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The Lubricating Pinion shows how the grease exits only through the tooth that is meshed with the mating gear. In this case it is the tooth in the 12 o’clock position. As each tooth rotates through the 12 o’clock position, only then will they receive grease.

This unique design applies grease to the meshing teeth only and keeps excessive grease from accumulating in other areas.

In the picture above, the tooth that is at the 9 o’clock position was initially in the 12 o’clock position and is NOT receiving grease. The Lubricating Pinion was rotated counterclockwise slowly. 

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During this application the Lubricating Pinion was connected to a grease gun to supply the grease. The grease is exiting the 4 slots in each tooth as it rotates into the 12 o’clock position.

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The internal porting keeps grease from exiting the teeth until they rotate into position.

Sizing a Lubricating Pinion Greaser to your gears

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The above picture shows two different size Lubricating pinions resting on a 24” diameter gear. In order to spec a Lubricating Pinion, the Module and Width of the mating gear must be known. If the Module can’t be found, use the pitch diameter and # of teeth to calculate it.

Module: This may be on the gear fabrication drawing, but most likely it will have to be calculated from the pitch diameter and number of teeth.

Module = pitch dia / # of teeth

Pitch Diameter:  This dimension is on most gear fabrication drawings.

Number of total teeth on mating gear: Simply the total number of teeth around the circumference of the gear.

Width of mating gear: Try to match the width of the gear with the ‘Height’ dimension of the pinion lubricator (dimension ‘H’ in the service page). Be careful of using a pinion lubricator that is wider than the mating gear, grease overflow could occur.

Categories: Lubrication

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