Description
Frequently Asked Questions
What size is this tow ball?
The Holroyd 70 mm Tow Ball is designed for larger, heavy-duty towing systems and couplings that require a 70 mm ball.What is the maximum towing capacity?
The 70 mm model is rated up to 4,500 kg, depending on the rating of your tow bar and vehicle setup.What material is used?
It’s made from high-tensile 4140 steel, chosen for its exceptional strength and impact resistance.Which finish options are available?
You can choose between matte black (for high corrosion resistance and low maintenance) or chrome-plated (for a polished appearance).What vehicles or trailers is it suited for?
Ideal for large caravans, gooseneck trailers, horse floats, boat trailers, and industrial equipment up to the 4,500 kg rating.Can it replace a 50 mm tow ball?
No. 70 mm tow balls require a matching 70 mm coupling. Using mismatched components is unsafe and not compliant with Australian road standards.Does it comply with Australian towing regulations?
Yes. Holroyd tow balls are engineered and tested to comply with Australian towing and coupling standards.Is it suitable for marine or coastal use?
Yes — the matte black finish provides excellent corrosion resistance, making it ideal for marine or off-road conditions.How do I maintain the tow ball?
Keep the ball surface clean and lightly lubricated. Inspect regularly for signs of rust, cracks, or wear on the coupling surface.What warranty is included?
The 70 mm tow ball is backed by a 10 year manufacturer replacement warranty for material or workmanship defects.
Tips & Tricks
Pre-Installation Planning
Confirm your vehicle’s tow bar and the trailer coupling are rated for 4,500 kg and specifically designed for a 70 mm ball.
Ensure all mounting bolts, washers, and flanges are in good condition.
Gather necessary tools: torque wrench, spanners, and anti-seize or corrosion-resistant grease.
Choose finish (matte black or chrome) based on your operating environment and style preference.
Step-by-Step Installation
Remove the existing tow ball if fitted, and clean the flange surface to remove debris and corrosion.
Position the new Holroyd 70 mm Tow Ball on the tow bar flange and align mounting holes.
Insert and hand-tighten the mounting bolts.
Apply anti-seize or thread-locker to threads as recommended.
Torque the bolts to the vehicle or tow bar manufacturer’s specifications.
Attach the trailer coupling and check that it seats fully and locks securely onto the 70 mm ball.
Verify there’s no excessive movement or play when locked.
After initial towing, re-check bolt torque and inspect for any settling or loosening.
Maintenance & Safety Tips
Clean the ball regularly with mild detergent and a soft cloth — avoid abrasives.
Apply a thin layer of grease or coupling lubricant before towing to prevent wear.
Inspect for any signs of wear, rust, or pitting — replace if damaged.
Ensure bolts remain torqued to spec, especially after heavy towing or off-road use.
Replace immediately if the tow ball shows flat spots, cracks, or distortion.
Store under cover when not in use to prolong the coating life.
Product Specifications
| Specification | Value / Description |
|---|---|
| Model | Holroyd 70 mm Tow Ball |
| Material | High tensile 4140 solid steel |
| Finish Options | Matte Black / Chrome Plated |
| Ball Diameter | 70 mm |
| Towing Capacity | Up to 4,500 kg (depending on tow bar and vehicle rating) |
| Mount Type | Standard tow bar flange mount |
| Surface Treatment | Corrosion-resistant coating for long-term durability |
| Weight | Approx. 1.4 kg |
| Compliance | Meets Australian towing and coupling standards |
| Applications | Heavy-duty towing – industrial, caravan, marine, and agricultural |
| Maintenance | Clean regularly; apply protective lubricant before use |
| Country of Manufacture | Australia |
| Warranty | 10 year manufacturer replacement warranty |
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