Wide application range: the practice proves that this drill bit is suitable for carbonate rock, limestone, chalk, clay rock, siltstone, sandstone and other soft and hard rocks (9 grade drillability of rock, hard rock drilling).
Compared with normal drill bits, especially drilling in 6-8 grade rock, the effect is especially remarkable.
Parts | Weight /kg | Part No | ||||
1 | Top Sub | 31.2 | 01-SP781-01 | |||
2 | O'Ring | 0.01 | 01-SP781-02 | |||
3 | Disc Spring | 0.5 | 01-SP781-03 | |||
4 | Check Valve | 0.65 | 01-SP781-04 | |||
5 | Spring | 0.09 | 01-SP781-05 | |||
6 | Valve Seat | 5.5 | 01-SP781-06 | |||
7 | Inner Cylinder | 5.5 | 01-SP781-07 | |||
8 | Piston | 34.5 | 01-SP781-08 | |||
9 | Piston Case | 47 | 01-SP781-09 | |||
10 | Guided Sleeve | 5.65 | 01-SP781-10 | |||
11 | Check Ring | 0.02 | 01-SP781-11 | |||
12 | Retainer Ring | 1.3 | 01-SP781-12 | |||
13 | Drive Chuck | 11.5 | 01-SP781-13 | |||
14 | Drill Bit | 01-SP781-14 | ||||
Technical parameters | ||||||
Length(Less bit) | Weight | Outer diameter | Connection Thread | Bit Shank | Hole Range | |
1225mm | 143.5Kg | 165mm | API31/2"REG | ND75A | 175-216mm | |
Working Pressure | Recommended Rotation Speed | Air Consumption | ||||
1.8 Mpa | 2.4 Mpa | |||||
1.5-2.8 Mpa | 30-60 r/min | 21 m³/min | 28 m³/min | |||
Company
JS DRILL is a manufacturer specialized in the research,development and production of DTH drilling rig,Water well drilling rig,Air compressor,DTH hammer,DTH bits,Drilling Pipe and all accessories about above products.Normally we offer full set solution and service to customers.
we are also equipped with a set of physical and chemical testing machine on the hydraulic pressure, heat treatment, no damage, etc. to ensure the quality of products. At the beginning of the establishment, we passed the certification of CE and ISO9001.
Packaging & Shipping
Exhibition
FAQ
1 Guaranteed:
Our products are distributed throughout the world, being involved in more than Asia, Africa and South America countries and regions. And our products win the good reputation of our foreign customers.
2 How about price?
Yes, we are factory and be able to give you the lowest price than market one, and we have a policy that “ for saving time and absolutely honest business attitude,we quote as low as possible for any customer, and discount can be given according to quantity”.
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