Skjærslager

Skjærslager is a bearing assembly used to support and guide a cutting blade in machinery that performs shearing or slicing operations. The component transfers cutting forces from the blade to the machine frame while allowing the blade to move with minimal friction and accurate alignment. Depending on the design, skjærslager can be a plain bearing or bushing, a rolling-element bearing (such as ball or cylindrical roller bearings) used in rotating blades, or a linear bearing used in sliding knife assemblies.

Applications include metal shears, guillotines, slitting lines, paper and textile cutters, and woodworking saw- and knife-cutting equipment. In rotary shears the bearing supports a rotating blade; in guillotines and straight knives the bearing supports a sliding cutter.

Key design considerations include load capacity, stiffness, misalignment tolerance, wear resistance, lubrication, and environmental conditions. Materials range from bronze and plain bearing composites to hardened steel for rolling bearings. Proper seal and lubrication help prevent contamination and premature wear.

Maintenance involves regular inspection of clearances and wear, lubrication according to the manufacturer's schedule, and replacement of worn bearings or sleeves to maintain blade accuracy and safety.

Terminology: skjærslager literally translates to cutting bearing in Norwegian; it is part of the cutting assembly and related to other bearing components such as blade holders and guides.