Pitch Selector for Solid Material The pitch indicates the tooth spacing. The correct pitch choice ensures proper tooth pressure and adequate gullet capacity for chips. In most applications, a blade should engage no less than 3 teeth and no more than 25 teeth in the cut. SINGLE PITCH • Single pitch blades have uniform tooth spacing and shape. • Pitch (teeth per inch) is the number of gullets in a 1" (25.4 mm) span. • Use primarily for solids on rigid machines. MULTI PITCH • Multi pitch blades have a varying tooth spacing to reduce vibrations.
• Pitch designation hyphenates single pitches of coarsest and finest teeth. • Use for most sawing applications. • Best for structural materials or any vibration-prone application
1" 25.4 mm
4
6
4-6 Pitch
4 Pitch
Workpiece Size In Diameter for Bi-Metal Blades
1/8 1/4 3/8 1/2 1
2 2.5 3
4
5
6 8 1012141620242832364048
Inches
mm 3
6 10 15 30 45 60 80 100 120 150 200 250 300 350 400 500 600 700 800 900 1000 1200 10 - 14 8 - 12 6 - 10 5 - 8 4 - 6 3 - 4 2 - 3 1.4- 2 1 - 1.4 0.75- 1.25 Bi-Metal
Workpiece Size In Diameter for Tungsten Carbide Blades
Inches 6 8 10121416202428323640 mm 60 80 100 120 150 200 250 300 350 400 500 600 700 800 900 1000 3 - 4 2 - 3 1.3 - 2 2.5 3 4 5
Tungsten Carbide
Helpful Hints When Choosing Blades: • For fast, accurate sawing, choose the widest blade that fits the machine • For contour sawing, choose the widest blade that will cut the smallest part radius
• Consider a single pitch blade for fast cutting materials as single pitch blades have consistent tooth spacing • Use a multi pitch blade for most metal sawing applications where harmonics need to be controlled Better Results Will Come from Following DoALL Blade Expert Advice:
• Thinner blade option for longer flex life over small band wheels • Thicker blade option for straighter cuts under heavy feed force • Standard set for most applications • Wider (heavier) set to avoid pinching in highly stressed metals • Raker set for sawing ferrous and tough metals • Straight set for easily machined metals and non-metals • Straight raker set is used for all multi pitch blades
• Precision tooth shape for most sawing applications • Claw/hook tooth shape to increase beam strength and penetration • Buttress/skip tooth shape for woodworking applications • Neutral rake blade for most work narrower than two inches • Positive rake blade for wider, tougher-to-penetrate work
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