Starrett 20690 Welded Bandsaw Blade 4-6 Tpi Bi-metal

Product Description

The STARRETT 20690 is a welded bi-metal bandsaw blade from the Intenss PRO series, designed for continuous cutting of ferrous and non-ferrous metals. It measures 10 feet 10.5 inches in length and 0.75 inches in width, with a blade thickness of 0.035 inches. The variable pitch tooth pattern runs at 4 to 6 TPI and features a positive rake angle with a raker tooth set, a combination that helps reduce vibration and improve cut quality across a range of material profiles. The high-speed steel tooth tips are welded to a flexible bi-metal back, giving the blade durability under repeated load without the brittleness of an all-hardened blade. Licensed metal fabricators and maintenance machinists are the typical end users.

This blade is suited for production and job-shop environments where both ferrous metals such as structural steel and non-ferrous metals such as aluminum or copper alloy stock are cut on vertical or horizontal band saws. The variable pitch design helps manage chip load when cutting mixed cross-sections or irregular profiles. The straight tooth form and raker set make it a reliable choice for general-purpose contour and straight cutting in a metal-cutting shop environment. It is not configured for contour cutting applications that require a narrower blade width.

Key Features

• Bi-metal construction with high-speed steel teeth bonded to a flexible back for extended blade life
• Variable pitch at 4-6 TPI reduces harmonic vibration and improves surface finish on a range of metal cross-sections
• Positive rake angle promotes aggressive, efficient chip removal in metal-cutting applications
• Raker tooth set provides balanced cutting action suitable for solid stock and structural shapes
• Flexible back type resists fatigue cracking under continuous band saw operation
• Welded construction delivers a consistent, gap-free loop for smooth tracking on band saw wheels

Compatibility

Designed as an OEM-style replacement or aftermarket band saw blade for metal-cutting band saws that accept a blade loop measuring 10 feet 10.5 inches in length and 0.75 inches in width with a 0.035-inch thickness.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with band saw blade tensioning and tracking procedures. Power down and lock out the band saw at the disconnect before removing the old blade or installing the new one. Wear cut-resistant gloves when handling the blade, as the tooth edges are sharp. Verify wheel diameter, blade guide spacing, and blade tension specifications on the machine nameplate before running the saw.