Starrett 20649 Welded Bandsaw Blade 3-4 Tpi Bi-metal

Product Description

The STARRETT 20649 is a welded bi-metal bandsaw blade engineered for cutting ferrous and non-ferrous metals in industrial and shop environments. Measuring 138 inches long and 1.25 inches wide with a 0.042-inch thickness, this blade fits standard vertical bandsaws used in metal fabrication and production cutting. The variable pitch tooth pattern at 3 to 4 TPI reduces harmonic vibration during the cut, extending blade life and improving surface finish on structural steel, pipe, tube, and solid bar stock. High speed steel teeth are electron-beam welded to a flexible alloy steel back, delivering durability in demanding cut cycles. Licensed HVAC, pipefitting, and fabrication shops will find this blade suitable for a wide range of metal-cutting applications.

The STARRETT 20649 is part of the Intenss PRO series, designed for variable-pitch metal cutting on vertical bandsaw machines. It is suited for ferrous metals such as structural steel, angle iron, and steel tubing, as well as non-ferrous metals including aluminum, brass, and copper. The raker tooth set and positive rake angle promote aggressive chip clearance and efficient cutting action, making this blade appropriate for production environments where consistent throughput is required. This blade is sold as a single welded loop, ready to install without additional cutting or joining.

Key Features

• Variable pitch 3 to 4 TPI pattern reduces vibration and noise during cutting
• Bi-metal construction with high speed steel teeth bonded to a flexible alloy steel back
• Raker tooth set with positive rake angle for aggressive chip evacuation
• Straight tooth form optimized for consistent cross-section cuts in metal
• Flexible back type resists fatigue and extends service life on continuous-duty saws
• Compatible with ferrous and non-ferrous metal applications

Compatibility

Designed for vertical bandsaw machines accepting a 138-inch blade loop that is 1.25 inches wide. Suitable for cutting ferrous metal and non-ferrous metal workpieces as specified by the manufacturer.

Installation Notes

Bandsaw blade installation should be performed by a qualified technician following the saw manufacturer's guidelines. Disconnect and lock out electrical power to the bandsaw before removing or installing any blade. Verify blade tension and wheel tracking according to the machine manufacturer's specifications before resuming operation. Always wear cut-resistant gloves when handling bandsaw blades, as welded loop edges are sharp.