General Safety and Maintenance Manual: Weekly Inspection 14
Inspect and Lubricate Bearings and
Bushings
Precor uses only the highest quality bearings and linear motion
components, but they must be maintained for a long service life. Each
week, do the following to maintain the bearings and bushings on the
equipment:
• Bronze bushings: Precor recommends using a small amount of
silicone spray lubricant to lubricate the bushings. Spray directly
onto the shaft, and then move the shaft through its complete range
of motion several times. Inspect bushings for excessive wear and
damage. Be careful when using the spray lubricant; it can stain
carpet and clothing. Wipe off any excess lubricant with a rag.
• Nylon bushings: Lubricate the nylon bushings on the guide rods by
applying a light coat of silicone spray lubricant. Spray the silicone
lubricant on a rag and then wipe the rag up and down the shaft.
• Sealed Bearing Pivot Points: These locations are protected from
the outside environment and require no lubrication. While cleaning
the equipment, wipe down the shafts and external bearing surfaces
with a rag to prevent the build up of dust and perspiration.
• Linear Bearings: Case hardened shafts are used in areas that use
linear bearings (refer to Figure 10). The extreme hardness of the
shaft is required to prevent the bearing from wearing a groove in the
shaft. Inspect each end of the hardened shaft to ensure they are
fastened correctly and all bolts are tight.
Wipe down linear rails using a light application of a silicon spray
lubricant to remove dust, hair, and dirt. Polish the shaft using fine
grade steel wool if surface rust or oxidation is present.
Important: Do not use petroleum-based lubricants or motor oil.
If you lubricate the linear rails regularly, then the bearings will
function as designed. Otherwise, the linear rails may corrode, which
can cause the bearing to become clogged and jammed, leading to
the bearing actually gouging the linear rail. Be sure to remove
surface rust and oxidation from the hardened rails immediately.
Figure 10: Shows a typical location of a linear bearing in its housing
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