T38 Drill Bits for Bench Drilling

T38 Drill Bits are widely used in Bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer Drilling....

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Many factors go into choosing the correct bit for your ground conditions and drilling practices. Production demands have changed the drilling industry over the past twenty years, most of the pneumatic hammers have been replaced by the harder hitting, faster drilling hydraulic hammers.

We are constantly improving our manufacturing practices to produce bits that withstand the new machines. With our experience in the rock drilling industry we can suggest products, in various styles and configurations, for your particular rock drilling application.

GMD offers a complete selection of Top Hammer Drilling Tools to meet all of your drilling needs, which are suitable for any type of drilling application in mining, tunneling, construction and quarry work.

With the top quality of alloy steels and the best carbides, we produce all Top Hammer Drilling Tools by hot press technology and multiple heat-treated process to extend the product life for maximum wear and performance in the toughest of drilling conditions.

In the recent 20 years, Thread Button Bit series development very fast, it is accompanied by hydraulic rock drill hole quickly save industry to improve the drilling speed and drilling auxiliary working hours.

Our products are suitable for powerful percussive drills and top hammers with high speed drifter, such as Atlas Copco 282 rocket boomer, Atlas Copco 352 rocket boomer jumbo, AtlasCopcoD7roc, Furukawa HCR 1200, Tamrock, and Ingesoll Rand ECM660.

The products are widely used in bench and production drilling, extensional drilling.


Specification of T38 Drill Bits , kindly check below:

Thread type: T38

Head diameters: 57mm ~ 115mm

Face designs; Flat Face, Drop Center, Uni-face;

Carbide shape: Dome, Ballistic , Semi-Ballistic,

Skirt designs: Standard, retrac, straight retrac

Application: Bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer.


Normal Skirt Flat Face Domed Button Bit

T38 Button Bit (1)



T38 Drill Bits Retrac Flat Face Semi-Ballistic Button Bit

T38 Retrac Bit


T38 Retrac Drop Center Semi-Ballistic Button Bit



Packing

Thread Button Bit Packing-4


How to choose Right T38 Drill Bits ?

Button Shape and Application

Button Shape

Application

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Domed/Round Button; Domed/Round buttons are suitable for very abrasive and very hard formations.

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Parabolic /Semi-Ballistic Button:Parabolic buttons are usually used as gauge buttons and front buttons, suitable for medium abrasive and hard formations.


Diameter

No x button diameter

Flushing hole

Weight approx kg

mm

inch

Front

Gauge

Angle

Front

Side

Spherical buttons

64

2 1/2

4 x 10

8 x 10

30°

2

-

2.2

64

2 1/2

3 x 10

6 x 11

35°

3

-

2.2

70

2 3/4

4 x 10

8 x 11

40°

2

-

2.4

70

2 3/4

3 x 10

6 x 13

35°

3

-

2.4

70

2 3/4

4 x 10

8 x 11

35°

4

-

2.4

76

3

4 x 11

8 x 11

40°

2

-

3.3

76

3

4 x 11

8 x 11

35°

4

-

3.3

76

3

4 x 11

8 x 12

35°

4

-

3.3

89

3 1/2

4 x 13

8 x 13

40°

2

-

4.8

89

3 1/2

5 x 13

8 x 13

35°

2

-

4.8

89

3 1/2

6 x 11

8 x 12

35°

2

-

4.8

89

3 1/2

4 x 11

8 x 13

35°

4

-

4.8

89

3 1/2

4 x 13

8 x 13

35°

4

-

4.8



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