Spareinnsatser

Spareinnsatser are replacement inserts used in cutting tools and tool holders in metalworking. They are replaceable tips that wear during cutting and are swapped to maintain cutting performance, accuracy, and surface finish. In production environments, spare innsatser are kept in inventory to minimize downtime when a tool edge dulls or a insert is damaged.

Inserts come in a range of geometries, materials, and coatings. The most common are carbide inserts, but ceramic, CBN, and PCD options are also used for specific applications. Coatings such as TiN, TiCN, or Al2O3 are applied to improve hardness, reduce wear, and lower friction. Shapes and sizes are standardized by industry guidelines, and many inserts are identified by codes that describe geometry, tolerance, and seat size. The grade or coating type communicates performance characteristics, guiding selection for workpiece material, cutting speed, feed, and depth of cut.

Application and selection considerations include tool holder compatibility, the material being cut, desired surface finish, and production economics. Inserts are chosen to balance life span, cutting efficiency, and cost per part. They are replaced when the cutting edge shows wear, chipping, or when performance falls below required tolerances.

Handling and storage practices emphasize keeping inserts dry, clean, and organized to preserve dimensions and coating integrity. Proper labeling and batch traceability support quality control and procurement. In practice, spareinnsatser form a key part of maintenance and inventory management in metalworking operations.