King Pins
The king pin is a component of the coupling between the semi-trailer and the tractor unit.

Different designs make it possible to install king pins onto a trailer quite easily. JOST king pins satisfy the most stringent safety requirements. They are produced from high-quality, coated, forged blanks which are tested for the complete absence of cracks. Exchanging or converting our king pins is both quick and easy.

The king pins can be replaced or converted quickly and easily.

National regulations (in Germany §§19, 20, 21 of the “StVZO” Motor Vehicle Safety Standards) and JOST mounting and operating instructions must be observed for the installation, conversion and replacement of king pins.

Product Overview
2” king pins for use with 2” fifth wheel couplings as per Directive 94/20/EC, ECE R55 as well as DIN 74081. 3 1/2” king pins for use with 3 1/2” fifth wheel couplings as per DIN 74084 and ISO 3842.

All king pins are suitable for use in self-steering axle systems.

Design


D value (kN) King pin D Series
152,0 2" KZ 1108-1112
260,0 3 1/2" KZ 1116


Design


D value (kN) King pin D Series
152,0 2" KZ 2816
162,0 2" KZ 1008-1012
170,0 2" KZ 1516
162,0 3 1/2" KZ 1410-1412
320,0 3 1/2" KZ 1016
200,0 3 1/2" KZ 1416


Design


D value (kN) King pin D Series
105,0 2" KZ 1312
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Design / Features
Pins for retention plates with cone-shaped locating hole (flange).
Pins for dish-shaped retention plates (plate).
The pin is bolted to the retention plate and is easy to replace from underneath. 2” and 3 1/2” pins can be interchanged on some types.

Pins without a retention plate. The pin is bolted to the top plate.

All the designs satisfy the requirements of the currently valid standards:
2” king pins (ψ D = 2” ): dimensions as per Directive 94/20/EC – Class H50, DIN 74080 and ISO 337.
3 1/2” king pins (ψ D = 3 1/2” ): dimensions as per DIN 74083 and ISO 4086

The retention plate is welded to the skid plate. The relevant permitted load (D value) depends on the type of king pin and the skid plate thickness (A) in use and its bracing. Therefore, JOST installation instructions must be complied with.


All the designs satisfy the requirements of the currently valid standards:
2” king pins (ψ D = 2” ): dimensions as per Directive 94/20/EC – Class H50, DIN 74080 and ISO 337.
3 1/2” king pins (ψ D = 3 1/2” ): dimensions as per DIN 74083 and ISO 4086

The retention plate is welded to the skid plate. The relevant permitted load (D value) depends on the type of king pin and the skid plate thickness (A) in use and its bracing. Therefore, JOST installation instructions must be complied with.

Technical Specifications
  Block Type Kingpin   Flange Type Kingpin
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