29557883 RearPlanetary Allison spare parts

29557883 RearPlanetary Allison spare parts

The Allison 29557883 rear planetary gear set is precisely matched to the Allison 1000/2000/3000/4000 series heavy-duty automatic transmissions, compatible with heavy-duty commercial vehicles, mining wide-body trucks, engineering dump trucks, and long-haul tractors from brands such as Mercedes-Benz, DAF, Peterbilt, and Volvo that use Allison transmissions. As the core transmission mechanism at the rear of the transmission, it directly links with the transmission main shaft, output shaft, and clutch assembly, playing a crucial role in power reduction and torque increase, and gear shifting. Through the precise meshing of the sun gear, planet gears, and ring gear, it smoothly transmits engine power to the output shaft, achieving speed and torque conversion between different gears, making it particularly suitable for demanding operating conditions involving heavy loads, high torque, and frequent gear shifts. With original factory design dimensions and zero deviation in meshing accuracy, it is the preferred original factory replacement part for transmission system repair and fault replacement.

Core technical parameters

–Model: 29557883
– Product Name: RearPlanetary
– Operating temperature: -40°C to +150°C (short-term peak 160°C)
– Product weight: 7.6 kg
– Product Type: Original equipment manufacturer (OEM) rear planetary gear set, complete set; adopts an integrated planetary transmission structure, including core components such as sun gear, planet gears, planet carrier, ring gear, and needle roller bearings.
– Compatible Systems: Allison 1000/2000/3000/4000 series heavy-duty automatic transmissions; compatible with the rear drive systems of transmissions in heavy-duty commercial vehicles, mining trucks, engineering vehicles, and municipal vehicles, allowing for precise linkage with the transmission main shaft, output shaft, and high/low gear clutches.
– Suitable operating conditions: long-distance heavy-load high-speed driving, mountain steep slope driving, high-load operation in mining areas, heavy-load start-up of engineering vehicles; can work stably in harsh environments such as high temperature (transmission oil temperature 120°C), low temperature (-40°C), high torque, frequent shifting, and vibration.

Product Advantages

1. Precise original factory fit, efficient repair: 100% matching Allison 29557883 original factory specifications, zero error in gear meshing accuracy, size, and mounting hole position; the whole set is pre-assembled and can directly replace the old gear set without disassembling the gearbox assembly, which greatly reduces repair time and cost.
2. High-strength material, strong load-bearing capacity: Carburized alloy steel gears + precision grinding process, which are wear-resistant, impact-resistant, fatigue-resistant, and have a large torque capacity. They can withstand heavy load and high torque transmission impact for a long time, and their service life is more than 1.7 times that of ordinary gear sets.
3. Precise meshing and smooth transmission: The gears are precision ground, and the meshing clearance is controlled within 0.02-0.05mm, resulting in smooth operation, low noise, and no transmission jamming or abnormal noise; effectively improving the smoothness of gearbox shifting, reducing wear on related components, and ensuring efficient and lossless power transmission.

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