Diamond Core Drill for Concrete

Core drill bits for wet drilling in concrete

Sanwa's diamond core bits are core drill bits for wet drilling in concrete, made from 12 to 500 mm in diameter. Each core bit combines extra-large, sharp premium diamond grits with an extra-strong, balanced alloy steel body, built to advanced German design and technology and international safety standards.

Connection and working length by diameter

Three grades. Professional and Premium core bits cover everyday concrete drilling. Exakt, Sanwa's premium range, sets every diamond in a fixed grid so the segment wears evenly: in Sanwa's tests it drilled 45% faster and its segments lasted 35% longer before re-sharpening than standard segments.

Worn segments? Sanwa also makes diamond segments for core bits, for diameters from 12 to 1000 mm.

Questions buyers ask

Are these core bits for wet or dry drilling?
Wet drilling. For drilling without water, see Sanwa's diamond core bits for dry drilling.

Which core bit sizes do you make?
12, 14, 16, 18, 20, 22, 24, 25, 28, 30, 32, 35, 37, 40, 42, 52, 57, 62, 67, 72, 77, 82, 92, 102, 107, 112, 127, 140, 152, 162, 177, 182, 202, 225, 250, 300, 350, 400, 450 and 500 mm.

Which thread do I need?
Up to 30 mm, ½″ BSP. From 57 mm, 1¼″ UNC. From 32 to 52 mm, both are made, so choose the one that matches your core drill.