ZM120 06.100.004-05 Cover (Right ZM-120U Travel Differential Cover)

ZM120 06.100.004-05 Cover (Right ZM-120U Travel Differential Cover)

The ZM120 06.100.004-05 cover is a component of the right side of the central drum within the ZM120 06.100.000-05 travel differential. It is designed for installation on self-propelled grain throwers of the ZM-120U series, and is also applied during the retrofitting and modernization of running systems on other grain thrower modifications when transitioning to a gearless drive layout featuring an independent gearmotor.

The component combines the functions of an oil bath sealing flange and a bearing assembly support housing. It mounts onto the right end of the ZM120 06.100.001 cylindrical housing and serves as a seating socket for two 180206 ball bearings and a reinforced oil seal-allowing the central differential drum to rotate freely around the right half-axle while maintaining the leak-tightness of the oil volume required to lubricate the internal bevel gears and planet gears.

Technical Specifications of the ZM120 06.100.004-05 Cover

• Catalog number - ZM120 06.100.004-05
• Installation unit - ZM120 06.100.000-05 travel differential (right side of the drum).
• Compatibility - ZM-120U grain throwers and upgraded gearmotor travel systems.
• Material - high-quality SCH 20 cast iron.
• Design execution - cast flange with finish turning and boring of internal and end surfaces.
• Seating parameters - internal bore for two 180206 bearings (outside diameter 62 mm) and a 1-30x52-1 oil seal.
• Fastening method - flanged, using M8 bolted connections along the drum contour.
• Country of manufacture: Ukraine.

Design Features of the Right ZM-120U Travel Differential Cover

The high-rigidity cast-iron housing provides high mechanical strength and resistance to axial loads. The use of SCH 20 grey iron enables the component to effectively dampen vibrations from the chain drive and running gear, preventing deformation of the bearing sockets even during prolonged operation of the grain thrower on uneven threshing floor surfaces.

Precise turning and boring of the seating locations is performed on CNC machine tools in strict compliance with coaxiality and surface roughness tolerances. The deep internal bore is designed for the sequential press-fitting of two 180206 radial bearings-guaranteeing correct radial load distribution, preventing outer bearing race misalignment, and eliminating accelerated oil seal wear.

Leak-tightness and reliable oil bath sealing are achieved through the precise fit of the flange against the drum housing. The end surfaces of the cover undergo finish grinding, ensuring a tight, hermetic joint using oil-resistant sealant or a gasket. The outer neck of the cover is bored to accommodate the 1-30x52-1 reinforced oil seal and the ZM120 06.100.007 securing retaining plate (cover), reliably retaining liquid oil inside the differential and protecting the bearing chamber from dust and dirt ingress.

Associated Components for Assembly

When replacing a worn or damaged ZM120 06.100.004-05 cover for a complete bearing unit assembly, you may require the following elements:

• 180206 ball bearings (GOST 8882-75) - 2 pcs. (for press-fitting inside the cover)
• Reinforced oil seal (1-30x52-1, GOST 8752-79)
• ZM120 06.100.007 end retaining cover
• M8x30 mounting bolts, M8 nuts, and spring lock washers
• Right half-axle ZM120 06.110.000-05 and a set of adjustment shims

Buying the Differential Cover (ZM120 06.100.004-05) from Zavod Moroza

Zavod Moroza manufactures SCH 20 cast-iron covers in strict accordance with factory drawings, geometric tolerances, and casting technology. Our products undergo quality control of seating dimensions, guaranteeing hassle-free bearing press-fitting and exact alignment of mounting holes with the drum housing.

You can purchase the cast-iron cover separately for press-fitting with your own components, or order it in a fully assembled factory configuration complete with pre-installed bearings and oil seal. Call the provided numbers or submit an inquiry on our website. Our specialists will consult you regarding component compatibility and promptly arrange order dispatch directly from the manufacturer!