5 Groups Ribs Coring Coal Rock Mining Drill Bits
91 / 113 mm · Carbide coring bit
Ribbed coring drill bit for coal-rock mining, with five groups of ribs and a cast carbide construction. The 91# and 113# designations correspond to 91 mm and 113 mm sizes.
Technical specifications
| Model designations | 91# / 113# |
|---|---|
| Size options | 91 mm / 113 mm |
| Material | Carbide |
| Manufacturing process | Casting |
| Application | Coal mining |