29558647 Differential Pressure Switch Allison spare parts

29558647 Differential Pressure Switch Allison spare parts

The Allison 29558647 differential pressure switch, as an original equipment manufacturer (OEM) differential pressure monitoring component for Allison transmissions, focuses on solving the core needs of differential pressure monitoring and anomaly warning in the transmission hydraulic system and filtration system. It is widely used in the safety monitoring units of the transmission systems of Allison’s full range of heavy-duty automatic transmissions and various heavy commercial vehicles, engineering and mining machinery. The product strictly adheres to the original manufacturer’s production standards, from the selection of H59 brass raw materials, precision machining, silicone diaphragm molding, silver alloy contact assembly, and overall sealing and encapsulation, to differential pressure accuracy calibration, temperature and pressure resistance testing, and contact continuity testing, with full-process quality control. This eliminates problems such as monitoring errors, signal failures, and false alarms caused by inferior materials, insufficient machining precision, poor sealing, or poor contact. It accurately monitors differential pressure changes, and when filter blockage leads to increased differential pressure or oil leakage leads to decreased differential pressure, it quickly triggers dry contact signal feedback, linking the control system to achieve alarm or interlock protection. It is suitable for complex operating conditions such as heavy loads, high-frequency start-stop, severe vibration, and temperatures ranging from -30℃ to 120℃, and complies with the processing and quality standards of GB/T 2951.1-2008, ISO 9001, and CE, while also meeting the core testing specifications for industrial differential pressure switches.

Core Technical Parameters：

– Product Model: Allison 29558647
– Product Material: Main body is H59 brass; diaphragm is high-temperature resistant silicone; contacts are silver alloy; equipped with nitrile rubber seals and waterproof terminals.
– Monitoring performance: Differential pressure setting range 0.02~0.6MPa, adjustable on-site; monitoring accuracy ±2.5%, setpoint repeatability deviation ≤±1%, response time ≤80ms
– Operating parameters: Operating temperature -30℃~120℃, maximum allowable static pressure ≤10MPa, maximum operating pressure difference ≤0.6MPa
– Structure type: Mechanical differential pressure switch
– Accuracy parameters: Interface size 1/4″ SAE (7/16”-20UNF), contact resistance ≤50mΩ, sealing surface flatness ≤0.02mm
– Suitable for: Allison 1000/2000/3000/4000 series automatic transmissions, differential pressure monitoring of hydraulic and filtration systems in transmissions of heavy-duty trucks, construction machinery, mining machinery, and special vehicles.

We prioritize quality. Our Allison 29558647 differential pressure switch undergoes rigorous quality control, including material composition analysis, differential pressure accuracy testing, temperature and pressure resistance testing, sealing performance testing, and contact continuity testing, achieving a 100% factory pass rate. Whether for routine equipment maintenance and replacement or bulk procurement, this product perfectly integrates with the original Allison transmission monitoring system, requiring no additional customization or adjustments. It effectively monitors differential pressure changes in hydraulic and filtration systems, providing timely warnings of filter blockages, oil leaks, and other faults. It also links with the control system for safety protection, extending transmission lifespan and providing a solid guarantee for the long-term stable operation of heavy-duty equipment. It is a core and preferred component in Allison’s differential pressure monitoring system product line.

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