Chicago-latrobe 69001 Jobber Drill Bit No.1 Hss 135

Product Description

The CHICAGO-LATROBE 69001 is a heavy-duty jobber length drill bit designed for drilling steel alloy and similarly demanding ferrous materials. Manufactured from high speed steel with a bright uncoated finish, this bit measures 0.2280 inches in diameter (No. 1 wire size) and features a 135-degree split point that reduces walking and improves hole entry without a center punch. The parabolic flute geometry promotes efficient chip evacuation and reduced heat buildup during high-feed drilling cycles. At 3.875 inches overall length with a 2.625-inch flute, it fits standard jobber-length applications in both hand-held and machine setups.

This drill bit is suited for metal fabrication shops, maintenance and repair operations, and production drilling environments where steel alloy is the primary workpiece material. The straight cylindrical shank accepts standard drill chucks on bench-top drill presses, CNC machining centers, and portable drills. The Series 150DH designation identifies it as a heavy-duty general-purpose bit built for consistent performance in production or field settings where tool life under load is a priority. Right-hand cut geometry is standard for conventional drilling operations.

Key Features

• 135-degree split point reduces drill walk and improves self-centering on flat and curved steel surfaces
• Parabolic flute design accelerates chip removal and lowers heat accumulation during deep drilling
• Web-thinned, tapered web construction reduces thrust force required at the cutting tip
• High speed steel construction provides toughness and wear resistance in steel alloy applications
• Bright uncoated finish allows easy visual inspection for wear and edge condition
• Straight cylindrical shank with 0.2280-inch diameter fits standard chucks without adapters

Compatibility

Designed as a direct-fit jobber length drill bit for use in standard three-jaw drill chucks accepting straight cylindrical shanks in the 0.2000 to 0.2500 inch diameter range, including bench drill presses, portable electric drills, and compatible CNC toolholders.

Installation Notes

Secure the shank fully in the chuck and verify concentricity before beginning a cut. For machine use, confirm spindle speed is appropriate for the workpiece material and bit diameter per standard machining references. Inspect the cutting edges and split point before each use and replace or resharpen when edge degradation is visible. Do not force the bit through material at feeds that cause excessive heat or chatter, as this accelerates wear and can cause premature failure.