Rubber seal bearing bits, using special "O" type rubber seal in the conventional speed of work, the bearing can withstand high pressure drilling, cone bore special process the surface of the bearing sliding increased, the quality has been greatly enhanced. 
 1. Using high-saturated nitrile rubber "O" ring seal to improve the reliability of the bearing seal. 

 2. Using high strength, high toughness of the carbide teeth, improve impact resistance, reducing the rate of broken teeth. 

 3. Bearing contact surface, teeth claws journal resistant alloys materials, cone bore for special treatment, and enhance the bearing capacity of resistance to bite, increased bearing life. 

 4. Optimization cloth cone tipped teeth and the height of the overall cutting performance and increased the amount of footage. 

 5. Using high-performance lubricant bearings, lubrication of bearings with good protection.