Hertel 89323182 Taper Shank Drill Bit 1-1/8 in 4MT Hss

Product Description

The HERTEL 89323182 is a taper shank drill bit designed for drilling large-diameter holes in metal and other hard materials. Built from high-speed steel with an oxide finish, it delivers reliable performance in general-purpose drilling applications. The bit measures 1.125 inches in diameter, carries a 4MT (Morse Taper 4) shank for secure seating in compatible spindles and holders, and features a standard 118-degree point angle suited to a wide range of workpiece materials. The 7.125-inch flute length provides adequate chip clearance on deep-bore passes, while the 12.75-inch overall length accommodates typical drill press and lathe setups.

This drill bit is intended for use in machine shop, fabrication, and industrial maintenance environments where large-diameter boring is required. The 4MT taper shank mounts directly into drill press quills, lathe tailstocks, or milling machine spindles equipped with a No. 4 Morse Taper socket. It is suited to ferrous metals, mild steel, cast iron, and similar materials in general-purpose production or maintenance drilling. Machinists, toolroom technicians, and industrial maintenance professionals are the primary installers and operators of this bit.

Key Features

• 1.125-inch (1-1/8 inch) drill diameter for large-bore applications
• No. 4 Morse Taper (4MT) shank seats firmly in compatible machine spindles
• 118-degree point angle for general-purpose drilling across common metals
• High-speed steel construction resists heat buildup during extended cuts
• Oxide finish provides light corrosion resistance and reduces friction
• 7.125-inch flute length supports chip evacuation on deeper passes

Compatibility

Designed for use in drill presses, lathe tailstocks, and milling machine spindles fitted with a No. 4 Morse Taper (4MT) socket. Verify spindle taper designation before mounting.

Installation Notes

Installation and operation should be performed by a qualified machinist or toolroom technician familiar with taper shank tooling. Ensure the machine spindle is fully de-energized and at a complete stop before seating or removing the taper shank. Clean both the shank and the spindle socket of chips and oil before inserting to ensure full taper contact and prevent slippage. Use a proper drift and drift slot to remove the bit — never strike the chuck or spindle housing directly.