PDC Core Drill Bit

89/110mm PDC Coring Bit

This 89/110mm PDC coring bit is engineered for geological coring and reaming applications. It features 1005 sunflower cutters and 3 full-round cutters per wing , delivering high drilling efficiency with significantly improved wear resistance. With an outer diameter of 110mm , it connects to an 89mm core barrel , making it suitable for mudstone, muddy sandstone, red sandstone, siltstone, strongly weathered formations, and other challenging ground conditions. It provides good core recovery, long service life, and lower overall drilling cost.

Key Advantages

  • 1005 sunflower cutters : High cutting efficiency with excellent impact and wear resistance.

  • 3 full-round cutters per wing : Enhances cutting stability and improves hole quality and core recovery.

  • 110mm outer diameter, fits 89mm core barrel : Ideal for reaming and coring operations.

  • 40mm thread length : Reliable connection, easy installation and removal.

  • Wear-resistant and durable : Reduces replacement frequency and improves jobsite efficiency.

  • Excellent coring performance : Minimizes core disturbance and improves recovery for geological logging and sample analysis.

Suitable Formations

  • Mudstone

  • Muddy sandstone

  • Red sandstone

  • Siltstone

  • Strongly weathered formations

  • Other medium-hard to complex rock layers

Applications

  • Geological exploration

  • Geological coring

  • Building foundation investigation

  • Engineering investigation

  • Rock coring

  • Mining engineering

  • Water well drilling

  • Geotechnical coring projects

Why Choose Us

We are a professional PDC drill bit manufacturer with mature production processes and stable quality control. We supply standard sizes and customized solutions for geological exploration, engineering investigation, mining, water wells, and more. Our products are designed to balance wear resistance and coring efficiency, helping customers reduce total drilling costs.

FAQ

Q1: What formations is the 89/110mm PDC coring bit suitable for?
A: It is suitable for mudstone, muddy sandstone, red sandstone, siltstone, strongly weathered formations, and similar conditions, especially for reaming and coring.

Q2: What core barrel does this bit connect to?
A: It connects to an 89mm core barrel, with a 110mm outer diameter, and is used for reaming.

Q3: What are the advantages of 1005 sunflower cutters and 3 full-round cutters per wing?
A: 1005 sunflower cutters offer good wear resistance, while 3 full-round cutters per wing improve cutting stability and core quality, extending service life.

Q4: What is the thread length?
A: The thread length is 40mm.

Q5: Do you support customization?
A: Yes. Standard sizes include 73/91mm, 89/110mm, 108/130mm, 127/146mm, and 146/168mm. Customized solutions are also available.