Chicago-latrobe 70122 Jobber Drill Bit No 22 Hss Tin

Product Description

The CHICAGO-LATROBE 70122 is a jobber-length drill bit designed for general-purpose drilling in ferrous and cast iron materials. Manufactured from high speed steel (HSS) with a titanium nitride (TiN) coating, it delivers extended tool life and reduced friction compared to uncoated HSS. The bit is sized to wire gauge No. 22, equivalent to 0.1570 inches in diameter, with a 118-degree standard point angle and a web-thinned, tapered web for easier penetration. At 3.125 inches overall length with a 2-inch spiral flute, it fits standard drill chucks used by machinists, maintenance technicians, pipefitters, and HVAC fabricators.

This bit is suited for drilling into cast iron and steel in both shop and field applications. The straight-cylindrical shank seats cleanly in three-jaw chucks on drill presses, hand drills, and magnetic base drills. The right-hand spiral flute evacuates chips efficiently during through-hole and blind-hole operations. The Series 150T designation places it within a general-purpose jobber line conforming to DIN 338 standards, making it a direct replacement for comparable jobber bits in that dimensional class. It is sold individually and well-suited to light production and maintenance drilling tasks.

Key Features

• High speed steel construction with titanium nitride (TiN) coating for extended tool life
• No. 22 wire gauge size at 0.1570 inches diameter with tight tolerance of -0.0007 to 0.0000 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust on entry
• 2-inch flute length with regular spiral and right-hand cut for consistent chip evacuation
• Straight-cylindrical shank at 0.1570 inches diameter fits standard drill chucks
• Conforms to DIN 338 standard for jobber-length drill bits

Compatibility

Designed as a general-purpose jobber-length drill bit conforming to DIN 338, compatible with standard three-jaw drill chucks accepting a 0.1570-inch straight-cylindrical shank. Rated for use in cast iron and steel workpieces.

Installation Notes

Install in a properly sized three-jaw chuck and tighten securely before use. Ensure the workpiece is clamped or fixtured to prevent rotation during drilling. Apply cutting fluid when drilling steel to reduce heat buildup and prolong coating life. Inspect the cutting edges before each use and replace the bit if chipping or wear is observed at the point.