Rock drilling tools factory ProDrill manufactures rock drill bits: T38 Threaded Button Bits is the most important size for benching and long-hole drilling underground.
Code No.: Q12-T38-76
Diameter: 76mm
Length: 155mm
Gauge Buttons: 12mm*12
Front Buttons: 11mm*2
Skirt Design:retrac
Carbide Design: Dome
Face Design: Flat
Water Holes: 2 on front
Diameter 64mm 76mm, 89mm,
Skirt body: retrac, and normal,
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.
12 Dome carbide inserts T38 threaded drill bits with flat face design,
76mm diameter and retrac for bench drilling and underground long hole drilling.
Flat-face design detail of T38-76 threaded button bit with dome buttons, retrac, to match with
extension drill steels.
*** Features & benefits:
*Different front designs for various rock formations
*Longer service life
*Improved hole straightness
*Lowest cost per meter drilled
*** Size and Specification:
| Thread |
Diameter range |
Skirt Design |
Face Design |
Button Design |
| Normal |
Retrac |
Flat Face |
Drop Centre |
Hemispherical |
Ballistic |
Conical |
| R22 |
|
yes |
no |
yes |
no |
yes |
no |
no |
| R25 |
35-57mm |
yes |
no |
yes |
no |
yes |
yes |
no |
| R28 |
36-57mm |
yes |
no |
yes |
no |
yes |
no |
no |
| R32 |
41-76mm |
yes |
yes |
yes |
yes |
yes |
yes |
no |
| R35 |
48-51mm |
yes |
yes |
yes |
yes |
yes |
yes |
no |
| R38 |
57-127mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| |
|
|
|
|
|
|
|
|
| T38 |
64-102mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| T45 |
76-127mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| T51 |
89-140mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| T60 |
102-152mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| |
|
|
|
|
|
|
|
|
| ST58 |
89-140mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| GT60 |
93-140mm |
yes |
yes |
yes |
yes |
yes |
yes |
yes |
| ST68 |
102-152mm |
yes |
yes |
yes |
yes |
yes |
yes |
no |
drill bits face shape selection
| Bit Face Shape Selection |
Brief introduction |
| Drop Center Bit |
For high penetration rates in soft to medium hard and fissured rock formations, Low to medium air pressures. Maximum hole deviation control. |
| Concave Face |
The all-round application bit face specifically for medium hard and homogeneous rock formations. Good hole deviation control and good fishing capacity. |
| Convex Face |
For high penetration rates m soft to medium-hard with low to medium air pressures. It is the most resistance to steel wash. And many reduce the load and wear on the gauge buttons. But poor hole deviation control. |
| Double Gauge Face |
This kind face shape is suitable for fast penetration rates in medium to hard rock formations. Designed for high air pressures and good resistance to steel wash step gauge bit. |
| Flat Face Bit |
This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressure. Good penetration rates are resistance to steel wash. |
drill bits carbide button shape selection
| Carbide button shape selection |
Brief introduction |
| Domed/Round Button |
Domed /Round Buttons are usually used as gauge buttons of DTH Bits. Suitable for very abrasive and very hard formations. |
| Parabolic/Semi- Ballistic Buttons |
Parabolic Buttons are usually used as gauge buttons and front buttons of DTH Bits, suitable for medium abrasive and hard formations. |
| Ballistic Button |
Ballistic Buttons are usually used as front buttons of DTH Bits, Suitable for medium abrasive and medium hard formations. They can also be used as gauge buttons if the rock is soft. |
| Sharp Button |
Sharp Buttons are usually used as front buttons of DTH bits for soft formations where fast penetration rates are possible. |
| Flat Button |
Flat buttons are usually used as protection buttons to reduce Near on rubbing surfaces of DTH Bits. |
Besides, we have a wide range of rock drilling tools for drilling projects, including DTH Hammer, DTH Bit(Hammer bit), RC Hammer, RC Bit, drill pipe; Overburden drilling systems, symmetrix system; retrac button bit, shank adapter, coupling sleeve, drill rod; tricone bits, drill collar etc.
*** ROCK DRILL BITS MAIN DESCRIPTIONS
1. Tapered rock drill bits
Type: Chisel Bits / Cross Bits / Button Bits
Diameter: 28mm,30mm 32mm,34mm,36mm,40mm,42mm,44mm
2. Thread rock drill bits
Thread Tpe: R22, R25, R28, R32, R38, T38, T45, T51.
Diameter: 51mm to 127mm
Face Shape: Plate, Concave, Convex.
Bit Shank & Coupling sleeve: R22, R25, R28, R32, R38, T38, T45, T51
3. Down-The-Hole Tools
1) DTH BIT: 65MM to 254mm.
2) DTH Hammer: 76MM /90MM /110MM
3) Face Shape
Convex: Suitable for soft rock (less than 1033.5bar)
Concave: Suitable for medium-hard rock (1033.5bar~2067bar)
Plate: Suitable for hard rock (more than 2067bar)
4. Drilling Rods
1) Steel Drill Rod: H19/H22, Length: 0.5M to 6.0M.
2) Thread Rod: R25, R28, R32, R38, T38, T45, T51.
3) Integral Drill Rod: H19/H22, Diameter---20mm - 42mm.
Other products:
( In addition to supply rock drill bits year-round, we also supply other related products as follows, welcome you to contact us if any help we could provide for you.)
Note: The rock drill bits type can be customizable as your request.
Advantages:
Compared with the oversea brands, our advantages are bellowing:
a. Our products can match over 95% against the original products
b. Price are competitive against the famous brands and best quality against the small factory
Other rock drill: besides Threaded Tophammer Rock Drill Button Bits, we also supply following
Construction & Mining & Rock Drill Tools:
A. DTH Hammer and Bit (drill hole dia.: 76 ~ 381mm), Overburden Drilling System;
B. Top Hammer (drill hole dia.: 33 ~ 152mm):
Thread Tools (Button Bits, Rod, Coupling, Shank Adaptor): (R25/28/32/38, T38/45/51, ST58)
C. Ginding Machine: button bit sharpen Grinder
D. High Rang Soundless Cracking Agent (dia. 40 ~ 50mm): break rock or reinforced concrete with silent.
About Us:
1. Our factory has been specialized in manufacturing drilling tools and spare parts for over 10 years.
2. We have advanced technology and equipment.
3. Our technician has more than 13 year's professional working experience.
4. Rock drilling tools are exported throughout the world. Main market: Norway, Turkey, USA, Canada, Australia, Brazil, Uruguay, Iran, Philippines, Thailand, India, etc.
*****
5. Contact: welcome your inquiry and question
){kind=link}