Hoja de sierra de calar Bosch T 321 AF Speed for Metal bimetal 13,2 cm

The Bosch T 321 AF Speed for Metal jigsaw blade is a bimetal (BIM) blade designed for fast, straight cuts in sheet metal, thin-wall pipes and open metal profiles. It has a 132 mm overall length and a very fine tooth pitch (1.2 mm), allowing precise cutting of metal with 1–3 mm wall thickness and pipes/profiles up to 65 mm diameter. The blade’s construction combines a hardened HSS tooth strip with a flexible carbon steel body to provide both cutting hardness and break resistance. It is made for jigsaws with a T-shank clamping system and is sold in a pack of 5 pieces.

Advantages

The patented back-taper body and thin kerf reduce material resistance and enable higher cutting speeds, while the specialized tooth geometry with aggressive, milled wavy-set teeth improves cutting performance in metal sheet. The bimetal design (HSS teeth on a carbon steel body) increases durability and elasticity, lowering the risk of blade breakage and allowing cuts in standard-strength steel pipes and profiles. The long blade length facilitates cutting larger-diameter pipes and profiles up to 65 mm.

Suitable for (tasks / use cases)

Key specifications

How to use

Install the blade into a compatible jigsaw using the T-shank clamping system according to the jigsaw manufacturer's instructions. Secure the workpiece and set the jigsaw speed appropriate for metal cutting (moderate to high, depending on material). Guide the jigsaw steadily along the cut line without forcing the blade; allow the thin kerf and sharpened tooth geometry to advance the cut. For pipes or profiles, stabilize the workpiece to prevent vibration and ensure a straight cut. Replace the blade when cutting performance decreases or if the blade shows signs of damage.

Recommendations

Use cutting lubricant or coolant when cutting thicker or harder metal to extend blade life. Wear appropriate personal protective equipment (safety glasses, gloves, hearing protection) and clamp the workpiece securely. Match jigsaw speed to the metal type and thickness for best results.