REAMERS,
COUNTERSINKS &
COUNTERBORES
S O M T A P 1 2 C A T A L O G U E
78
Reamer Terminology
A
A
CUTTING LENGTH
OVERALL LENGTH
OVERALL LENGTH
CUTTING LENGTH RECESS SHANK LENGTH
BEVEL LEAD
ANGLE
B
B
DIAMETER
DIAMETER
TAPER LEAD
B
B
A
TAPER LEAD
ANGLE
SHANK
SQUARE
A
MORSE TAPER
SIZE OF
SQUARE
PRIMARY
CLEARANCE
ANGLE
SECTION A-A
CIRCULAR
LAND
CLEARANCE
ANGLE
NO CIRCULAR
LAND
FRONT END VIEW OF PARALLEL
MACHINE REAMER
CLEARANCE
ANGLE
CIRCULAR
LAND
SECTION B-B
FLUTE
CENTRE HOLE
RADIAL FACE
CUTTING EDGE
