Hertel 89323141 Taper Shank Drill Bit 15/16 in 3MT Hss

Product Description

The HERTEL 89323141 is a taper shank drill bit designed for metal drilling applications in machine shop and industrial environments. Built from high-speed steel with an oxide finish, it delivers reliable performance in ferrous and non-ferrous materials. The bit measures 15/16 inches in diameter with an overall length of 10.75 inches and seats into the spindle via a No. 3 Morse taper shank. The 118-degree split point geometry reduces walking at drill entry and lowers the thrust required to start the hole. This bit is installed by machinists and tool-and-die professionals using drill presses, lathes, or milling machines equipped with a 3MT spindle socket.

This taper shank drill bit is suited for production drilling and general-purpose metalworking in machine shops, manufacturing facilities, and maintenance departments. The No. 3 Morse taper shank provides a secure, self-holding connection in compatible spindle sockets without requiring a separate chuck. The 15/16-inch diameter is commonly used for bearing bores, clearance holes, and stepped drilling operations. Coolant-through capability is not provided on this bit, making it best suited for conventional flood coolant or dry cutting setups depending on material and feed rate.

Key Features

• 15/16 inch diameter with a 0.9375 inch decimal equivalent for precise application matching
• No. 3 Morse taper shank for self-holding fit in 3MT spindle sockets and tailstocks
• 118-degree split point reduces drill walking and lowers entry thrust
• High-speed steel construction provides heat resistance during metal cutting
• Oxide finish offers a base level of corrosion resistance and reduces friction at the cutting edge
• 10.75 inch overall length accommodates deeper hole depths than standard jobber-length bits

Compatibility

Designed for use in drill presses, lathes, and milling machines fitted with a No. 3 Morse taper spindle socket or sleeve.

Installation Notes

Installation is performed by machinists using a 3MT spindle or tailstock socket; ensure the taper and socket are clean and free of chips before seating the bit. Power down and lock out the machine before inserting or removing the bit. A drift key and soft-faced mallet are the standard tools for ejecting the taper shank from the socket. Do not use this bit in a standard keyed or keyless chuck without an appropriate Morse taper adapter sleeve.