China Assembled bit/hole opener

1. Company introduction

We are HeJian tengdaDrill Bit Manufacturing Co.LTD. Was established in August 18, 2001, from a simple bit processing, gradually developed into a research and development with independent research and development, design, production capacity, production, trade type enterprise.Company continuously introduced international advanced production equipment and production technology, wide social elite, and employ more people of engaging in cone bit, diamond bit of research and development, manufacturing for more than ten years of professional senior technical engineers team, to continuously upgrade its products.The company's operating philosophy is "quality first, customer first" we believe that the product has no best, only better, only by constantly improve the quality of their products to win customer recognition, can be in an impregnable position in the intense market competition.

2.Advantage

1) This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.
2)Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing.
3)Preventing reflux structure has dual function, it can avoid air counterflow and dust entering into bearing when the air-compressor stop working accidentally, and separate air and water in order to avoid water entering into bearing when it works normally to prolong the life of bearing.
4)The bit bearing can be ball locked.
5)High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.

3. products show