SKF Oil Levellers

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SKF Oil Levellers, automatic adjustment for optimal lubricating oil level.


SKF Oil Levellers

SKF LAHD 500 and LAHD 1000 oil levellers are designed to automatically compensate oil evaporation and leakages under running conditions. This helps in maintaining the correct oil level within a bearing housing, gear box, crankcase, or similar oil bath application. The SKF LAHD series optimises machine performance and increases their service life. Furthermore, they enhance the possibility of an accurate visual inspection of the oil level.

Features & benefits
  • Optimally maintained oil level
  • Extended inspection interval
  • Easy visual inspection
  • Compensation for evaporation losses
Typical applications
  • Oil lubricated bearing housings
  • Gear boxes
  • Crankcases
How it works

The SKF Oil Leveller consists of two communicating oil reservoirs. The lower reservoir is in direct contact with the application and hence its oil level is the same as the lubricating oil level inside the application. Through a ventilation tube, the lower reservoir is also 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 contact with each other. However, oil can only flow from the upper to the lower reservoir once the oil level in the lower reservoir goes below the pre-set level, allowing air to flow through the extended neck to the upper reservoir.

Technical Data
Designation LAHD 500 / LAHD 1000
Boundary dimensions – LAHD 500 Ø 91 mm x 290 mm high (3.6 x 11.4 in.)
– LAHD 1000 Ø 122 mm x 290 mm high (4.8 x 11.4 in.)
Reservoir volume – LAHD 500 500 ml (17 US fl. oz)
– LAHD 1000 1 000 ml (34 US fl. oz)
Container material Polycarbonate
Allowed temperature range – 20 to 70 °C (-4 to 158 °F)
Permissible humidity 0 – 100 %
Length of connecting tube 600 mm (23.5 in.)
Connection thread G 1/2
Tube material Polyurethane
O-ring material NBR – 70 Shore
Gaskets NBR – 80 Shore 6 pieces
Other material Aluminum, Bronze, Stainless Steel
Suitable lubricating oil types Mineral and synthetic oils