Metal-Cutting Saw Blades
Renlaw Cutting Tools has a separate department, RENSAW, which specializes in the manufacture of ferrous metal-cutting saw blades.
We stock a range of pre-hardened blanks in HSS-DMo5 and HSS-Co steel. With our two CNC saw-toothing machines, we are able to grind any tooth number and cutting-angle to suit your application.
Types of saw-blade teeth
Rensaw is able to manufacture tooling with the following standard tooth shapes:
Tooth type A
Recommended for fine pitches and non-ferrous cutting.
Tooth type BS
Has a breaker-slot – the best tooth shape to cut pipe on automatic machines.
Tooth type AW
Is the same as tooth A, with an added bevel to aid chip-evacuation.
Tooth type BW
The standard tooth shape for cutting sections and small solids
Tooth type B
Used on thin blades for cutting ferrous metals.
Tooth type HZ
Used in solid cutting or to cut thick-walled sections.
PVD coating options
Rensaw offers Metal Cutting blades with the following coatings:
Physical Vapor Deposition, or PVD, is a term used to describe a family of coating processes that result in a very strong bond between the coating and tooling substrate and tailored physical, structural, and tribological properties of the coating film.
Although all of our different coatings have some variation in their properties in order to augment their performance in specific applications, there are two main properties that are fundamental to each one of our coatings: high hardness and low coefficient of friction.
Higher hardness gives cutting tools much greater protection against abrasive wear, whilst a low coefficient of friction means that tools work with less force due to reduced resistance and the tendency of materials to adhere to the blade is reduced. In cutting applications, reduced friction means that less heat is generated during the machining process, slowing the breakdown rate of the cutting edge.
Tooth pitch guide
The accompanying chart can be used as a guideline, however as working conditions vary please contact our engineers to improve your metal cutting process.
While the cutting angles of a saw’s teeth are determined by the type of material being cut, the number of teeth is related to the saw’s diameter and the thickness of the section is cut.
If the pitch of the tooth is too small the tooth gullet will clog up with shavings, causing the teeth to break and material to weld onto the side of the blade. Conversely, too large a pitch can cause teeth to snag on the material resulting in broken teeth and reduced sharp-life.
Feeds and speeds
The relationship between feeds and speeds is important to ensure that one gets the best possible performance from your Rensaw blade.