Hacksaw blade is used to cut the metals and plastic
components such as round bar, PVC pipes. Hacksaw blades are
available in market, you just need to buy Hacksaw according
to your needs and application. This article will guide about
Basic terminology of hacksaw blade, Material used for hacksaw
Blades, Designation for Hacksaw blades which useful while
buying the blade from the market. This guide also helpful for
making final year project report of this projects
Pedal Operated Direct Simple Hacksaw
Fabrication Of Pedal Powered Dual Chain
Terminology used in Hacksaw blade:
For the purpose of this standard, following definitions shall
apply (see Fig.).
Fig. Terms Relating to Hacksaw
passes through the centres of the pin holes.
Pin Hole-The hole at each end of the blade
by means of which the blade is held and tension when in
use. The pin holes are normally located on the centre
line of the blade.
Teeth-The serrations formed across the
thickness of the blade to provide cutting edges.
Toothed Edge-The longitudinal edge along
which the teeth have been formed.
Cutting Edge-The edge of the face intended
to perform cutting. It is formed by the intersection of
the flank and the face.
Face-The surface of the tooth over which
the chip flows.
Flank-That surface over which the surfaces
produced on the work piece pass. It extends to the root
Root Radius-The radius connecting the face
of the tooth and flank of the preceding tooth.
Gullet-The space bounded by the face, root
radius and flank of a tooth, which permits chip removal.
Back Edge-The longitudinal edge parallel to
the toothed edge.
Side-The flat surface between the toothed
edge and the back edge.
Set-The projection of teeth from the side
of the blade, to provide cutting clearance.
transverse setting or staggering of groups of teeth.
Wavy Set-The transverse setting or
staggering of groups of teeth in the wave form.
Nominal Length-The dimension between the
centres of the pin holes, measured along the centre line of
Overall Length-The dimension between the ends
of the blade measured along its centreline.
Width-Width is the overall distance between
the toothed edge and the back edge.
Thickness-The distance between the two sides
of the blade body, excluding any set.
Pitch-The distance between the adjacent
The dimensions of hand hacksaw blade and machine hacksaw
blade shall be as given below.
MATERIAL USED FOR HACKSAW BLADES
Bi-metal High-Speed Steel
Low Alloy Steel
TYPES OF HACKSAW BLADES
1) All Hard Blade (Type A)
to the pin holes.
Flexible Blade (Type B)
3)Flexible Centre Blade (Type C)
length of toothed edge and the back edge with the
of the blade in soft condition and the back edge either
soft or hard.
Back Blade (Type D)
edge, the remainder being spring tempered.
Blade (Type E)
Manufactured that it will resist breakage but if
occur, it will not fragment into more than two pieces.
DESIGNATION OF HACKSAW BLADES:
Hacksaw blades shall be designated by the name,
type,nominal length, width, thickness, pitch, number of
this standard and the symbol for material.
A hand hacksaw blade of Type A having nominal
L= 300 mm; width,
a = 12.5 mm; thickness,
b = 0.63 mm; pitch,
P = 1.0 mm conforming to this
standard and made from low alloy steel (LA) shall be
Hand Hacksaw Blade, A 300x 12.5 x 0.63 x 1.0 IS
A machine hacksaw blade of Type A having nominal
L= 400 mm; width,
a = 32 mm; thickness,
b = 1.60 mm; pitch,
P = 2.5 mm; conforming to this
standard and made from high-speed steel (HS) shall be
Machine Hacksaw Blade, A 400x 32 x 1.60 x 2.5 IS
A machine hacksaw blade of Type A, having nominal length, L
= 400 mm; width, a = 32 mm; thickness, b = 1.60 mm; pitch,
P = 2.5; mm made from hi-metal HSS conforming to this
standard shall be designated as:
Machine Hacksaw Blade, A 400 x 32 x 1.6 x 2.5 IS