TPT November 2008

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91 November 2008 ›
Cutting, Sawing & P rofiling Technology
Product advancement in one-way
cold saw blades
Kanefusa Corporation, Japan, is a leading manufacturer of
saw blades and industrial machine knives. With annual sales of
over US$160 million and 4 per cent spent on R&D activities, the
company has pioneered cold sawing technology using one-way
saw blades.
This technology is claimed to be superior to band and metal saws,
leading to increasing popularity among manufacturers of automotive
parts or machine elements (such as bearings). On average, it is
claimed that a cold sawing machine can replace 3 band or metal
saws. This is possible due to the cut cycle times of one-way saw
blades, which are significantly faster. They are capable of outlasting
band, metals and grind-able saw blades.
One-way saw blades are tipped with very durable grades of cutting
edge materials, such as cermets or coated tungsten carbides, which
are difficult to grind. The tooth geometry of these saw blades allow
them to perform better and cut cleaner. The geometry is so unique
that they cannot be reground on conventional grinding machines.
It is even possible to run
the saw blade until the
teeth come off, without
concern of damaging
the saw blade. Another
tremendous advantage of
the one-way saw blades
is their high process
reliability. One-way cold
saw blades cut solids
and pipes made from
low carbon, high carbon
and stainless steel.
Users often report a sharp
drop in performance after
grinding. In the case of
one-way saw blades,
performance is very consistent – blade-after-blade. Further advantages
are the minimal amount of lubrication required and the thin kerf
compared with grind-able cold saw blades.
Kanefusa has recently released the Ferro Max series of cold saw
blades, which has made rapid advances in the bearing industry.
Ferro Max has set a new performance standard due to a newly
developed coating, improved carbide grade and new blade design.
The Ferro Max Tube is designed to cut thin walled tubes. In addition
to a unique tooth shape and exclusive cutting edge material
(available only to Kanefusa), the company has produced a tipped
saw blade with a tooth pitch of 6.39mm.
At a user in the UK, a regular HSS-saw blade (D = 300mm, 180
teeth) cut 2,000 pieces of ST37 (D = 35mm, wall thickness =
1.8mm, tensile strength = 800N/mm2, cutting speed = 120m/min),
on a Bewo ECH108M machine, while Ferro Max Tube (D = 300mm,
150 teeth) cut over 20,000 pieces.
Kanefusa Corporation – Japan
Fax: +81 587 95 7226
Email: • Website :
 The Ferro Max Tube saw blade from
Kanefusa