Coring through reinforced concrete punishes cheap bits, and a bit that binds or vibrates costs you time and holes. The MK Diamond MK-Blue Turbo 4-1/2-inch (114mm) Core Bit (part 156575) is a professional grade bit from MK Diamond made for plumbers, electricians, HVAC installers and concrete contractors who drill clean round holes for pipes, conduit, anchors and penetrations in slabs and walls.
Built for
- Drilling pipe, drain and conduit penetrations through concrete slabs and walls.
- Coring concrete that contains heavy steel reinforcement.
- HVAC, plumbing and electrical installers who need a 4-1/2-inch hole.
- Concrete contractors who want a professional grade bit for repeat daily use.
Why the MK-Blue Turbo
MK Diamond built the Blue Turbo with a high diamond concentration and a segment design that gives better channeling of slurry, reduced vibration and superior performance in concrete with heavy steel. Better slurry channeling helps keep the cut clear, and reduced vibration makes the bit easier to hold on the rig and gentler on the hole. The segments are laser welded and stand 10mm high.
Use cases
Choose the 4-1/2-inch size when the penetration, sleeve or anchor you are installing calls for a 114mm hole. The bit drills to a depth of 14 inches, and MK core bit extensions let you go deeper when a wall or slab is thicker. The nut is removable so barrel extensions can be added. The MK-Blue Turbo is offered in 2, 2-1/2, 3, 3-1/2, 4, 4-1/2, 5 and 6 inch diameters, so you can stock the sizes your trade uses most. Always follow your drill rig manufacturer instructions and use proper water and slurry handling.
Specifications
- Brand and model: MK Diamond MK-Blue Turbo, Professional Grade
- Part number: 156575
- Diameter: 4-1/2-inch (114mm)
- Segment height: 10mm
- Drilling depth: 14 inches
- Connection: 1-1/4-inch-7 removable nut
- Segments: laser welded, high diamond concentration
- Extensions: available, must be ordered together with turbo core bits
Selection and care tips
Before ordering, check the diameter, arbor or thread and the material you will be cutting, and keep a spare on hand for jobs that cannot stop. Inspect the blade or bit for cracks, missing segments or damage before every use, store it dry and flat, and replace it once the segments are worn down. Concrete and masonry dust can contain silica, so use water or dust collection and approved respiratory protection.
Frequently asked questions
What is the MK-Blue Turbo core bit designed for?
MK Diamond designs the MK-Blue Turbo for coring concrete, including concrete with heavy steel reinforcement, with a high diamond concentration and a segment design that channels slurry and reduces vibration.
How deep can this core bit drill?
MK Diamond lists a drilling depth of 14 inches. Longer holes are possible with MK core bit extensions.
What thread does the 4-1/2-inch MK-Blue Turbo use?
MK Diamond lists a 1-1/4-inch-7 nut connection, and the nut is removable so barrel extensions can be added.
Can I order extensions with this bit?
Yes. Additional lengths are available with MK core bit extensions, but MK Diamond notes that turbo core bits and extensions must be ordered together.
Discount Cleaning Products is an authorized MK Diamond dealer based in the United States, and our team can help you match the right blade or bit to your saw, grinder or drill rig. If you are unsure about arbor size, thread or application, contact us before you order.
