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CoroDrill 881 Secure holemaking for smaller diameters

A problem solver for holes below 24 mm (0.945 inch) diameter. This complementary tool is optimized for unstable conditions, providing increased process security and stability for smaller hole diameters.

 

Benefits

  • Excellent choice for unstable conditions
  • Robust drill-body concept and insert design
  • Good choice for non-rotating applications
  • Easy to use

 

Features

  • Strong insert design for improved reliability in unstable conditions
  • Reliable alternative for applications below 24 mm (0.945 inch)
  • Ideal design for non-rotating applications
  • Two cutting edges per insert
  • One all-round geometry for all material groups
  • Shot-peened drill body for better fatigue resistance
  • Large radial adjustment range
  • Back boring and chamfering possibilities

 

​Application

  • Diameter range: 14–23.50 mm (0.562–0.937 inch)
  • Low to medium feed applications
  • Unstable conditions requiring strong, robust inserts
  • Non-rotating applications
ISO application area
 

 

 

​Product range

Drill bodies
Coupling type ​ Drill dimension ​ Drill length​
Cylindrical ISO 9766, 20 mm​ 14.00-17.00 (mm)​  2-5 x D​
Cylindrical ISO 9766, 25 mm    ​ 17.50-23.50 (mm)​  2-5 x D​
Cylindrical ISO 9766, 0.75 inch    ​ 0.562-0.656 (inch)​  2-5 x D​
Cylindrical ISO 9766, 1 inch   ​ 0.687-0.937 (inch)​  2-5 x D​
Cylindrical US (P shank)   0.75 inch ​ 0.562-0.656 (inch)​  2-5 x D​
Cylindrical US (P shank) 1 inch    ​ 0.687-0.937 (inch)​  2-5 x D​
Coromant Capto C4, C5, C6    ​ 14.00-23.00 (mm)​  2-5 x D

 

Inserts
Drill dimension, mm (inch) Insert size Geometry Central insert grade Peripheral insert grade
14.00-17.00 (0.562-0.656) 2​ GM1 GC1044, GC1144 GC1044, GC1144
17.50-20.50 (0.687-0.812) 3 GM1 GC1044, GC1144 GC2044, GC4044, GC4024
21.00-23.50 (0.875-0.937) 4​ GM1 GC1044, GC1144 GC2044, GC4044, GC4024
 
 
 
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