hp-Technik 12/24 coupling 0820666

The hp-Technik 12/24 coupling (article 543.505.002, manufacturer codes 0820666, 84139100) is a component used in the drive train of oil burners. In such systems, the oil pump is driven by the burner motor via a flexible or rigid coupling. This particular coupling connects the motor shaft to the pump shaft, transmitting torque while compensating for minor axial and angular misalignment between the two shafts. Couplings of this type are typically made from a durable elastomer or metal composite to absorb vibration and reduce wear on both the motor bearings and the pump shaft seal. They form part of the mechanical assembly that ensures reliable fuel delivery from the tank to the nozzle. When replacing a coupling in an oil burner drive, it is essential to match the bore diameters on both sides to the respective motor and pump shafts, as well as the overall length and the type of connection (keyway, clamping hub, or set screw). The torque rating must be sufficient for the pump’s working pressure and capacity. A failing coupling can cause noise, vibration, or a loss of drive, leading to burner lockout or incomplete combustion. Regular inspection of such couplings is advisable during scheduled maintenance. This coupling is listed within the oil filters, coils, tubes & hoses category, reflecting its role in the fuel handling side of the burner system. No specific compatibility with individual burner models or pump brands is implied by the catalogue data; selection should be based on physical dimensions and the required torque transmission.