5 1/8 Inch 130mm DHD340 drill Bits with Guage 8*16mm Center 8*14mm for hard rock
DTH bits face desigh and selection:
Description
1. Rapid drilling speed, bit body wearless;
2. Advanced heat treatment process, ensure the drilling life longer than similar products in the market.
3. DHD, MISSION, SD, QL, NUMA,different series of products, it can meet needs of different working conditions.
Applications
Widely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole,mountain reinforcement, anchorage and other engineering holes, geothermal exploration hole, Well bore and other fields.
Specification
| Bit Dia.(mm) | Qty.× Button Dia.(mm) | Qty.Flushing holes | Weight (kg) |
| mm | inch | Outer | Front |
| 130 | 5 1/8'' | 8×Φ16 | 8×Φ14 | 2×Φ18 | 9.9 |
Face shape Features
Concave Face
1. Capable of drilling straighter holes in medium to hard rock which is broken or less consolidated
2. Offers high penetration rate in the above stated rock conditions
3. Has excellent air flushing characteristics
4. Predominant face style for majority of drilling conditions
Flat Face
1. Have a superior performance in hard, abrasive and broken rock conditions
2. They however have a slower penetration rate in comparison to a concave face bit
Convex Face
1. This face has been designed to offer high penetration rate in soft rock such as shale, limestone etc
2. They are recognized for having excellent capability for drilling into moderately consolidated rock conditions
The appearance of the picture is different from that of the actual product, and the actual product is the standard.
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5 1/8 Inch 130mm DHD340 drill Bits with Guage 8*16mm Center 8*14mm for hard rock Images
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