Solid drill bit ​CoroDrill® 861
for cast ironfor stainless steelfor steel

solid drill bit
solid drill bit
solid drill bit
solid drill bit
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Drilled material
for cast iron, for stainless steel, for steel
Drill bit material
Other characteristics
high-performance, deep hole, high-precision, high-speed, twist

Max.: 14 mm (0.55 in)

Min.: 3 mm (0.12 in)


Max.: 420 mm (16.54 in)

Min.: 36 mm (1.42 in)


CoroDrill® 861 provides the high stability essential for drilling deep holes, with high speed and efficiency, up to 30xD. Overview How to use Assortment Excellent chip evacuation ACM (Advanced Chip Management) flute geometry ensures sufficient flute space along the whole length of the tool and encourages small and manageable chips. Unique surface treatment provides a very smooth surface in the flutes to decrease torque. Accurate, deep holes Accurate deep holes to depths of up to 30 × drill diameter, without pecking Greater productivity High speeds and feeds allow greater productivity to reduce cost per hole View fewer features ​​Specially designed point geometry, helps reduce thrust forces Consistent edge preparation, protects the cutting edge from premature chipping and flaking Double offset margin patented geometry offers greater stability to the drilling operation Internal coolant holes deliver coolant directly to the tip of the drill even at deep drilling depths Can be reconditioning to tools original specification, for extended tool life Find your tool and buy Tool item (227) Drill (227) Drill with chip flute (227) Achievable hole tolerance H8−H9 Drilling depths: 12−30 × drill diameter Clamp with high precision chucks only A wide range of workpiece materials Conventional drilling, cross holes, angled faces Automotive: crankshafts, engine blocks, cylinder heads Steel Stainless steel Cast iron Non-ferrous metals Product variants



*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.