Using high strength and high toughness cemented carbide gear, improve the ability of teeth and wear resistance; Bending High precision bearing surface after proper heat treatment, improve the bearing the bearing capacity and service life; Thrust bearing using high hardness and high wear resistance materials, further improve the bearing life.

Use: This product is used for air drilling, such as open coal mine, iron ore, the development of the nonferrous metallic deposits.
Application: This product is used for low compressive strength, high drillability of soft formation, such as: Shale, soft limestone, soft sandstone, gravel clay, soft dolostone, salt, coal, etc.