Sandvik Coromant 7798299 Drill Bit 10.10mm Corodrill 860

Product Description

The SANDVIK COROMANT 7798299 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding production environments. Built on the CoroDrill 860 platform, it features a 10.10 mm cutting diameter, a 140-degree split-point geometry for self-centering entry, and an AlTiN coating that extends tool life under high heat and abrasion. The straight cylindrical shank measures 12.00 mm in diameter, and the overall length is 74.00 mm. Right-hand cutting with a regular spiral flute pattern, this bit is suited for CNC machining centers and production drilling applications where hole accuracy and tool consistency are critical. Installation is performed by qualified machinists or tooling technicians.

The 7798299 is designed for screw machine length drilling operations where a compact, rigid tool is required. With a flute length of 47.00 mm and a maximum drilling depth of 32.10 mm at a 3xD flute-to-diameter ratio, it is well matched to through-hole and blind-hole drilling in steel, cast iron, and similar materials within the DIN 6537K specification. Coolant-through capability supports chip evacuation and heat management during deep-hole passes. This bit fits within the 9.50 mm to 11.00 mm drill bit size range and is packaged as a single unit.

Key Features

• AlTiN coating provides high heat and abrasion resistance for extended tool life in ferrous and hard materials
• 140-degree split-point geometry for accurate self-centering without a pilot hole
• Coolant-through design supports chip evacuation and thermal control during deep drilling passes
• Solid carbide construction delivers rigidity and dimensional consistency under production loads
• 12.00 mm straight cylindrical shank for standard ER and hydraulic toolholder compatibility
• DIN 6537K specification compliance for consistent dimensional tolerances

Compatibility

Designed as a CoroDrill 860 series screw machine length drill bit conforming to DIN 6537K, suitable for use in CNC machining centers and production drilling setups accepting a 12.00 mm straight cylindrical shank. Drill bit size range: 9.50 mm to 11.00 mm.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per applicable safety procedures. Verify toolholder runout and clamping torque per machine and toolholder manufacturer specifications before operation. Coolant-through connections should be confirmed and tested before initiating a drilling cycle. Inspect cutting edges for wear or chipping before each use and replace the tool if edge integrity is compromised.