Ringfeder 50mm Tow Coupling 303 AUS

Allan Davis on 25/05/2026

Ringfeder 50mm tow coupling 303 AUS for drawbar eye trailers
Ringfeder 50mm Tow Coupling 303 AUS - Image 2

Ringfeder 50mm Tow Coupling 303 AUS

$2,453.00

Ringfeder 50mm tow coupling 303 AUS for heavy-duty 50mm drawbar eye trailer applications, with 320kN D-value, manual operation and hinged drawbar trailer suitability.

Part number TC7310G.

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Description

Overview

Ringfeder 50mm tow coupling handles heavy-duty trailer coupling work with 50mm drawbar eyes. The 303 AUS model suits Australian transport applications that need a manual automatic coupling with a high D-value and secure self-closing operation.

Features

  • 50mm automatic trailer coupling for heavy-duty drawbar eye applications.
  • 320kN D-value for demanding transport combinations.
  • Manual downward hand lever operation with self-closing coupling action.
  • For hinged drawbar trailers only, with no static vertical load.

Specifications and Materials

This Ringfeder 50mm tow coupling uses a 160 × 100mm mounting hole pattern and black E-coat finish. It runs with 50mm drawbar eyes and suits hinged drawbar trailer coupling layouts where the drawbar and coupling rating match the job.

Part number: TC7310G.

Use the Ringfeder 303 AUS technical drawing when checking mounting dimensions and drawbar eye movement.

Compatibility and Fitment

Check the drawbar eye size, D-value, mounting pattern, drawbeam setup and vertical load requirements before ordering. This coupling suits 50mm drawbar eye applications and must be matched to hinged drawbar trailer setups.

These cross-references show where this part replaces the part numbers and applications listed. Some installations may need minor changes. 15990007, BPW15990007

Related Parts

Check the related service parts below against the trailer setup before ordering.

Use Part number Part type
Related version TC8006 50mm tow coupling
Wear pad to suit TC7105C Cast wear pad
Replacement component TCKTCK1017 Coupling bolt
Service part BPW15990003 Manual safety device
Service part BPW14991399 Tab washer
Service part BPW9177600 Sealing kit

 

Compliance and Safety

Inspect the coupling bolt, safety device, drawbar eye bush, mounting fasteners and wear surfaces before the vehicle returns to service. Also confirm the securing knob sits in the engaged position after every coupling process.

Keep the coupling bolt and drawbar eye bush clean and lubricated during service. If the coupling bolt, guide bush or wear plate reaches its wear limit, replace the affected parts before further road use.

Trailer Applications

Workshops fit this Ringfeder 50mm tow coupling to heavy transport drawbar trailer combinations using 50mm drawbar eyes. It suits fleet replacement, coupling service and tow coupling upgrades where the trailer setup requires the 303 AUS manual coupling format.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

15990007 BPW15990007

 

Why Choose ICS Trailers

ICS Trailers supplies tow coupling parts for transport operators, trailer workshops and fleets that need heavy vehicle coupling parts matched to the trailer setup. View more Tow Couplings from ICS Trailers

Online prices apply to website orders only. In-store pricing may differ.

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