Starrett 20639 Welded Bandsaw Blade Bi-metal Variable Pitch

Product Description

The STARRETT 20639 is a welded bi-metal bandsaw blade engineered for demanding cutting applications in metal fabrication and industrial environments. The blade measures 162 inches (13 feet 6 inches) in length, 1 inch in width, and 0.035 inches thick. It runs a variable pitch of 5 to 8 TPI, which reduces harmonic vibration during the cut and helps extend blade life. The tooth material is high speed steel set in a raker pattern with a positive rake angle. Licensed HVAC, plumbing, and mechanical contractors as well as metalworking professionals install and operate this blade on compatible bandsaw machines for cutting ferrous and non-ferrous metals.

The 20639 is part of the Starrett Intenss PRO series, which targets shops and service facilities cutting a range of metal stock including mild steel, structural steel, aluminum, copper, and similar materials. The variable pitch tooth configuration makes it suitable for interrupted cuts and varying cross-sections, allowing a single blade to handle diverse workpieces without a blade change. It is appropriate for both production cutting environments and job-site fabrication scenarios where consistent, accurate cuts in metal are required.

Key Features

• Bi-metal construction pairs a flexible back with high speed steel teeth for durability and heat resistance
• Variable 5 to 8 TPI pitch reduces vibration and harmonics for smoother cuts
• Positive rake angle promotes aggressive, efficient material removal in ferrous and non-ferrous metals
• Raker tooth set provides balanced chip clearance and consistent cut quality
• Part of the Intenss PRO series, designed for demanding production cutting cycles
• Welded construction for a continuous, properly tensioned loop ready to install

Compatibility

Designed as an OEM-style replacement or direct-fit welded bandsaw blade for bandsaws accepting a 162-inch blade length with a 1-inch blade width and 0.035-inch blade thickness. Suitable for cutting ferrous and non-ferrous metals.

Installation Notes

Installation should be performed by a qualified operator familiar with bandsaw equipment. Power down and lock out the bandsaw before removing the old blade or installing a new one, following OSHA lockout/tagout procedures. Verify wheel alignment, blade guides, and blade tension according to the machine manufacturer specifications before resuming operation. Wear cut-resistant gloves when handling the blade, as the high speed steel teeth present a laceration hazard.