Chicago-latrobe 48701 Screw Machine Drill Bit 0.228 in

Product Description

The CHICAGO-LATROBE 48701 is a screw machine length drill bit engineered for general-purpose drilling in metalworking applications. It measures 0.228 inches in diameter (Wire Size 1) with an overall length of 2-7/16 inches and a flute length of 1-5/16 inches. The bit is manufactured from high-speed steel and features a standard 118-degree point angle with web thinning for reduced thrust and easier penetration. The bright, uncoated finish suits standard-speed operations without coolant. Machinists, tool-and-die technicians, and maintenance trades install this bit in screw machines, drill presses, and hand-held drilling equipment.

The 48701 is suited for drilling cast iron, non-ferrous metals, and steel in production and maintenance environments. Its screw machine length profile, shorter than jobber length, provides added rigidity and reduced deflection in close-tolerance work. The 2-flute spiral design promotes chip evacuation during through-hole and blind-hole operations. This bit fits standard straight-shank collets and chucks common across screw machines and benchtop drilling equipment in light manufacturing and fabrication shops.

Key Features

• Wire Size 1 diameter of 0.228 inches with a tight tolerance of +0.0000 to -0.0007 inches
• 118-degree standard point angle with web thinning for reduced entry thrust
• High-speed steel construction rated for cast iron, non-ferrous metal, and steel
• Screw machine length body for increased rigidity and reduced runout
• Bright, uncoated finish for general-purpose dry or low-speed cutting
• Parallel web configuration with regular spiral flute for consistent chip removal

Compatibility

Designed as a general-purpose replacement screw machine drill bit compatible with standard straight-cylindrical shank collets and drill chucks used in screw machines, drill presses, and similar machine tool setups.

Installation Notes

Installation and bit changes should be performed with the machine powered off and the spindle fully stopped. Secure the straight-cylindrical shank firmly in a properly sized collet or chuck to the manufacturer-specified torque for that chuck model. Confirm workpiece is clamped before beginning a drilling cycle. Coolant-through operation is not supported on this bit; use appropriate cutting fluid applied externally when required by the workpiece material.