Drill Sleeves are used to adapt smaller morse taper shank tools to larger machine spindles.
The cocentricity and taper angles are precisely controlled which allows perfect locking and concentric movement to the tool held. These are available in two types:
A Grade - (Hardened and Ground).
Manufactured from case hardened Hi Tensile steel (20 MnCr5/SAE8620), these are fully hardened and are ground on the inside and outside.
Workshop Grade.
Manufactured from carbon steel, these are ground on the outside and have a reamed finish on the inside.
Permanent marking of size on the tang ensures convenience in use.