Guhring 9002230032600 Stub Drill Bit 0.1285 in Hss

Product Description

The GUHRING 9002230032600 is a screw machine length (stub) drill bit designed for high-volume drilling applications where rigidity and accuracy are priorities. Built to DIN 1897 specification, this bit features a 0.1285-inch diameter, a 118-degree standard point angle, and a web-thinned geometry that reduces entry force and improves chip evacuation. Manufactured from coated high speed steel, it offers a practical service life on common production materials. The straight-cylindrical shank provides secure chuck retention in both manual and machine setups. With a 2-flute spiral configuration and parallel web, this bit suits repetitive hole-making tasks in machine shop and production environments.

This stub-length drill bit is suited for drilling cast iron and steel in production and maintenance settings. The reduced flute length compared to jobber-length bits minimizes deflection, making it a preferred choice for short-hole drilling on drill presses, CNC lathes, screw machines, and machining centers. Wire gauge size 30 (0.1285 inches) is commonly specified in tapping operations and close-tolerance through-hole work. Licensed machinists, toolroom technicians, and production operators are the typical end users.

Key Features

• DIN 1897 stub-length design minimizes deflection on short-hole drilling operations
• 118-degree standard point angle with web-thinned geometry for reduced thrust and cleaner entry
• Coated high speed steel construction for extended tool life on steel and cast iron
• Straight-cylindrical shank fits standard drill chucks and collet holders
• Regular spiral flute with 3xD flute-to-diameter ratio promotes chip clearance
• Right-hand cut with coolant-free operation; no through-coolant required

Compatibility

Designed as a DIN 1897-spec stub drill bit for use in standard drill chucks and collet systems accepting a straight-cylindrical shank at 0.1285-inch diameter; primary workpiece materials are cast iron and steel.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and all power is isolated before changing tooling. Seat the shank fully in the chuck or collet and verify runout before production use. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection based on workpiece material.