|
H.S.S COMBINED DRILL &
COUNTERSINK (CENTRE DRILL)
To IS, BS, DIN & ISO Standards
|
Form A
Type 60° angle
|
Shape A
Traditional center bore without protection, with straight surfaces
|
Form B
Type 60° & 120° angle
|
Shape B
With conical potective counter sinking & straight race surfaces.
|
Form R
Radius Type
|
Shape R (radius) is a centre bore of bow
shaped form, resulting in an angular race surface which compensates for any differences in
angle of the points of the lathe, or axial differences (contrary to shape A ). In
addition, bores of shape R can also be used as bores with protected
counter-sinking. |
Long Series Centre Drills
Standard included 60° angle
|
|
Single Flute Counter
Sinks in 60°, 82°, 90°, 100° angles |
|
