ZM-120 Differential Compensation (Adjustment) Washers

ZM-120 Differential Compensation (Adjustment) Washers

The ZM-120 differential compensation washers are precision adjustment elements for the ZM120 06.100.000-05 travel axle, designed to set clearances, establish precise bevel gear meshing for half-axle gears and side gears, and eliminate axial shaft play inside the oil drum. They are utilized on self-propelled grain throwers of the ZM-120U series and their gearmotor-equipped modifications.

Within the differential kinematics, the meshing accuracy of bevel gear pairs directly impacts smooth movement, noise levels, and gear service life. The application of a compensation washer set with varying thicknesses enables precise adjustment of center-to-center and end distances during assembly or servicing, preventing accelerated wear or tooth chipping under load.

Technical Specifications and Types of Compensation Washers

• Application - ZM120 06.100.000-05 travel differential for ZM-120U grain throwers and their modifications
• Purpose - adjustment of axial clearances, setting the mesh of ZM 07.603-05 half-axle bevel gears and ZM 07.605 side gears, and compensating for bearing pack play
• Specification breakdown of the adjustment washer set:
   - ZP 07.401 compensation washer (-01 / -02 / -03 modifications) - 2 pcs. (for adjusting half-axle bevel gear mesh)
   - ZS4008-01 compensation washer - 2 pcs. (for adjusting clearances in bearing and support assemblies)
   - ZS4008-02 compensation washer - 5 pcs. (for precise stack selection of the required compensation thickness)
• Material - calibrated steel with high thickness precision
• Country of manufacture - Ukraine

Design Features and Engineering Role in the Assembly

Adjustment washers allow precise setting of the bevel gear pair mesh. Inside the sealed drum, the ZM 07.605 bevel side gears (z=17, m=3.5) operate in pairs with the ZM 07.603-05 half-axle bevel gears (z=28). Elements of the ZP 07.401 series with various thickness graduations are placed under the gear end faces, enabling tooth contact patch adjustment and complete elimination of backlash.

The set of components with varying thicknesses provides effective stack selection for bearing and shaft axial play. The ZS4008-01 and ZS4008-02 washers are designed to eliminate technological gaps between the differential housing, covers, and 180206 bearings. The ability to combine multiple washers (specifically up to 5 pcs. of ZS4008-02) compensates for cumulative manufacturing tolerances or component wear during prolonged operation.

The washers are manufactured from high-quality calibrated rolled steel with superior deformation resistance. They maintain a precise and stable thickness across their entire plane and operate in constant contact with liquid lubricant inside the filled drum, retaining their initial shape without flattening or deformation under significant axial loads.

Associated Components for ZM-120 Differential Assembly and Overhaul

During a major overhaul or differential adjustment along with the compensation washer set, the following parts are typically ordered and inspected:

• Complete ZP 07.110.000 differential cross spider assembly
• ZM 07.603-05 bevel half-axle gears (z=28, m=3.5) - 2 pcs.
• ZM 07.605 bevel side gears (z=17, m=3.5) - 2 pcs.
• Complete ZM120 06.100.001 differential housing assembly and covers
• 180206 ball bearings (6206 2RS) - 4 pcs.

Buying the ZM-120 Differential Compensation Washer Set from Zavod Moroza

By ordering the compensation washer set directly from Zavod Moroza, you receive a set of adjustment elements featuring strict thickness compliance and quality machining, enabling precise differential mesh tuning.

Contact our sales department via the provided phone numbers or submit an inquiry on our website. Our specialists will assist you in selecting the necessary washer set and associated components for your machinery and ensure prompt dispatch of spare parts directly from the manufacturer's warehouse!