Circular Saw Blade Bosch Multi Material 21 cm

The Bosch Multi Material Circular Saw Blade 21 cm is a round saw blade designed for cutting a variety of materials, including aluminium, non-ferrous metals, plastics, epoxy and wood. With a diameter of 21 cm and precision-ground carbide teeth configured in a HLTCG (High-Low Triple Chip Ground) geometry, the blade combines a dimensionally stable SK5 hardened steel core (> 40 HRC) with wear-resistant carbide tips to maintain cutting accuracy and edge life. Expansion slots in the body reduce vibration, lower noise and help control heat development during continuous use. The blade is compatible with Bosch circular saws and other tools that accept a 21 cm diameter blade and is suitable for professional and DIY tasks that require clean, precise cuts.

Advantages

The combination of a hardened SK5 steel core and precision-ground carbide teeth provides a balance of stability and cutting durability, while HLTCG tooth geometry improves performance on abrasive and mixed materials. Expansion slots reduce vibration and noise and contribute to cooler running, which helps preserve the blade’s edge. The 21 cm diameter and lightweight construction make it easy to handle and exchange, and the blade design supports clean, accurate cuts across multiple materials without the need to change blades frequently.

Suitable for

• Cutting aluminium and other non-ferrous metals
• Working with plastics and composite materials such as epoxy
• Crosscuts and rip cuts in wood where a multi-material blade is acceptable
• Mixed-material jobs where fewer blade changes are preferred

Key specifications

• Diameter: 210 mm
• Tooth geometry: HLTCG (High-Low Triple Chip Ground)
• Core material: SK5 hardened steel, > 40 HRC
• Tooth material: precision-ground carbide
• Features: expansion slots to reduce vibration and heat
• Weight: approximately 235 g

How to use

Mount the blade on a compatible circular saw following the tool manufacturer’s instructions, ensuring the arbor size and rotation direction match the blade markings. Secure the blade with the saw’s flange and tightening mechanism and check that guards and safety devices are correctly installed. Adjust cutting depth and speed according to the material: use slower feed rates and steady pressure for metals and harder plastics, and moderate feed for wood and composites. Allow the blade to reach operating speed before engaging the material and let the blade complete the cut without forcing it to avoid overheating or tooth damage. After use, inspect the blade for wear or damage and replace if teeth are chipped or the cutting performance degrades.

Lietošanas ieteikumi

Use suitable personal protective equipment, including eye and hearing protection and gloves. For cutting aluminium and non-ferrous metals, consider using cutting fluid or compressed air to reduce heat and clear chips. Avoid cutting reinforced concrete or masonry with this blade. Store the blade dry and protected from impacts to preserve the carbide teeth and steel core.