SKF LAHD 1000, Instructions For Use Manual, Page: 6 / 56

4 SKF LAHD 500-1000
1. Application
The SKF Oil levellers, type LAHD, are designed for automatic adjustment of the optimal
oil lubrication level within a bearing housing, gearbox, crankcase or similar oil bath
application. It effectively solves the problem of adjusting the correct oil level during running
conditions rather than during standstill.
Furthermore, it will automatically compensate for oil leakage and offers the possibility for
visual inspection of the oil level. The oil leveller will not compensate if the oil level is too
high.
2. Description
The oil leveller basically consists of two communicating oil reservoirs, one on top of the
other. The lower reservoir is in direct contact with the application and hence its oil level
is the same as the oil level inside the application. Through a ventilation system the lower
reservoir is in direct contact with the ambient air.
The upper reservoir is an airtight container storing replacement oil.
Through its extended neck, which dips into the oil of the lower reservoir, the two reservoirs
are in direct connection with each other. However oil can onl
y flow from the upper to
the lower reservoir once the oil level in the lower reservoir goes below the preset level,
allowing air to flow through the extended neck to the upper reservoir.
Oil inlet
Upper cover
Upper reservoir
Spring loaded valve
Set of gaskets
Extended neck
Lower reservoir
Oil level
Fixation nut
Magnetic, drainage plug
Assembly drawing oil leveller