R Thread Button Drill Bit
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R Thread Button Drill Bit

Gdrills is a professional manufacturer specializing in the production of high-quality R thread button drill bits which is suitable for drifting and tunneling, headquartered in Guiyang, Guizhou, China.
We supply R25, R38, R32, R35 threaded bits with international standards and customized requirements to suit customers needs.
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General Introduction

 

The R thread button drill bit is a drilling consumable in mining work, tunneling, bolting, quarry, water well drilling and so on. The cutting head is equipped with hardened buttons which made from tungsten carbide that crush and break rock as the bit rotates and is stuck by the hammer.

 

It is designed to be equipped with top hammer drilling rig. The top hammer mechanism delivers percussive force directly to the bit, which transfer the energy to the rock. And the rotation of the bit ensures even wear and efficient rock removal.

 

The R thread rock bit are used in variety of rock drilling operations, including rock bolting in tunneling and construction, construction drilling for foundations and infrastructure projects, blast hole drilling in mining and quarrying.

 

 

Technical Data

The skirt material takes 45CrNiMoVA. And it is processed after heat treatment, making its hardness around HRC43-48. The carbide is made of YK05 or Element 6 tungsten.

 

Tungsten carbide YK05 and Element Six carbide are the most two popular material in the market. YK05 is cost - effective and widely used for standard top hammer drilling bits. However, Element Six carbide offers higher-end, customized solutions, often with better performance in extreme drilling conditions but at a higher cost. Gdrills, if no any customer directions, usually takes Element Six to be a guarantee of quality.

 

The button shape varies from spherical, ballistic, and conical. The spherical teeth usually used for hard rock. The ballistic bit features fast penetration and less impact resistance. It is designed for soft to medium rock. With balanced in durability and penetration, the conical tungsten bit is applied for medium-hard rock most.

 

Hot pressing method is applied for tungsten carbide button insertion. This technology ensures buttons would not dislodge in high impact drilling and reduces the risk of carbide button loss, improving bit lifespan than cold pressing inserting one.

 

 

Specifications

R25 Thread Button Bit

Pic Article No. Dia Button Flushing Hole Angle (°) Weight(kg)
mm inch Front Guage Front Gauge

R25 thread button bit-1

BS(B)33R25-622 33 1 5/16 2 x 7 6 x 7 2 2 35 0.4
BS(B)35R25-622 35 1 3/8 2 x 8 6 x 8 2 2 35 0.4

R28 button bit manufacturers-2

BS(B)33R25-521 33 1 5/16 2 x 7 5 x 7 1 1 35 0.4
BS(B)35R25-521 35 1 3/8 2 x 7 5 x 8 1 1 35 0.4
BS(B)37R25-521 37 1 7/16 2 x 7 5 x 9 1 1 35 0.5
BS(B)38R25-521 38 1 1/2 2 x 7 5 x 9 1 1 35 0.5
BS(B)41R25-521 41 1 5/8 2 x 8 5 x 9 1 1 35 0.6
BS(B)43R25-521 43 1 11/16 2 x 9 5 x 9 1 1 35 0.7
BS(B)45R25-521 45 1 3/4 2 x 9 5 x 10 1 1 35 0.8
BS(B)48R25-521 48 1 7/8 2 x 9 5 x 11 1 1 35 0.9

R28 top hammer drill bit -3

BS(B)37R25-633A 37 1 7/16 3 x 7 6 x 7 3 1 35 0.5
BS(B)38R25-633A 38 1 1/2 3 x 7 6 x 8 3 1 35 0.5
BS(B)41R25-633A 41 1 5/8 3 x 7 6 x 8 3 1 35 0.6
BS(B)43R25-633A 43 1 11/16 3 x 8 6 x 8 3 1 35 0.7
BS(B)45R25-633A 45 1 3/4 3 x 8 6 x 10 3 1 35 0.8
BS(B)48R25-633A 48 1 7/8 3 x 9 6 x 10 3 1 35 0.9
BS(B)51R25-633A 51 2 3 x 9 6 x 10 3 1 35 1.0

R28 tungsten carbide button bit-1

BS(B)37R25-633B 37 1 7/16 3 x 7 6 x 7 3 1 35 0.5
BS(B)38R25-633B 38 1 1/2 3 x 7 6 x 8 3 1 35 0.5
BS(B)41R25-633B 41 1 5/8 3 x 7 6 x 8 3 1 35 0.6
BS(B)43R25-633B 43 1 11/16 3 x 8 6 x 8 3 1 35 0.7
BS(B)45R25-633B 45 1 3/4 3 x 8 6 x 10 3 1 35 0.8
BS(B)48R25-633B 48 1 7/8 3 x 9 6 x 10 3 1 35 0.9
BS(B)51R25-633B 51 2 3 x 9 6 x 10 3 1 35 1.0

 

R28 Bit Button

Pic Article No. Dia Button Flushing Hole Angle (°) Weight(kg)
mm inch Front Guage Front Gauge

R32 button bit drill -3

BS(B)37R28-521 37 1 7/16 2 x 7 5 x 9 1 1 35 0.5
BS(B)38R28-521 38 1 1/2 2 x 7 5 x 9 1 1 35 0.5
BS(B)41R28-521 41 1 5/8 2 x 8 5 x 9 1 1 35 0.6
BS(B)43R28-521 43 1 11/16 2 x 9 5 x 9 1 1 35 0.7
BS(B)45R28-521 45 1 3/4 2 x 9 5 x 10 2 1 35 0.8

