Tow Balls

Tow Balls are manufactured in all sizes from 50mm to 3″.

Tow Balls are designed and manufactured to connect trailers of different weights to the tow vehicle. The most common tow ball size in Australia is 50mm.

The Australian Standard is AS 4177.2—2004. Publishing this standard is forbidden; however, the maximum force applied is 85kN for at least 10 sec.

Tow balls are manufactured in various sizes depending on lo loading, carrying capacity, D-Value and V-Value.

• 50mm Ball – 7/8″ Dia Shank – 62mm Long – 3500kg Capacity
• 50mm Ball – 1″ Dia Shank – 62mm Long – 3500kg Capacity
• 2″ Ball – 1″ Shank – 62mm Long – 3500kg Capacity
• 50mm Ball – 32mm Dia Shank – 62mm Long – 3500kg Capacity – Suit Pintle Hook
• 50mm Ball – 7/8″ Dia Shank – 25mm high shoulder – 62mm Long – 3500kg Capacity
• 2″ Ball – 1″ Shank – 62mm Long – 3500kg Capacity
• 50mm Ball – 25.4mm Dia Shank – 62mm Long – 3500kg city – Suit Pintle Hook CM532
• 2 5/16″ Ball – 1 1/4″ Dia Shank – 3500kg Capacity
• 70mm Ball – 32mm Dia Shank – 25mm Shoulder – 70mm Shank – 4500kg capacity
• 3″ Ball – 50mm Dia Shank – 39mm Unthreaded – 15mm Shoulder – 10,000kg capacity

ADR Approved by Law is required for sizes over 3.5t, i.e. 70mm and 75mm.

As a result of growing demand, Couplemate commenced the manufacture of all ball sizes. Our largest truck ball size is 3″ for our 10t gooseneck coupling.

We also found that many Chinese balls do not pass the Australian Standard, AS4177.2. Therefore, compliance standards are not met, and strict penalties and loss of reputation for offending companies are costly.

Further, to ensure compliance with the regulations, Couplemate manufacturers and tests its towing equipment.

Finally, if you need us to manufacture custom towing appliances, call us on 07 33483822. We also stock a tow ball collar for 10t couplings