29537435 Rear cover assembly Allison spare parts

29537435 Rear cover assembly Allison spare parts

The Allison 29537435 rear cover assembly, as an original factory integrated component for Allison transmissions, focuses on solving the core needs of sealing and preventing leakage at the end of the transmission, providing precise support for the output shaft bearings, and isolating external contaminants. It is widely used in the transmission assemblies of Allison’s full range of heavy-duty automatic transmissions and various heavy commercial vehicles, engineering and mining machinery. The products strictly adhere to the original manufacturer’s production standards, with full-process quality control from A356 aluminum alloy ingot selection, vacuum low-pressure casting, T6 solution treatment + artificial aging, five-axis precision milling of sealing surfaces, precision machining of bearing holes, to oil seal/gasket pre-installation, overall airtightness testing, and surface anti-corrosion treatment. This eliminates oil leakage, bearing noise, and component wear caused by defects in shell casting, insufficient sealing surface precision, and improper oil seal assembly, significantly reducing maintenance frequency and costs. The products are suitable for complex working conditions such as heavy loads, high-frequency start-stop, severe vibration, and high and low temperatures from -40℃ to 160℃, and comply with the processing and quality standards of GB/T 15114-2020, GB/T 9438-2013, and ISO 9001.

Core Technical Parameters：

– Product Model: Allison 29537435
– Product Material: Main body: A356-T6 cast aluminum alloy; Matching double-lip skeleton oil seal (nitrile rubber + steel skeleton), nitrile rubber sealing gasket, 45# steel locating pin.
– Mechanical properties: shell tensile strength ≥290MPa, yield strength ≥230MPa, elongation ≥8%, bearing housing hardness HB≥85
– Operating temperature: -40℃~160℃ (assembly withstand temperature; oil seal long-term operating temperature -40℃~120℃)
– Structure type: Transmission rear end integrated cover assembly
– Accuracy parameters: Sealing surface flatness ≤0.02mm/100mm, roughness Ra0.8μm; bearing bore coaxiality ≤0.015mm, form and position tolerance IT7 grade; overall airtightness 0.3MPa/5min no leakage.
– Suitable for: Allison 1000/2000/3000/4000 series automatic transmissions, and rear-end sealing and support for transmissions in heavy-duty trucks, construction machinery, mining machinery, and special vehicles.

We prioritize quality. Our Allison 29537435 rear cover assembly undergoes rigorous quality control, including material composition analysis, hardness testing, dimensional inspection, airtightness testing, and pressure resistance testing, achieving a 100% factory pass rate. Whether for major equipment overhauls and replacements or bulk purchases, this product perfectly fits original Allison transmissions without requiring additional customization or adjustments. It effectively prevents transmission oil leaks, dust and moisture intrusion, and bearing positioning misalignment, extending the service life of the transmission system and providing a solid guarantee for the long-term stable operation of heavy-duty equipment. It is the preferred integrated component for rear-end sealing support within the Allison parts system.

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