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Automatic lubrication devices

An automatic lubricator is a single-point dispensing unit mounted at a lubrication point, such as a bearing or chain, that delivers a small, continuous amount of lubricant over a set period. The listed example is a disposable type in which gas pressure generated by a gas cell pushes a piston to discharge grease or oil, and the discharge period can be adjusted from 1 to 12 months with a dial. Some products come prefilled with lubricant, while an oil-only empty unit is also available for filling with any oil of choice. Intended for high, hazardous or hard-to-reach locations and equipment with many lubrication points, it reduces missed or excessive lubrication and cuts maintenance effort. Typical applications include bearing housings, electric motors, fans, pumps, conveyors, chains, elevators and escalators.

How to choose Automatic lubrication devices

  1. 1. Select a lubricant suited to the application

    Prefilled lubricants include high-temperature, high-load/extreme-pressure, NSF H1 registered food-machinery grades, and biodegradable types. Grease is generally used for bearings and oil for chains. Mixing with existing lubricants may reduce performance, so confirm the brand and thickener compatibility, and select an empty oil unit if you intend to use your own oil.

  2. 2. Determine capacity from required lubrication volume

    The main capacities are 60 ml and 125 ml. Determine the capacity by multiplying the required lubrication volume for each lubrication point (such as the equipment manufacturer's recommended value) by the desired replacement interval. For the same discharge period, a larger capacity dispenses more lubricant per unit time, so check that it is neither too large nor too small for the size of the lubrication point.

  3. 3. Set the discharge period to match the replacement interval

    The listed example allows the discharge period to be adjusted from 1 to 12 months. Matching it to the periodic inspection interval allows replacement work to be consolidated. Because gas-driven types change discharge speed with ambient temperature, periodically check the remaining lubricant in the transparent container to confirm it is decreasing as set.

  4. 4. Check generated pressure and piping conditions

    The maximum generated pressure of the listed product is 5 bar. Because the pressure is low, installing it at a distance with a hose may prevent discharge due to piping resistance. Direct mounting is the basic approach; when using stiff grease or long piping, check that the passage is not clogged and that back pressure is not high.

  5. 5. Match the thread standard of the lubrication port

    If the mounting thread does not match the standard of the lubrication port (such as a grease nipple mounting hole), an adapter will be required. Confirm the thread standard and size on the equipment side in advance, and for oil use also check whether a check valve is included.

  6. 6. Confirm the operating environment and explosion-proofing requirements

    The ambient temperature range affects discharge stability and lubricant performance, so compare it with the installation site temperature. In hazardous areas such as those with flammable gases, select an ATEX-certified product matching the zone classification (some products are also certified for Zone 0).

This guide was written by AI based on the listed products' documents and specification items. Check each manufacturer's documents before adopting.