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Boelube® 70104 / 70106 are a series of proprietary liquid lubricants developed through Boeing manufacturing operations and lubricant experience.

In the near dry machining process, Boelube® Liquid can be delivered as fine droplets or spray through one or more nozzles positioned accordingly around the cutting tool. Delivering the Boelube liquid as fine droplets to the cutting edge is necessary in order to reduce friction between the chip, tool, and workpiece, and prevent chips from adhering to the tool cutting edge.

The near dry machining processes using Boelube® requires continual reapplication of lubricant to the tool cutting edge and wear surfaces. This can be accomplished externally on shallow drilling, reaming and tapping operations, on milling cutters, and on band and circular saws.

Using a coaxial supply of compressed air and lubricant to the nozzle, the nozzle directs Boelube® lubricant droplets in the compressed air directly to the cutting edge. The compressed air will help move chips from the tool cutting edge as the fine lubricant droplets form a thin film at the point of contact to reduce friction.

Boelube® does not contain Silicone, Sulfur, Halogens (such as Chlorine), Phosphorus, Paraffin Wax, Petroleum or Heavy Metals.

Boelube® is recommended for use with machining Aluminum, Titanium, Inconel, Stainless Steel, Carbon Fiber Composites (CFRP), Honeycomb, Kevlar, Ferrous and Non-Ferrous materials.

BOELUBE® lubricants are extensively used in the operation of portable positive feed drills.

BOELUBE® lubricants can also be delivered continually through tools with internal channels directly to the cutting edge in drilling, reaming, tapping, and milling applications.


If you need to use a disc/belt sander (or a combination machine) to sand or grind aluminum angle, tube, rod, etc. this liquid Boelube works great. Apply it directly to the abrasive surface. It will, for the most part, eliminate build-up of aluminum onto the abrasive surface, and it still allows the abrasive to cut (bite) into the material...all while keeping the aluminum much cooler than other lubricants. This lubricant really is a superior product.

Keith P
December 22, 2017


Q: Is Boelube used as received or diluted?

This comes ready to use and does not need to be diluted.

Q: Is 70104-04-001 solely for hand tools? Should we only use 70090-L-001 for a pneumatic drill?

70104-04-001 is red in color, and 70090-L-001 is clear. That seems to be the only difference. This is designed to be used to lubricate saw blades, reamers, drill bits, etc etc while working with metal and they both could be used for lubricating drill bits or reamers powered by a pneumatic drill.

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