R25 51mm Normal Body Bit Hard Rock Drill Bit with Flat Face for
Drifting and Tunneling
We are one of the professional manufacturers & suppliers of rock
drilling tools, tungsten carbide button bits, DTH bits, DTH
hammers, rock tools, coal mining tools, mining rock tools,
quarrying tools, machine tools, DTH hammers & bits, retrac button
bits, thread button bits, tapered button bits, chisel bits, cross
bits, thread cross bits, tapered cross bits, shank adapter, shank
adaptors, thread bits, taper bits, drill rod, drill bits, rock
bits, mining bits, integral drill steel, tapered drill rods, thread
drill rods, M-F (male-female) rods, extension rods, integral drill
rods, pneumatic drill rods, self-drilling anchor, drifter rods,
hollow drill steels, shoulder drive drilling, drifting and
tunneling, bench and production drilling, furnace tapping tools,
down the hole drilling, coal cutter pick-shaped bits.
Bit Face Shape | Introduction |
| Drop Center Face | 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.
|
Our Service
Pre-sale service:
Act as a good adviser and assistant of clients enable them to get
rich and generous returns on their investments .
1. Select equipment model.
2. Design and manufacture products according to client's special
requirement ;
3. Train technical personnel for clients .
Services during the sale:
1. Pre-check and accept products ahead of delivery .
2. Help clients to draft solving plans .
After-sale services:
Provide considerate services to minimize clients' worries.
1. Complete After-sales service,professional engineers available to
service machinery at home or oversea.
2. 24 hours technical support by e-mail.
3. Other essential technological service.
Specification of other Thread Button Bits:
| Bit Dia.(mm) | Thread | NO. X Button Dia. | NO.Flushing Holes(PCS) | Weight(KG) |
| Gauge | Front | Side | Front |
| 33 | R22 | 5×7 | 2×7 | 2 | 1 | 0.4 |
| 35 | R25 | 5×8 | 2×7 | 2 | 1 | 0.4 |
| 38 | R25 | 5×8 | 2×7 | 1 | 2 | 0.5 |
| 41 | R25 | 5×9 | 2×8 | 1 | 2 | 0.55 |
| 41 | R28 | 5×9 | 2×8 | 1 | 2 | 0.65 |
| 41 | R32 | 4×9 | 2×8 | 2 | 1 | 0.65 |
| 41 | R32 | 5×9 | 2×8 | 2 | 1 | 0.65 |
| 43 | R28 | 4×9 | 2×9 | 1 | 1 | 0.67 |
| 43 | R28 | 5×9 | 2×8 | 2 | 1 | 0.67 |
| 43 | R32 | 4×9 | 2×9 | 2 | 1 | 0.67 |
| 43 | R32 | 5×10 | 2×9 | 2 | 1 | 0.67 |
| 43 | R32 | 6×9 | 2×8 | 1 | 2 | 0.67 |
| 45 | R28 | 4×10 | 2×9 | 1 | 1 | 0.8 |
| 45 | R28 | 5×9 | 2×9 | 2 | 1 | 0.8 |
| 45 | R28 | 6×9 | 3×8 | 3 | 1 | 0.8 |
| 45 | R32 | 5×11 | 2×9 | 2 | 1 | 0.8 |
| 45 | R32 | 6×9 | 3×8 | 1 | 3 | 0.8 |
| 48 | R32 | 5×11 | 2×9 | 2 | 1 | 0.9 |
| 48 | R32 | 6×9 | 3×8 | 1 | 3 | 0.9 |
| 51 | R32 | 5×11 | 2×10 | 2 | 1 | 1.1 |
| 51 | R32 | 6×10 | 3×9 | 1 | 3 | 1.1 |
| 57 | R32 | 6×11 | 3×10 | - | 3 | 1.3 |
| 64 | R32 | 6×11 | 3×11 | 2 | 1 | 1.6 |
| 64 | R32 | 8×10 | 4×10 | 2 | 2 | 1.6 |
| 64 | R38 | 6×12 | 3×11 | 2 | 1 | 1.6 |
| 76 | R32 | 6×12 | 6×11 | 1 | 2 | 2.7 |
| 76 | R32 | 8×11 | 4×11 | 2 | 2 | 2.3 |
| 76 | R38 | 8×12 | 4×11 | 2 | 2 | 1.9 |
| 89 | R32 | 7×12 | 6×11 | - | 3 | 3 |
| 89 | R32 | 8×12 | 5×12 | 2 | 2 | 2.9 |
| 89 | R38 | 8×12 | 5×12 | 2 | 2 | 3.3 |
| 102 | R32 | 14×12 | 1×11 | 2 | 3 | 3.5 |
