29507729 Bearing Allison spare parts

29507729 Bearing Allison spare parts

Allison 29507729 bearings, also known as Allison dedicated transmission bearings or gearbox precision bearings, are core rotary transmission components of Allison gearboxes. Specifically designed for Allison 3000/4000 series and off-road series gearboxes, they are core components for Allison gearbox overhauls and routine maintenance. Widely used in the rotating parts of transmission systems in heavy trucks, construction machinery, oilfield equipment, and off-road vehicles, they bear radial and axial loads. They are crucial for ensuring smooth power transmission and reducing equipment rotational failures, making them a high-performance, cost-effective choice for industrial equipment maintenance. Relying on Allison’s superior manufacturing processes and reliability, they are widely recognized in the industry.
As the “rotational core hub” of the transmission system, the Allison 29507729 bearing’s core function is to connect the transmission gears, shafts, and other core rotating components, precisely transmit power, bear radial and axial loads, reduce frictional losses during component rotation, and ensure smooth, jam-free, and noiseless operation of rotating parts. It also serves a positioning and support function, ensuring the coordinated operation of internal transmission components and further protecting the safety of critical components such as gears, valve cores, and shafts, indirectly reducing overall equipment maintenance costs.

Core technical parameters:

– Product Model: Allison 29507729
– Material Specifications: GCr15 high-carbon chromium steel, one-piece forging; conforms to ISO mechanical transmission bearing production standards, GB/T 3077-2015, and GB/T 308 specifications, meets Allison’s original transmission requirements, and aligns with high-end bearing material selection standards.
– Surface treatment: Carbonitriding (temperature 820-860℃, diffusion layer depth 0.1-0.8mm) + shot peening, hardness up to HRC 58-62, surface compressive stress 200-400MPa, excellent wear resistance, corrosion resistance, and fatigue resistance, equipped with a sealed structure to prevent dust and impurities from entering.
– Dimensions: Precisely fits Allison original specifications, standard inner diameter 45mm, outer diameter 85mm, thickness 20mm (please consult customer service for detailed dimensions), suitable for installation on rotating parts of gearboxes, precision level P6, surface roughness Ra0.1-0.025μm.
– Rated performance: Operating temperature range -40℃~150℃, suitable for complex high and low temperature environments; rated dynamic load ≥52kN, rated static load ≥38kN, excellent load-bearing capacity; operating noise ≤55dB, smooth operation without vibration, low coefficient of thermal expansion, dimensional stability at high temperatures, and retained austenite content <10%.
– Compatible Equipment: Allison 3000/4000 series and off-road series transmissions, various heavy-duty trucks, construction machinery equipment, oilfield equipment, and off-road vehicle transmission systems.

The Allison 29507729 bearing is designed specifically for the rotary transmission needs of Allison gearboxes. Utilizing precision machining, high-quality GCr15 material, and professional surface treatment technology, it balances practicality, reliability, and cost-effectiveness. It perfectly replaces original bearings and is compatible with various Allison rotary transmission components, completely resolving maintenance pain points such as poor compatibility, easy wear, insufficient load-bearing capacity, and high operating noise associated with general-purpose bearings. Whether purchased in bulk for equipment overhauls, routine maintenance, or for single-unit emergency replacement, this product provides stable and reliable rotary transmission protection, ensuring long-term, safe operation of equipment.

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