Guhring 9005520019000 Stub Drill Bit 0.0748 in Hss

Product Description

The GUHRING 9005520019000 is a stub-length (screw machine length) twist drill bit designed for precision drilling in high-production and automated machining environments. Built from high speed steel (HSS) with a bright/uncoated finish, it features a parabolic flute geometry and a 130-degree split point for fast chip evacuation and reduced thrust force. The straight-cylindrical shank measures 1.4173 inches in overall length with a 0.4330-inch flute length, and the cutting diameter is 0.0748 inches (1.90 mm). Web thinning and a parallel web configuration improve centering and reduce walking on entry, making this bit well-suited for tight-tolerance hole work in aluminum and similar non-ferrous materials.

This drill bit is intended for use in screw machine operations, CNC machining centers, drill presses, and other production drilling setups where a compact, rigid stub-length tool is preferred over a jobber-length bit. The primary workpiece material designation is aluminum, and the 3xD flute-to-diameter ratio supports efficient chip clearing at shallow depths. Maximum drilling depth is 0.3210 inches (8.15 mm). This bit is sold individually but requires a minimum order quantity of 10 units per order.

Key Features

• 0.0748 inches (1.90 mm) cutting diameter with a tolerance of +0.000 to -0.014 mm for consistent hole sizing
• 130-degree standard point angle with web thinning reduces entry force and improves self-centering
• Parabolic flute design promotes fast chip evacuation in aluminum and non-ferrous materials
• Stub length construction (1.4173 inches overall) provides added rigidity over jobber-length alternatives
• High speed steel construction, bright/uncoated finish, right-hand cut
• Conforms to DIN 1897 specification for stub-length drill geometry

Compatibility

Designed as a DIN 1897 stub-length drill bit in the GUHRING Series 552, suitable for use in standard straight-shank drill chucks and collet systems accepting a 1.90 mm shank diameter. Rated for aluminum as the primary workpiece material.

Installation Notes

This drill bit is installed by a machinist or tooling technician into a compatible straight-shank chuck or collet on a drill press, CNC machining center, or screw machine. Ensure the machine is fully powered down and spindle is locked before changing tooling. Confirm chuck or collet size matches the shank diameter before tightening. Do not exceed the maximum drilling depth of 0.3210 inches without retracting to clear chips.