8-1/2-inch roller bits for foundation tools: selection checks
Roller bits can form part of the cutting arrangement on a foundation core barrel. The cutter arrangement must be considered with the barrel and ground conditions. A roller bit listed for a foundation tool should not be assumed interchangeable with an unrelated drilling bit assembly.
Roller Bits
How to specify the right configuration
The listed inquiry size is 8-1/2 inch only. Confirm mounting geometry, cutter orientation, clearances and the full cutting layout. Diameter does not define bearing design, mounting fit or the suitability of a replacement on an existing barrel.
Catalog specifications and listed options
8-1/2-inch roller bits for foundation drilling tool inquiries. Confirm the mounting arrangement, cutting layout and ground conditions with the tool drawing before selecting a replacement. Other sizes are not listed.
- 8-1/2"
Assembly review and inspection
Provide the barrel drawing and photos of the current cutter arrangement with the formation description. Compare the roller-bit and bullet-tooth barrel options during tool review. Check cutter movement and seating using the appropriate inspection procedure before deciding whether the bit alone is the required replacement.
Which roller-bit size is listed?
Only the 8-1/2-inch option is listed. Share the mounting drawing, existing cutting arrangement and ground conditions to review suitability for the foundation tool.
Preparing a quotation request in Saudi Arabia
- Identify the rig model, product, quantity and application; include the ground profile when specifying a cutting tool.
- Send a dimensioned drawing or clearly scaled photos. Identify mating components and distinguish measured dimensions from estimates.
- State the delivery city, required date and project documentation requirements. Confirm the included components before ordering.