Cutter teeth

When sourcing cutter teeth, the most critical factor is the material composition, specifically the tungsten carbide grade used for the tip and the alloy steel used for the body. For high-impact environments, look for a cobalt content of 6% to 10% in the carbide to balance hardness and toughness. Additionally, ensure the body is made of 42CrMo or 35CrMnSi steel with a heat treatment hardness of HRC 40-45 to prevent snapping under high torque.

Compatibility is determined by the shank diameter and retention system. You must verify the diameter (e.g., 19mm, 20mm, 25mm, or 30/38mm stepped shanks) and the type of retaining ring or clip used. It is highly recommended to request technical drawings or CAD files from the supplier to match the gauge and pitch of your cutting drum or boring head to avoid premature wear on the tool holders.

To ensure reliability, prioritize suppliers who hold ISO 9001:2015 certification for quality management. For mining and construction tools, ask for material test reports (MTRs) that confirm the chemical composition and ultrasonic flaw detection results to ensure there are no internal cracks. If the products are for the European market, ensure they meet relevant CE machinery safety directives where applicable.

Cutter teeth are specialized by application: Road Milling Teeth require high abrasion resistance for asphalt; Foundation Drilling Teeth (bullet bits) need high impact resistance for rock and concrete; and Trenching/Mining Teeth require a balance of both. For hard rock (over 60MPa), you must select teeth with a large-diameter carbide tip and a reinforced collar to protect the tool holder from 'washing' or erosion.

The biggest risk is material substitution, where a supplier uses lower-grade recycled carbide instead of virgin powder. This leads to a 50% reduction in service life. To mitigate this, use Made-in-China.com's 'Audited Supplier' reports to verify the factory's production capacity and request a pre-shipment inspection (PSI) to conduct random hardness tests on the carbide tips.

Cutter teeth are high-density, heavy items. For orders exceeding 500kg, Sea Freight (LCL or FCL) is the only economically viable option. Ensure the supplier uses seaworthy packaging, such as reinforced plastic buckets or wooden crates with anti-rust oil coating and VCI (Volatile Corrosion Inhibitor) paper, to prevent oxidation during long-term maritime transit.

Focus on the price-per-meter or price-per-hour of service life rather than just the unit price. Negotiate for tiered pricing based on annual volume; for example, a 10-15% discount is standard for orders exceeding 5,000 pieces. Additionally, request a wear-guarantee clause where the supplier compensates for batches that fail significantly below the agreed-upon performance benchmarks.

Always use Secure Payment services provided by platforms like Made-in-China.com to ensure funds are only released after proof of shipment. Regarding trade policy, check the HS Code (typically 8207.19) for specific import duties in your country, as some regions impose anti-dumping duties on certain steel and carbide products from specific origins.