JOST manufactures coupling and support equipment for commercial trucks and trailers. Its core product range includes fifth wheels, trailer landing gear, kingpins, turntables, and related components.
Truck Equipment Atlas covers JOST equipment to help readers compare coupling designs, understand application differences, and explore the components connecting tractors and semitrailers.
History and Background
JOST began in 1952 in Neu-Isenburg, near Frankfurt, Germany, manufacturing ball-bearing turntables. Fifth-wheel couplings joined its product range in 1956, followed by international expansion.
The company developed from a component manufacturer into a global supplier of commercial-vehicle systems. Fifth wheels and landing gear remain central to the JOST brand, alongside container equipment and trailer axle systems in international markets.
What JOST Manufactures and Supplies
- Commercial-truck fifth-wheel couplings
- Lightweight and low-lube fifth wheels
- Terminal-tractor and yard-spotter fifth wheels
- Fifth-wheel sliders and mounting equipment
- Trailer landing gear and support components
- Trailer kingpins and ball-bearing turntables
- Coupling-monitoring and lubrication systems
- Replacement parts and service components
JOST Products on Truck Equipment Atlas
Highway and Vocational Fifth Wheels
- JOST JSK37U Fifth Wheel — A cast fifth wheel for commercial highway and vocational tractor applications.
- JOST JSK36N Lightweight Fifth Wheel — A lightweight stamped-steel fifth wheel for standard highway tractors.
- JOST JSK3CN Ultralight Fifth Wheel — A weight-saving fifth wheel combining fusion-welded steel with a carbon-fiber structural beam.
Terminal-Tractor and Yard Couplings
- JOST JSK37Y Terminal Tractor Fifth Wheel — A specialized fifth wheel for frequent trailer coupling and uncoupling in freight yards, ports, and distribution facilities.
Technology and Product Development
JOST develops products around coupling reliability, weight reduction, serviceability, and operator convenience. Different fifth-wheel families address highway payload requirements, vocational service, and the repeated coupling cycles encountered by terminal tractors.
The JSK3CNWL uses a fusion-welded steel top plate with a carbon-fiber beam to reduce weight. JOST also offers Loc-Light, which combines two-sensor coupling monitoring with LED throat illumination.
Within its international product range, JOST offers integrated lubrication technology such as LubeTronic and systems that automate or monitor truck-and-trailer operations. Availability and configuration vary by product and market.
Company and Location Information
JOST’s global headquarters are in Neu-Isenburg, Germany. JOST International serves the United States, Canada, and Mexico, with U.S. operations in Grand Haven, Michigan, and Greeneville, Tennessee.
JOST International identifies Grand Haven with its landing-gear and kingpin product lines and Greeneville with its fifth-wheel product line. The wider JOST group includes the JOST, ROCKINGER, TRIDEC, Quicke, and Hyva product brands.
Related Brands and Equipment
- Fontaine Fifth Wheel
- SAF-Holland
- Commercial Truck Fifth Wheels
- Fifth Wheel Sliders and Mounting Systems
- Brands and Manufacturers