Moly Rock Drill Oil

Moly Rock Drill Oil is an anti-wear, extreme pressure emulsifiable oil that is specially formulated to meet the lubrication requirements of high speed, heavily loaded rock drills, drifters, hammers and other pneumatically operated equipment.

Moly Rock Drill Oil is blended from the finest high viscosity index solvent refined severely hydrofinished 100% paraffin base stocks available. These paraffin base stocks allow the Moly Rock Drill Oil the ability to operate over wide temperature ranges. They also provide the Moly Rock Drill Oil with excellent thermal stability, along with excellent resistance to oxidation.

Blended into these paraffin base stocks is a non-corrosive additive package which provides the Moly Rock Drill Oil with exceptional extreme pressure qualities. This non-corrosive additive package also maximize the rust and oxidation inhibiting characteristics of the oil.

The moving parts of a rock drill are designed to perform under hydrodynamic lubrication conditions. That is, a full fluid film must separate the metal surfaces of the moving parts during operation. However, during periods of cold start up or severe shock loads, this film can be destroyed. Unless a boundary lubricant is present in the Rock Drill Oil when this full fluid film is destroyed, wear can take place.

Plating with molybdenum disulfide

To prevent this wear, molybdenum disulfide is further blended into the Moly Rock Drill Oil. The molybdenum disulfide provides the boundary lubrication needed by plating itself to the metal surfaces of the rifle bars, drill pistons and cylinders of the rock drill. This moly film will withstand pressures up to 500,000 pounds per square inch, thus reducing wear and extending equipment life.

The molybdenum disulfide also provides a smooth finished surface on all moving parts of the rock drill. This minimizes the action of cold welding, which can occur during cold start up after the rock drill has been standing idle.
Moly Rock Drill Oil also contains rust and corrosion inhibitors and emulsifiers. These emulsifiers assure the formation of a stable emulsion which allows for lubrication in the presence of water along with the prevention of any foaming that may occur.


Product Name



127 Moly Rock Drill Oil SAE 10

127 Moly Rock Drill Oil SAE 20

127 Moly Rock Drill Oil SAE 30

127 Moly Rock Drill Oil SAE 40

127 Moly Rock Drill Oil SAE 50