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Retrac Type T51 127mm Threaded Drill Bits for Mining Tunneling Drilling

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retrac button bit suitable for powerful percussive drills and top hammers with high speed drifter, the products are widely used in bench and production drilling, extensional drilling.

  • T51 127mm
  • Kingkong Drills
  • 127-T51
  • Retrac Type T51 127mm Threaded Drill Bits for Mining Tunneling Drilling
  • Retrac Drill Bit
  • flat, uniface, drop center
  • T51
  • Carbide shape: Dome, ballistic, semi-ballistic
  • benching and long-hole drilling underground
  • MF rod, MM rod heavy duty top hammer
  • superior alloy steel and tungsten carbide

Retrac Drill Bits are widely applicable to mining industry, tunneling and underground engineering, open pit, construction drill, blast industry, civil engineering operations,road, gas line, pipe and trench projects, quarry work, rock anchoring and ground stabilization projects, water well industry, etc.


Rock Drill Thread Button Bits is suitable for R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, T60 rock drill rods use. It have many thread. It's widely used for hard rock(f=8~18) drilling use.
1) Thread connection: R22, R25, R28, R32, R35, R38, T38, T45, T51, ST58, GT60
2) Alloy steel:42CrMo
3) Suitable carbide tips:YK05
4)Technology:hot-pressing or welding


We can supply all kind of button bits with Rope thread R22, R25, R28, R32, R35, R38 and T thread, T38, T45, T51, ST58, T60 etc.
Main Button Bits: R32-43MM, R32-45MM, R32-51, R32-64, R32-76,T38-64, T38-76MM, T38-89, T38-102MM,T45-76MM, T45-89MM, T45-102MM,T51-89MM, T51-102MM, T51-127 etc.


We can offer you all face design, flat face, drop-center face, normal body and retrac body.

Diameter: 76mm, 89mm, 102mm

Skirt body: retrac, and normal, straightrac

Face type: flat, uniface, Drop Center

Carbide shape:  Dome, ballistic, semi-ballistic

Used in bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer drilling tools.

T51 retrac bit2T51 retrac bit3

Applications of Thread button bits

1.Underground mining and surface mining

2.Long hole drilling

3.Bench mining and production mining

4.Granite, Basalt, Limestone rock etc.


Before Official Order, please confirm below informations:

(1) Thread Type

(2) Standard or Retrac

(3) Bit button shape (tip shape)--Spherical or Ballistic

(4) Bit face shape--Drop Center, Flat Face, Convex, Concave, etc...


Contact Amy Zhang for more details

Email: amy@kingkongdrills.com

Mobile: +86 13907256175 (Wechat/Whatsapp/Skype) 





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