Description
The PTH high-speed CNC diamond finger bit is an 8-segment stone fabrication tool for aggressive material removal in granite, marble, quartz, and engineered stone. With a 20mm diameter, 40mm working height, and 1/2 Gas thread, it is designed for production CNC machining where cutting speed and consistent wear matter.
CNC stone cutting and countertop fabrication
Use this diamond finger bit for CNC material removal and sink cutout work in granite, marble, quartz, and engineered stone countertops. Its segmented design supports high-production cutting, with feed rates of 24–36 inches per minute and fully engaged cutting capability up to 36 inches per minute under suitable operating conditions.
Specifications and operating parameters
- Bit diameter: 20mm.
- Working height: 40mm.
- Segment count: 8.
- Connection: 1/2 Gas thread.
- Recommended spindle speed: 5,500–8,500 RPM.
- High-production feed rate: 24–36 inches per minute.
- Suitable materials: granite, marble, quartz, and engineered stone.
- Machine application: compatible CNC stone fabrication machines.
Choose settings for your production needs
Controlled cutting at 5,200-5,800 RPM and 14-20 inches per minute. Set operating parameters for your material, machine, and cutting engagement rather than treating the maximum feed rate as appropriate for every job. Tool life varies with operating conditions.
Confirm the 1/2 Gas connection, bit dimensions, and machine requirements before ordering. This is a CNC finger bit, not an M12 radial arm finger tip.
Compare PTH finger bits, finger tips, and core bits
Choose by material, machining task, and machine connection. Finger bits and incremental finger tips are for cutting and material removal; core bits are for drilling holes.
- SKU 50029: CNC finger bit — Quartzite and hard materials. Machines: CNC machines; 1/2 Gas connection.
- SKU 50030: CNC finger bit — Porcelain and ultra-compact surfaces, including Dekton and Neolith. Machines: Compatible CNC machines.
- SKU 50035: Incremental finger tip bit — Granite, marble and quartz. Machines: Radial arm and CNC machines; M12 connection.
- SKU 50036: Incremental finger tip bit — Dekton, Neolith and ultra-compact surfaces; also quartzite, granite and engineered stone. Machines: Radial arm and CNC machines; M12 connection.
- SKU 50037: Incremental finger tip bit — Quartzite, granite and quartz. Machines: Radial arm and CNC machines; M12 connection.
- SKU 50040: 1 3/8-inch core bit — Hole drilling in Dekton, Neolith and porcelain. Machines: CNC machines; 1/2 Gas connection.
- SKU 50045: 1 3/8-inch core bit — Hole drilling in quartzite, hard granite and quartz. Machines: Compatible CNC machines.
Confirm the connection, dimensions, and operating parameters on each product page. CNC and radial arm tooling are not interchangeable unless your machine setup supports the specified connection.