Shanghai Mac Corporation is a leading slot wedge manufacturer and supplier.

A slot wedge is a key structural component installed at the openings of the slots in the stator or rotor iron core of an electric machine. Its primary function is to firmly secure and retain the windings within the slots, preventing them from loosening under electromagnetic forces and centrifugal stress. Its core characteristic lies in the diversity of materials, which includes non-magnetic materials like epoxy glass cloth laminates known for high mechanical strength and good insulation, magnetic composite materials capable of improving the magnetic circuit to reduce losses and noise, and high-strength metallic materials used in extreme high-speed environments. In terms of specific applications, general-purpose non-magnetic slot wedges are widely used in various small and medium-sized motors to ensure reliability; magnetic slot wedges are specifically employed to enhance the energy efficiency and acoustic performance of high-efficiency and variable-frequency motors; while non-magnetic metal slot wedges are critical components in high-speed generators and traction motor rotors, where they withstand immense centrifugal forces.

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