Solid Oil, or oil retained within a polymer, offers many advantages over its more fluid cousin, grease, for bearing lubrication. In low temperature applications, the fact that Solid Oil does not stiffen, as conventional grease does, means that the starting torque does not increase with dropping temperatures.
Solid Oil works by releasing oil from the polymer during a bearing’s operation to lubricate both the raceways and rolling elements. When the bearing stops running, excess oil is reabsorbed by the polymer. Bearings filled with Solid Oil contain between two and four times as much lubricant as a greased bearing.