Wear Resistant R32 76mm Dome bit For Reaming with Ballistic Buttons
for Drifting and Tunneling
Our drill bit is made from top quality steel and tungsten carbide
as same as internationally well-known brand and apply
“hot-insertion” processing procedure to insert the buttons as same
as internationally well-known brand.Continuous field testing of our
products have been arranged to our own or contracted drilling
companies, to meet our stringent quality supervision requirements.
Product Description:
Standard Skirt
Typically smaller than the head diameter to avoid cuttings and the
rock wall, therefore optimizing hole flushing.
Carbide Designs
Perhaps the most fundamental decision when selecting different
carbide configurations is profile shape. Button bits most commonly
have either a hemispherical or semi-ballistic carbide design;
however it is not uncommon to use other carbide designs as well.
Carbide Configurations
Most face designs for button bits are offered in multiple carbide
configurations and typically differ in diameter, shape and
quantity.
Products Parameters:
| Product | Thread Button Bit |
| Skirt type | Retrac skirt, Normal skirt,Straighttrac skirt. |
| Face type | Flat face,Drop center, Uni-face |
| Button type | Spherical, Conical, Ballistic |
| Thread type | R25 R28 R32 R38 T38 T45 T51 GT60 ST68 |
| Diameter | 32mm-127mm |
Product Advantage:
1. Widely used drifting and tunneling
2. Bit face design is ideal for soft to medium rock formations
3. With retrac wings to help guide the bit in and out of the hole
4. Effective in straight hole drilling
Specification of other Retrac Button Bits:
| Type | Dimensions | | Flushing holes | | Buttons(mm) | | Angle |
| | mm | in | Front No Size | Gauge No Size | Front No Size | Gauge No Size | |
| Standard | 89 | 3.5 | 2x12 | 2x7 | 6x12 | 8x14 | 35° |
| Standard | 102 | 4 | 2x14 | - | 6x13 | 8x14 | 35° |
| Flat | 115 | 4.5 | 4x13 | - | 6x14 | 8x16 | 35° |
| Drop Center | 89 | 3.5 | 4x10 | - | 6x12 | 8x14 | 35° |
| Drop Center | 102 | 4 | 4x11 | - | 6x13 | 8x14 | 35° |
| Drop Center | 115 | 4.5 | 4x13 | - | 6x14 | 8x16 | 35° |
| Standard | 127 | 5 | 3x13 | - | 10x14 | 9x16 | 35° |
| Drop Center | 127 | 5 | 3x13 | - | 9x14 | 9x14 | 35° |
| Retract | 127 | 5 | 3x13 | - | 9x14 | 9x16 | 35° |
| Flat+retract | 89 | 3.5 | 2x11 | 2x8 | 6x12 | 8x14 | 35° |
| Flat+retract | 102 | 4 | 4x11 | - | 6x13 | 8x14 | 35° |
| Flat+retract | 115 | 4.5 | 4x13 | - | 6x14 | 8x16 | 35° |
| Drop+retract | 89 | 3.5 | 4x10 | - | 6x12 | 8x14 | 35° |
| Drop+retract | 102 | 4 | 4x11 | - | 6x13 | 8x14 | 35° |
| Drop+retract | 115 | 4.5 | 4x13 | - | 6x14 | 8x16 | 35° |
| Drop+retract | 127 | 5 | 3x13 | - | 9x14 | 9x14 | 35° |
| Reaming tools | 152 | 6 | 5x10 | 2x10 | 2x14 | 20x14 | 35° |
