Hoja de sierra de calar Bosch T 321 BF Speed para metal aluminio epoxi bimetal

The Bosch T 321 BF Speed for Metal jigsaw blade is a bi-metal (BIM) blade engineered for fast, straight cuts in metal, aluminium and epoxy-coated sheet. Its patented back-taper body and thin kerf reduce cutting resistance, while an aggressive patented tooth geometry and milled wavy-set teeth are optimized for cutting metal sheets, medium-thick pipes and open metal profiles. The blade combines a fully hardened high-speed steel tooth strip with a flexible carbon steel body to increase durability and minimize breakage. This long-length blade (132 mm) with a fine 2 mm tooth pitch is suitable for pipes and profiles with wall thicknesses of 2.5–6 mm and diameters up to 65 mm. Compatible with jigsaws using T-shank clamping systems.

Advantages

The bi-metal construction pairs a hardened HSS tooth strip with an elastic carbon steel body for both wear resistance and breakproof performance. The patented thin-kerf, back-taper design and aggressive tooth geometry deliver high cutting speed and efficient material removal in metal applications. Milled, wavy-set teeth improve chip clearance and cutting stability when working with sheet metal and profiles. The 2 mm tooth pitch provides a balance between cutting speed and surface finish for medium-thickness metal work.

Suitable for

• Cutting thin sheet metal and aluminium panels
• Cutting epoxy-coated sheet materials
• Cutting medium-thick metal pipes (wall thickness 2.5–6 mm)
• Cutting open metal profiles and sections up to 65 mm diameter
• Use with jigsaws that accept T-shank blades

Key specifications

• Brand: Bosch
• Model / MPN: 2608636707
• EAN: 3165140597012
• Material: Bi-metal (HSS tooth strip + carbon steel body)
• Overall length: 132 mm
• Tooth pitch: 2.0 mm (fine)
• Suitable wall thickness: 2.5–6 mm
• Max pipe/profile diameter: up to 65 mm
• Shank type: T-shank
• Pack quantity: 5 blades (per summary description)

How to use

Install the blade in a compatible jigsaw with a T-shank clamping system, ensuring the teeth face the workpiece and the blade is securely seated. Use steady feed pressure and allow the blade to cut at its own pace to prevent overheating and premature wear. For straight cuts in metal, set the jigsaw for minimal orbital action (if adjustable) and maintain a consistent cutting speed. Clamp the workpiece firmly and support any long sections of pipe or profile to prevent vibration and ensure an even cut.

Recommendations

Use cutting fluid or a light lubricant when cutting thicker sections or harder alloys to extend blade life and improve cut quality. Replace the blade when cut quality declines or if the blade shows visible wear or damage. Store blades in a dry place to prevent corrosion.