R32 Drill bit types -1

BS(B)41R28-633A 37 1 7/16 3 x 7 6 x 7 3 1 35 0.6
BS(B)43R28-633A 38 1 1/2 3 x 7 6 x 8 3 1 35 0.7
BS(B)45R28-633A 41 1 5/8 3 x 7 6 x 8 3 1 35 0.8
BS(B)48R28-633A 43 1 11/16 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R28-633A 45 1 3/4 3 x 9 6 x 10 3 1 35 1.0

R32 drilling bit button-2

BS(B)41R28-633B 37 1 7/16 3 x 7 6 x 7 3 1 35 0.6
BS(B)43R28-633B 38 1 1/2 3 x 7 6 x 8 3 1 35 0.7
BS(B)45R28-633B 41 1 5/8 3 x 7 6 x 8 3 1 35 0.8
BS(B)48R28-633B 43 1 11/16 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R28-633B 45 1 3/4 3 x 9 6 x 10 3 1 35 1.0

 

R32 Drill Bit Butto

Pic Article No. Dia Button Flushing Hole Angle (°) Weight(kg)
mm inch Front Guage Front Gauge

R32 high quality button bit-6

BS(B)41R32-521 41 1 5/8 2 x 8 5 x 9 1 2 35 0.6
BS(B)43R32-521 43 1 11/16 2 x 8 5 x 9 1 2 35 0.7
BS(B)45R32-521 45 1 3/4 2 x 9 5 x 11 1 2 35 0.8
BS(B)48R32-521 48 1 7/8 2 x 10 5 x 11 1 2 35 0.9
BS(B)51R32-521 51 2 2 x 10 5 x 12 1 2 35 1.0

R32 top hammer bit manufacturers -5

BS(B)41R32-633A 41 1 5/8 3 x 7 6 x 7 3 1 35 0.6
BS(B)43R32-633A 43 1 11/16 3 x 7 6 x 8 3 1 35 0.7
BS(B)45R32-633A 45 1 3/4 3 x 7 6 x 8 3 1 35 0.8
BS(B)48R32-633A 48 1 7/8 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R32-633A 51 2 3 x 9 6 x 10 3 1 35 1.0

R32 Tungsten bit-4

BS(B)41R32-633B 41 1 5/8 3 x 7 6 x 7 3 1 35 0.6
BS(B)43R32-633B 43 1 11/16 3 x 7 6 x 8 3 1 35 0.7
BS(B)45R32-633B 45 1 3/4 3 x 7 6 x 8 3 1 35 0.8
BS(B)48R32-633B 48 1 7/8 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R32-633B 51 2 3 x 9 6 x 10 3 1 35 1.0
BS(B)54R32-633B 54 2 1/8 3 x 10 6 x 10 3 1 35 1.1
BS(B)57R32-633B 57 2 1/4 3x 10 6 x 11 3 1 35 1.2
BS(B)64R32-633B 64 1 1/2 3 x 11 6 x 12 3 1 35 1.4

R35 bit button price - 2

BS(B)51R32-633C 51 2 3 x 9 6 x 10 3 1 35 1.0
BS(B)54R32-633C 54 2 1/8 3 x 10 6 x 10 3 1 35 1.1
BS(B)57R32-633C 57 2 1/4 3x 10 6 x 11 3 1 35 1.2
BS(B)64R32-633C 64 2 1/2 3 x 11 6 x 12 3 / 35 1.4

R35 standard rock bit-1

BS(B)F64R32-842 64 2 1/2 4 x 10 8 x 10 2 / 35 1.4
BS(B)F76R32-842 76 3 4 x 11 8 x 12 2 / 35 1.8

Type A bit face design

BS(B)64R32-854 64 2 1/2 5 x 9 8 x 10 4 / 35 1.4
BS(B)76R32-854 76 3 5 x 10 8 x 11 4 / 35 1.8

 

R35 Top Hammer Bit

Pic Article No. Dia Button Flushing Hole Angle (°) Weight(kg)
mm inch Front Guage Front Gauge

Type B bit face design

BS(B)48R35-633A 48 1 7/8 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R35-633A 51 2 3 x 9 6 x 10 3 1 35 1.0

Type C bit face design

BS(B)48R35-633B 48 1 7/8 3 x 8 6 x 9 3 1 35 0.9
BS(B)51R35-633B 51 2 3 x 9 6 x 10 3 1 35 1.0

 

 

Case Study

 

 

product-631-176

Test place: IRON ORE IN DAHONGSHAN,YUNNA,CHINA

Test model: Button bit R32-45mm

Test result: 368 meters drilled and no buttons dropped off or broke

This testing was operated at Dahongshan Iron Ore, Yunnan, China, in June 2024, which proves that the hot-pressed button bit (R32-45mm) performance well under challenging geological conditions. Even though the rock was made from 60% magnetite, 40% hematite, with quartz gangue, and a rock hardness of F14-F16, the bit achieved an impressive 368 meters of drilling depth.

 

 

 

Why choose us 

 

The Eternal Goal: Lower Cost Per Meter

We don't just sell tools; we focus on your actual drilling experience. By maximizing product lifespan and optimizing penetration rates, Gdrills helps you achieve the lowest total cost per meter in your projects.

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