T51 drop center retract button bit for underground mining

T51 Threaded Button Bit Features

The T51 threaded button bit is specially designed for high-speed drilling through hard ore rock formations while reducing bit wear.
The front end of the T51 threaded retract spherical button bit is narrower, which enhances flushing efficiency in soft rock or gravel and significantly reduces the risk of the bit becoming stuck.

Specifications of the T51 Threaded Series Button Bits

1. T51 threaded drill flat button bit.
2. T51 threaded drill drop center button bit.
3. T51 threaded drill retract button bit.
4. T51 threaded drill drop center retract button bit.

Technical Information of the Drill Button Bit

• Connection thread: T51
• Head material: Tungsten carbide
• Bit body material: High-strength alloy steel
• Chip removal grooves: Distributed along the bit for chip removal and cooling
• Head design: Spherical button shape
• Diameter: 89 mm
• Edge button angles: 35 degree and 40 degree
• Edge buttons: 8×12 mm and 9×12 mm
• Center buttons: 6×11 mm and 7×11 mm
• Weight: Ranges from 3.8 kg to 5.3 kg
• Head manufacturing process: Hot-pressing inlay technology
• Other manufacturing processes: Full carburizing heat treatment, high-frequency treatment, and phosphating process