Description

Overview

Drake 50mm Drop In King Pin suits heavy trailer fifth wheel couplings where a drop-in style kingpin is required for servicing or replacement work. Unlike weld-in styles, this design allows removal from the skid plate assembly once the correct boss and retention method are in place. As a result, you can renew a worn kingpin without cutting and rewelding the skid plate.

Features

The drop-in format supports scheduled maintenance because you can remove and refit the kingpin in a controlled way. The 50mm (2 inch) kingpin size matches common fifth wheel coupling geometry used across Australian trailer fleets. The 139kN D rating helps you confirm the coupling class for the intended combination, and the registered CRN reference supports compliance checks during repairs.

• Drop-in kingpin style for serviceable skid plate assemblies
• 50mm (2 inch) kingpin size for fifth wheel couplings
• D rating 139kN for coupling selection and verification
• CRN 33052 for traceability in regulated applications

Specifications and Materials

Part number: TT5400.
This Drake 50mm Drop In King Pin is specified with a 50mm kingpin size, a 139kN D rating, and CRN 33052 for identification. Drop-in kingpins rely on a compatible boss and retention arrangement, so confirm the boss type and skid plate design before ordering. Refer to Australian Design Rule 62 mechanical connections overview for guidance on compatible coupling components

Compatibility and Fitment

This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown. Some changes in installation may be required. 032738
Check fifth wheel coupling condition, mounting security, and lubrication practices before returning the trailer to service. Inspect the skid plate and boss for wear or deformation because those surfaces control kingpin location under load.

Compliance and Safety

Although a kingpin looks simple, it operates under high cyclic loads, so safe installation matters. Follow your workshop procedures for coupling inspection, crack checks, and fastener control. Confirm the trailer’s coupling components meet the applicable rating and regulatory requirements for your operating region.

Trailer Applications

Drake 50mm Drop In King Pin typically suits semi-trailers and dog trailers that use a fifth wheel turntable with a 50mm coupling interface. For example, it can support fleet maintenance where kingpins see frequent coupling cycles in linehaul or distribution work. Drop-in assemblies can also be useful when downtime must stay low and repeatable replacement is preferred.

Cross-reference and Suitability

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

Use the list above to match known references, then verify the boss and skid plate arrangement on the trailer.

Why Choose ICS Trailers

ICS Trailers helps you choose the right coupling components with practical advice and fast supply for workshop repairs. We also focus on heavy trailer parts that suit real Australian operating conditions. Browse Turntables at ICS Trailers to compare fifth wheel parts and turntable components