Starrett 20731 Welded Bandsaw Blade 4-6 Tpi Bi-metal

Product Description

The STARRETT 20731 is a welded bi-metal bandsaw blade engineered for continuous cutting of ferrous and non-ferrous metals in industrial and production shop environments. Measuring 150 inches long and 1.25 inches wide with a 0.042-inch thickness, this blade mounts on horizontal and vertical band saws designed for that loop length. The cutting edge runs a 4 to 6 TPI variable pitch pattern with a raker tooth set and positive rake angle, reducing vibration and harmonic chatter during the cut. The tooth tips are high speed steel, bonded to a flexible back for fatigue resistance through repeated flexing around the saw wheels. Blade weight is 5.5 pounds.

This blade is part of the Starrett Intenss PRO series, targeting ferrous and non-ferrous metal cutting in manufacturing, fabrication, and maintenance shops. The variable pitch tooth spacing breaks up resonance when transitioning between solid stock, tubing, and structural sections. The straight tooth form and positive rake angle deliver an aggressive, chip-clearing cut suited to carbon steel, alloy steel, aluminum, copper, and similar materials. It is appropriate for production environments where blade life and consistent cut quality on metal workpieces are the primary requirements. No contour cutting application is intended for this blade.

Key Features

• Bi-metal construction with high speed steel tooth tips bonded to a flexible alloy back for extended blade life
• 4 to 6 TPI variable pitch reduces vibration and harmonic noise during cutting
• Raker tooth set with positive rake angle promotes aggressive chip evacuation
• Straight tooth form suited for ferrous and non-ferrous metal stock including solid bar, tubing, and structural shapes
• Flexible back construction resists fatigue cracking through continuous wheel flex cycles
• Welded loop construction eliminates mechanical joints for smooth, uninterrupted blade travel

Compatibility

Designed for band saws accepting a welded loop blade 150 inches in length and 1.25 inches in width. Verify wheel spacing, blade guides, and drive wheel capacity before installation. Suitable for machines configured for ferrous and non-ferrous metal cutting applications.

Installation Notes

Blade installation should be performed by a qualified technician with the band saw fully de-energized and locked out per OSHA lockout/tagout procedures. Wear cut-resistant gloves when handling the coiled or uncoiled blade. Confirm proper blade tension and guide bearing alignment before resuming operation, following the saw manufacturer's tensioning specifications. Do not exceed the blade speed rating for the material being cut.