Lubricant selection is of critical importance for the performance of a
ball bearing. It affects Life, Torque, Speed, Noise, Grease migration,
Outgassing, Temperature effects and rust prevention. In most cases NMB
supplies ball bearings as a complete unit, pre-lubricated with grease.
It is not normal to re-lubricate ball bearings as they are "sealed
The two basic types of lubricants available are oil and grease.
Applications that require extremely low torque or narrow range of torque
variation, are suited to use oil as a lubricant.
Depending on the application, it is possible that an oil lubricant may
not meet a specific requirement. Please contact to NMB for the proper oil
Greases are comprised of a base oil and a thickener.
The life obtained from greases is considerably greater than that of just
oil. This is because of a continuous mechanism of lubrication by base oil
separation coming from the construction of the thickener.