The eccentric drill bit features a design where the center of the bit deviates from the axis line due to asymmetrical distribution of steel body or tire body around the bit's axis. This unique configuration creates lateral force (centrifugal force) during rotation to effectively cut the hole wall and enlarge the aperture.

Specifically designed for expansion of depth or easy shrinkage hole sections under extended casing in geological drilling operations.

When drilling complex formations, optimal performance is achieved by following these parameters:

• Low rotational speed operation
• Low feed pressure application
• High return air speed

Operators should adjust drilling speed based on rock hardness, formation looseness, water content, and other geological factors encountered during operation.

Jinzhou City Shitan Machinery Equipment Co., Ltd. specializes in manufacturing high-quality drilling equipment including:

• Core drilling rigs
• Crawler drilling rigs
• Track chassis systems
• Mud pumps
• Track transport vehicles

Drilling Rigs: XY-1, XY1-A, XY-1B, GK-180, GK-200, DPP-100 series

Drilling Tools:

• Drilling rods and bits
• Drilling joints and forks
• Lock joints
• Automatic drop hammers
• Sedimentary pipe joints
• Casing core pipes
• Various specialized drilling tools