Lubrication and dust prevention of linear bearings

Lubrication and dust prevention of Linear Bearings

The bearings are coated with anti rust oil at the factory,

and lubricants need to be added during use. The noise of grease lubrication is relatively low. 

Commonly used are No. 2 lithium grease and low noise bearing grease. Before filling, use kerosene,

gasoline, or other organic solvents to remove the rust preventive oil. After drying, apply it 

(directly filling the grease will cause rapid loss of grease), and the filling amount is one-third of the gap of the retainer.

Grease lubrication does not require the removal of rust preventive oil. 15 # to 100 # lubricating oil 

is used according to the working temperature. Low viscosity oil is used for low working temperatures, 

often including turbine oil, mechanical oil, and spindle oil. Unsealed bearings can drop oil onto the shaft,

while sealed bearings need to add oil to the bearing.For some workplaces that do not allow oil (grease), 

first remove the rust preventive oil, dry it, and then spray some commercially available molybdenum disulfide 

spray or other friction reducing lubricating materials on each row of steel balls. 

After drying again, they can be used. Sealed bearings should avoid friction between the sealing ring and the shaft, 

causing the sealing ring lip to squeeze into the bearing, causing unexpected damage to the bearing.

Iron filings can greatly reduce the lifespan of bearings, and dust and dirt can block the ball path of the retainer,

preventing the steel ball from rotating, causing damage to the retainer and the steel ball to collapse. 

Sealed bearings can be used in general workplaces with dust, 

such as woodworking machinery, casting machinery, and other dusty environments. 

Please add additional seals at both ends of the bearings to prevent dust from entering and reduce grease loss.