Product Description
This 40 mm four-tooth cat-paw bit is a tapered rock-drilling option for metal-mine development, narrow headings, and controlled holes in competent ground. The face style is intended for impact drilling rather than continuous shearing, making it relevant where a pneumatic rock drill and tapered rod are already part of the system. Use the mining and exploration application archive to frame the work, then check the interval against the abrasive formation archive. It is not a substitute for overburden casing.
The filename identifies a 40 mm ball-tooth bit with four teeth, a tapered interface, and a carbide cat-paw face. The working structure therefore combines an alloy-steel body with four fixed carbide contacts arranged to break rock under repeated blows. “Cat-paw” is a face description, not a complete connection standard. The taper angle, socket depth, skirt length, port count, and exact carbide grade are not provided. Those dimensions must be checked against the existing rod and drill before the nominal 40 mm gauge is accepted as a usable fit.
Use 1,000–3,000 lbf/in of diameter WOB and 25–60 RPM, with conservative loading during collaring and at broken contacts. Medium rock can provide stable engagement, while hard or quartz-rich ground raises the risk of localized insert and gauge wear. Flushing demand depends on hole depth, rod bore, and available air, so no flow figure is assigned. The stated limitation is that the product name confirms a tapered family but not its taper dimensions. Background geology for mineral projects can be reviewed through the U.S. Geological Survey.
