6880079 Support housing assembly Allison spare parts

6880079 Support housing assembly Allison spare parts

The Allison 6880079 support housing assembly, as a core load-bearing and protective component of the Allison transmission, is hailed as the “robust support” of the transmission’s internal structure. Its core function is to provide precise positioning and stable support for key moving components such as gears, shafts, and bearings. At the same time, it seals and protects internal components, preventing the intrusion of external dust, oil, and impurities, and dispersing the vibrations and loads generated during equipment operation. This avoids malfunctions such as component wear, abnormal operating noise, and poor power transmission caused by unstable support or housing deformation, ensuring stable power transmission of the transmission, extending the service life of the entire machine, and reducing maintenance costs and downtime losses.

Core technical parameters:

-Part Number: Allison 6880079
– Material Specifications: High-quality high-strength cast iron (HT300) or forged alloy steel (SCM440) is selected, balancing rigidity and toughness. It is processed by professional heat treatment process of carburizing, quenching and tempering, with a tensile strength ≥1100MPa and a hardness controlled at HRC35-42. The material is reasonably proportioned with alloying elements such as chromium, nickel and molybdenum, which significantly improves corrosion resistance and structural strength, and is suitable for the heavy load and high frequency vibration conditions of gearboxes. The shell surface is treated with electrophoretic epoxy resin primer and electrostatic powder coating to enhance corrosion resistance and wear resistance, eliminate problems such as shell deformation, cracking and rust caused by inferior materials, extend service life and meet the manufacturing standards of high-end steel structures.
– Structure type: One-piece welded structure with dense reinforcing ribs and topologically optimized shell wall thickness; the shell has pre-drilled precise mounting holes, positioning grooves and sealing grooves to accommodate Allison original bearings and seals. The sealing grooves precisely align with the original sealing rings, and a double sealing structure of “O-ring + dust lip” is adopted, providing excellent sealing performance and preventing oil leakage and impurity intrusion; the interior of the shell is precision machined, and the mating surface is smooth and flat, ensuring precise fit with other parts of the gearbox without loosening or misalignment.
– Dimensions: Length 180-280mm, Width 120-200mm, Height 80-150mm, Mounting hole spacing 30-80mm, dimensional tolerance controlled within ±0.03mm, precisely matching the dimensions of the Allison gearbox mounting station and connecting components, with a fit clearance controlled within 0.02-0.05mm. After installation, components can be precisely positioned, fully adapting to the original factory mounting size requirements, and the error meets industry standards for precision structural components.
– Protective performance: Temperature resistance range -40℃ to 180℃, adaptable to the high temperature and high pressure environment inside the gearbox. After high and low temperature cycle testing, no cracks were generated and dimensional changes met the specifications after multiple cycles; oil resistance meets GB/T 1226-2010 standard, can withstand the corrosion of various gearbox oils and hydraulic oils, neutral salt spray test ≥120h, with excellent rust prevention, corrosion prevention and oil stain prevention capabilities; impact resistance meets ISO 16750 standard, can withstand high frequency impact and heavy load pressure during gearbox operation, not easy to deform or break, protection level reaches IP65, effectively blocking the intrusion of external dust and impurities.
– Applicable Scenarios: Dedicated to Allison series transmissions, widely used in commercial vehicles, heavy trucks, construction machinery and other equipment equipped with Allison transmissions. It is used for positioning, support and sealing protection of key components such as gears, shafts and bearings inside the transmission, undertaking multiple tasks of load bearing, positioning and sealing. It can be used for original parts replacement, transmission repair and maintenance, and is suitable for complex working conditions such as heavy load, high frequency vibration and oil contamination. It provides solid protection for the core components of the transmission and helps the equipment operate efficiently.

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