Though simple in design, single-point spring-powered lubricators are very effective at delivering an “on-demand” amount of grease to a connected bearing. By using different springs, users are able to estimate the time it will take to run the unit to empty. The on-demand technology makes it impossible to predict the exact date, but the clear reservoirs make it easy to visually assess the lubricant level at any time. Once the reservoir is filled and the unit is connected to a bearing, the SPL uses Venturi action to discharge lubricant only when the bearing is in motion (1-5 psi). Lubricant will not create a messy pool on the floor, nor will it damage bearing seals. The lubricant discharge is immediate when the vacuum is created from the bearing.
Environmentally-minded manufacturers will appreciate the refillable feature of these SPLs. Since the unit can remain mounted on a bearing, mere pennies of grease per day top off the reservoir. Any grease can be used in these units, allowing grease used in other applications on the plant floor to be used.

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