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Bearing Lubrication Selection for PKB Bearings

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Pacamor Kubar Bearings - PKB

Bearing lubrication is an essential element of bearing selection. Proper lubricant can reduce friction, prevent bearing wear, protect bearing surfaces from corrosion, and carry away excess heat from bearing operation. PACAMOR KUBAR BEARINGS (PKB) selects only bearing approved and tested oils and greases for our variety of lubricant options. Bearings operate on a very thin film of lubricant which must be maintained, or replaced, to ensure that maximum bearing life is achieved. Proper selection, application, and maintenance are vital in maximizing bearing life. Using the proper lubrication in the bearing will reduce friction and wear. This is achieved by creating a hydrodynamic film of appropriate thickness and strength to support the load while separating the balls from the raceway.

Bearing lubrication prevents against metal to metal contact. It also minimizes retainer wear by reducing friction. Proper lubricant will conduct heat away from the bearing. Operational conditions such as temperature, loads, speed, torque, and environment determine the lube appropriate for the application. Oils are used where low bearing friction torque is a primary concern. Grease may provide longer operating life and resist lubricant loss due to centrifugal forces at higher speeds. Dry film lubricants are often appropriate for vacuum environments or other conditions where wet lube is not an option. PACAMOR KUBAR BEARINGS (PKB) offers bearing lubrication in grease form, oil lubricants, and solid dry film lubricants.

For further assistance with bearing selection and design, please feel free to contact our engineering team or look at our online catalog .

This is a sample of the most popular oils and greases for miniature and instrument ball bearings. If you require a lubricant that is not listed here, please contact us. PKB maintains an extensive inventory of other popular lubricant options. Dry film lubricants are also available upon request.

Bearing Lubrication - Oils
  Viscosity (Centistokes)  
PKB Code Lubricant Type 100 Degrees Fahrenheit 210 Degrees Fahrenheit Operating Range (Fahrenheit) Mil-Spec
L245X WINSOR LUBE L-245-X DIESTER 31 5.3 -65 to +300 MIL-L-6085A
AND401D ANDEROL 401D DIESTER 11.5 3.2 -65 TO +300 -
DC510 DC510 SILICONE 38 14 -65 to +500 MIL-L-27694
KRY143AC KRYTOX143AC FLUOROCARBON 260 26 -30 TO +550 -

 

Bearing Lubrication - Grease
PKB Code Lubricant Base Oil Thickener Color Operating Range (Fahrenheit) Mil-Spec
ROY27 ROYCO 27 DIESTER LITHIUM BROWNISH -100 TO +300 MIL-G-23827
B325 BEACON 325 DIESTER LITHIUM LIGHT TAN -65 TO +250 MIL-G-3278
RHEO500 RHEOTEMP 500 DIESTER SODIUM BLUE -65 to +350 -
MOB28 MOBIL 28 HYDROCARBON CLAY DARK RED -65 TO +350 MIL-G-81322
SRI2 SRI-2 MINERAL POLYUREA BLUE / GREEN -20 to +350 MIL-G-3545G
KRY240AC KRYTOX 240AC FLOURINATED GREASE VIDAX WHITE -30 TO +550 MIL-G-27617
ROY13 ROYCO 13 SILICONE TEFLON LAVENDER -100 to +450 MIL-G-25013