupling system to ensure a precise, snug fit.
Can I install the 10t collar myself, or do I need a professional?
While the collar’s physical placement is straightforward, gooseneck systems operating under 10-tonne loads require precise torque specifications and safety compliance. We recommend having a qualified heavy-vehicle mechanic or certified towbar installer inspect or perform the installation to ensure compliance with local towing regulations.
What maintenance does the tow ball collar require?
Regular maintenance is critical for heavy-duty setups. Regularly clear away old grease, grit, and debris from the collar and ball interface. Inspect the collar for signs of wear, distortion, or hairline cracks before every major haul, and apply a high-quality, heavy-duty hitch grease to minimise friction.
Does this collar increase my vehicle’s overall towing capacity?
No. A tow ball collar reinforces the coupling connection and reduces mechanical wear, but it does not increase the legal towing capacity of your vehicle, hitch receiver, or chassis. Always follow the lowest-rated component in your entire towing configuration.

 

Additional information

Weight 6 kg
Dimensions 15 × 15 × 5 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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