The SM 7864 Alternator Rotor Assembly is a heavy-duty industrial electrical component specifically engineered for the 24-Volt Bosch-style (B. Type) charging systems found in the New Model (N/M) JCB heavy machinery. This rotor is designed to meet the rigorous demands of the latest JCB EcoXcellence and 4DX series, providing the high-amperage 24V output required for advanced telematics, hydraulic control units, and heavy-duty lighting systems.