Chicago-latrobe 50568 Extra Length Drill Bit 0.4844 in Hss

Product Description

The CHICAGO-LATROBE 50568 is a high speed steel extra length drill bit designed for long reach drilling applications where standard-length bits cannot access deep or obstructed bore locations. The bit measures 0.4844 inches in diameter with a 10-inch overall length and a 7.5-inch flute length, giving it the extended reach required for through-holes in thick stock or hard-to-access workpieces. The 118-degree notched point and web-thinned, tapered web geometry reduce thrust and improve chip clearance on entry. An oxide finish provides basic surface protection. This bit is installed and used by machinists, maintenance technicians, and fabricators working with cast iron and steel.

The 50568 is suited for long reach drilling in cast iron and steel in production, maintenance, and fabrication environments. The straight-cylindrical shank with a 0.4844-inch diameter and 5-inch shank length seats in standard drill chucks. The Series 120X designation places this bit in CHICAGO-LATROBE's extended-length general purpose line. It operates in right-hand cutting direction with a regular spiral and two flutes, and does not support coolant-through delivery. Typical applications include deep-hole work on mill and drill press setups where clearance between the workpiece and spindle nose requires additional bit length.

Key Features

• Extra length design: 10 inches overall length with 7.5-inch flute length for deep and long-reach drilling
• High speed steel construction for durability in cast iron and steel applications
• 118-degree notched point with web-thinned, tapered web for reduced entry thrust and improved chip flow
• Oxide finish for basic corrosion and surface protection
• Straight-cylindrical shank compatible with standard drill chucks
• Diameter tolerance held to +0.0000 to -0.0010 inches for consistent bore sizing

Compatibility

Designed as a general purpose replacement and production drill bit for use in standard drill chucks accepting a 0.4844-inch straight-cylindrical shank, compatible with cast iron and steel workpieces as noted in the manufacturer specifications for Series 120X.

Installation Notes

This bit is installed by machinists and maintenance technicians using drill presses, mills, or hand-held drilling equipment with a compatible chuck. Secure the straight shank fully in the chuck before operation to prevent runout. Ensure the workpiece is clamped securely, as long-reach bits are more susceptible to deflection under lateral load. Follow applicable shop safety standards and machine guarding requirements when operating drilling equipment.