We guaranteed products at a competitive price and high quality. At present, our products have a very good sale in
Domestic and overseas market. We wish to cooperate with you to create a bright future and mutual benefit. Much appreciation for your prompt attention in advance, we are eager to look forward to hearing from you soon.
Rubber sealed sliding bearing bits are sealed by special type "O". Under the normal rotary speed conditions, they can stand high bit pressure. The bore surface of the cone has been treated with special techniaue in order to improve sliding motion of the bearing. And every performance is improved greatly.
1 O-shape seal ring with high saturation butadience acrylonitrile rubber improved the bearing sealed reliability.
2 To adapt high strength and toughness hard alloy teeth, the shock resistance has been increased and the breakage rate has been decreased.
3 The bearing contact surface, neck journal of jaw have been adapted to wear resistance alloy materials, the special craft processing has been applied in the bore surface of the cone which increases the load capability and the working life.
4 Optimized tooth number of cone and height of tungsten carbide tooth which improved the total cutting property and drilling footage.
5 High-performance lubricant grease has been applied in bearing which increased lubricating and protecting.
| IADC | WOB(KN/mm) | RPM(r/min) | Applicable Formations |
| 417/427 | 0.3-0.9 | 150-70 | very Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc. |
| 437/447 | 0.35-0.9 | 150-70 | very Soft formation with low compressive strength and high drillability,such as clay,soft mudstone,shale,salt,loose sands,etc. |
| 515/525 | 0.35-0.9 | 180-60 | very Soft formation with low compressive strength and high drillability,such as mudstone,salt,soft limestone, sands,etc. |
| 517/527 | 0.35-1.0 | 140-50 | Soft formation with low compressive strength and high drillability,such as mudstone,salt,soft limestone,sands,etc |
| 535/545 | 0.35-1.0 | 150-60 | medium soft with harder formation, more abrasive streaks,such as hard shale,mudstone,soft limestone,etc. |
| 537/547 | 0.4-1.0 | 120-40 | medium soft with harder formation, more abrasive streaks,such as hard shale,mudstone,soft limestone,etc. |
| 617/627 | 0.45-1.1 | 90-50 | medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
| 637 | 0.5-1.2 | 80-40 | medium hard with higher compressive strength as well as thick and hard streaks,such as hard shale,sands,limestone,dolomite,etc. |
| 737 | 0.7-1.2 | 70-40 | Hard with high abrasiveness such as hard limestone,dolomite,firm sands,etc |
| 827/837 | 0.7-1.2 | 70-40 | very hard with high abrasiveness,such as quartzite,quaruzite sand,chert,basalt,granite,etc. |
Hebei HengJi Drill Bit Manufacture Co., Ltd., as a leading manufacturer of tricone bit and PDC bits, our products are made strictly complying with API specifications and ISO9001.
Hebei HengJi Drill Bit Manufacture Co. Ltd was established in 1997. We have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices.
We ship to more than 30 different countries and serve industries such as Oil & Gas, water well, Construction, Mining, Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with
Everything from choosing the right bit to shipping around the globe.
Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop. Reduce the cost, Speed the drilling, Guarantee the safety is always our aim.
