Glossary › H
- Hamburg tilt cover
This type of tilt body was developed in the Hamburg dock area in the 1930s. It has a slightly sloping roof on 5 longitudinal beams with numerous cross members. This design was the basis for the current standard tilt body that usually has a flat roof. Less common since the advent of modern sliding roof systems.
- Hand brake
A hand operated braking system to secure the trailer when at rest. Usually operates on one axle only.
- Hand pump
Various hydraulic systems use hand pumps e.g. lightweight tippers and demountable body systems.
- Hand release valve
Hand-hydraulic systems have many uses e.g. ramps on low loaders, locking cylinders, etc. In particular the system is used for lightweight tipping bodies.
- Hanging deck
Animal transporters with multiple load decks may have a cable or chain suspended deck for small animals e.g. piglets, goats, etc which is hung below a main deck.
- Hanging meat transport
Animal carcasses are transported hanging from a cargo track under a vehicle roof.
Trailer for roll-on containers from the manufacturer Hüffermann.
- Hard chromed
Surface finish of garment carrying rails and tipping cylinders.
- Hard rubber damping
Used on the eyes of parabolic suspension and removes need for lubrication of wearing components.
- Hard top container
Standard containers with removable solid roof for loading from above.
- Hardox sheet metal
Sheet metal with high Brinell hardness used for heavy rock transporters.
- Hasp length
The hose connection system on tank vehicles e.g. petrol or oil tankers.
A special stainless steel alloy which is used for particularly aggressive products e.g. in tankers.
Maintenance free axle system from Daimler Chrysler/Henrickson.
- Head Unit
Term used for wheel head.
- Heating system
Heating may be achieved by hot water or solar power e.g. for tankers carrying temperature sensitive cargo or box bodies for flower transport.
- Heavy duty
General term used for stronger than standard specification e.g. semi-trailers which are designed for use on poor road surfaces.
- Heavy duty turntables
Heavy-duty turntables for long material vehicles.
Leading European manufacturer of lighting equipment for trailers.
- Hinged towing eyes
Construction trailers may be fitted with hinged towing equipment that comprises both a 50mm eye and a 40mm eye which allows the trailer to be universally used with both heavy construction and normal trucks.
- Hook coupling
Military vehicles have an international trailer coupling which is different from the civilian standard. The military system (also known as a Nato coupling) comprises a hook that engages the trailer towing eye. This coupling system performs better off-road.
- Hook height
The standard height of the hook on lifting hook vehicles. The DIN standard height is 1570mm.
- Hook lifting system
The hook lifting system is used with demountable containers that are pulled on or pushed off the vehicle chassis on rollers.
- Hose pack
Telescopic vehicles have a hose pack that allows electric cables and hoses to be extended with the trailer.
- Hose storage
Storage equipment (hooks or closed containers) for tanker discharge hoses.
- Hot galvanised
Zinc coating of steel for corrosion prevention. Used extensively for bodybuilding components.
- House colours
The colours used for a company livery.
- Hydraulic steering
Hydraulic steering of one or more axles – usually used on special low loaders and semi-trailers.