Hydraulic Oils

Hydraulic oils – operating fluid for the tail lift hydraulic system

Hydraulic oils are the operating fluid that handles power transmission, lubrication and heat dissipation throughout the entire hydraulic circuit of a tail lift. They circulate between tank, pump, valves and cylinders and, through their properties, decisively determine response behaviour, wear protection and the service life of the components. At SULEJ Ladebordwand you will find hydraulic oils in different viscosity and quality grades, matched to the installed power pack and the typical operating temperatures in distribution traffic.

HLP oils and viscosity grades at a glance

Tail lifts typically use HLP oils to DIN 51524 part 2, supplemented by wear-reducing and ageing-resistant additives. The common viscosity grades ISO VG 32, 46 and 68 cover the majority of applications: ISO VG 32 is preferred at low outside temperatures, ISO VG 46 serves as a universal all-weather solution in Central European distribution traffic and ISO VG 68 is used at high continuous temperatures or with heavy loads. In addition to classic mineral oils, biodegradable and fully synthetic variants are available, offering an extended temperature range and improved flow behaviour in cold conditions.

Oil change and condition monitoring in practice

During ongoing operation, the oil changes through water ingress, particles and thermal ageing. Discolouration, a milky-cloudy appearance or a clearly different smell are indications that a change is due. With every oil change, suction and pressure filters should be replaced as well, the tank cleaned and the connections checked for leak-tightness. Grade purity matters: mineral and synthetic oils must not be mixed arbitrarily, since additives and seal compatibility differ from one another.

Benefits at a glance

• HLP quality to DIN 51524 for reliable wear protection
• Viscosity grades ISO VG 32, 46 and 68 for different climate zones and loads
• Mineral and synthetic variants for extended temperature ranges
• Matched to common power pack configurations on the market

The right hydraulic oil in the appropriate viscosity noticeably reduces wear and stabilises the lifting behaviour of the tail lift over the entire service life.