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

Jinzhou Shitan Machinery Equipment Co., Ltd. Main Products：

Pneumatic Drilling Rig / Air Drilling Rig（ST-180,ST-200,ST-260,ST-300,ST-350,ST-400,ST450,ST-450,ST-500, ST-600,ST-800 and other Pneumatic water well drilling Rigs.）, Crawler Water Well Drilling Rig / Trailer Mounted Drilling Rig / Water Well Drilling Rig / Hydraulic Borewell Machine / Hard Rock Drilling Equipment / Diamond Core Drill Rig / Geological Drilling Rig / Soil Testing Drilling Rig / Portable Water Well Drilling Rig（ST-30，ST-50，XY-1A, XY-1B, XY-2, XY-2B,GK180, GK200, GY150, GY200 and 30 impact drill rig,ZLJ series tunnel drilling rig and other geological drilling machines）Crawler Track Undercarriage, Drilling Mud Pump（BW150,BW160,BW200,BW250,BW850 series Drilling mud pumps）, Drilling Air Compressor, Water Well Drill Bits（PDC Drill Bit， Tricone Bit， DTH Button Bit）, Water Well Drill Pipe, Drilling Rig Spare Parts( drilling rods , drilling rods joint , casing pipe, casing coupling, core tube, core tube coupling, lifters, automatic drop hammer, sampler, SPT tool, wrench fork, pad fork, lock joint), Track Transporter

Good quality, professional after-sales service, welcome to order