Cold Saw Blade Guide
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Rules-of-thumb and Good Advice
- Tooth pitch is measure as the distance from tooth tip to tooth tip. As a rule there should be 3-6 teeth in the cut.
- As a blade is resharpened, the tooth pitch is reduced. Therefore, retoothing can be necessary occasionally.
- The blade speed depends on the material to be cut. For the standard construction steel it should be about 50 rpm when using a 11″ blade.
- Feed is measured as the chip thickness per tooth per revolution (max. 0.1 mm – .004″) but is generally listed as inches per minute.
- Using the correct feed, the chips are bright, even in size and nicely rounded.
- Plenty of fluid must be used when cutting. Mixture 6-10%.
- Resharpened blades always have to be “run in”. Make 6-8 cuts with normal speed and about 25% of normal feed.
- If “pick up” occurs, the blade should always be dismantled and retoothed.
- Thorough cleaning of the blade and flanges before mounting is very important and the backlash in the device pins taken out. This can be done by putting slight pressure against the face of the tooth in a direction opposite to that of the saw rotation as the blade is being clamped.
- When purchasing new blades, it is important to be aware of the blade material, bore tolerance, possible surface treatment and side run out.
- Circular saw blades should always be resharpened on machines that secure an even tooth pitch. Resharpening with coolant improves the blade life.
- Tooth geometry must be adjusted to the work piece. For example when cutting stainless and aluminum, special ground blades for these materials should be used.
Selecting # of Teeth
# of Teeth Table
Speed, Feed & Tooth Angles
Special Grinding & Tooth Forms
Standard Tooth Forms: Image
Cutting Brass & Related Materials
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