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- Contact Person : Mr. Yan Peter
- Company Name : Beijing Dazheng Yongye Construction Machinery Co., Ltd.
- Tel : 86-10-52968140
- Fax : 86-10-51097491
- Address : Beijing,Beijing,North of Xiaoli Zhuang, Beier village,Shahe town, Changping district, Beijing
- Country/Region : China
- Zip : 102206
popular in 2012 Best Quality drill bit
Product Detailed
Related Categories:Mining Machinery Parts
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1.high-manganese
2.Maximum ROP
3.Running durable and extended bearing life
4.Safety and reliability
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The advantages of the drill bits :
It has rolling sealed bearing structure. The cylinder rolling element is placed within the groove of roller cone, thus enlarging the journal size and ensuring a better performance of roller bit. The secondary surface of thrust bearing of roller bit has been handled with antifriction and hardening treatment so as to decrease the frictional force of bit for protecting its hardening resistance. The roller bit uses new type lubricating grease which can bear the high temperature of 250ºC and boasts abrasion resistance. The full rubber oil reservoir uses limitable differential pressure and can prevent drilling fluid from entering lubricating system so as to provide qualified lubrication for bearing system.
popular in 2012 Best Quality drill bit
