Complete ZM-120U Travel Differential Assembly (Without Wheels)

Complete ZM-120U Travel Differential Assembly (Without Wheels) - ZM120 06.100.000-05

The ZM120 06.100.000-05 complete travel differential assembly is a fully equipped, factory-centered rear running axle designed to ensure self-propelled movement, high maneuverability, and automatic torque distribution between the driving sides of ZM-120U grain throwers (as well as ZMB hopper modifications and upgraded ZM-60U and ZM-90U models). This unit implements a modern gearless travel drive scheme-it mounts onto the rear section of the machine frame and operates in tandem with an independent drive gearmotor.

This kit is supplied without pneumatic wheels (including only outgoing mounting hub-flanges with a bolt pattern for Tavria R13 pneumatic rims)-this delivery format serves as a rational solution during capital repairs or complete running gear modernization. The customer receives a new factory running axle in full assembly and can mount existing pneumatic wheels with flanges onto it or purchase them separately to suit specific needs.

Technical Specifications and Composition of the ZM-120 Axle Differential Unit

• Catalog number - ZM120 06.100.000-05
• Application - rear running axle for ZM-120U, ZMB-90U, ZMB-120U grain throwers, as well as retrofit kits for other grain thrower series
• Drive type - gearless travel drive (powered by an independent gearmotor via a chain drive connected to the differential sprocket)
• Central unit design - sealed cylindrical drum (oil bath) housing a planetary bevel gear group on the axle
• Factory running axle assembly composition:
  
  1. Complete central drum (ZM120 06.100.001 - a thick-walled housing with sealed cast-iron covers (ZM120 06.100.004-05) and an M16 drain plug (OVB 6023)
  2. Drive sprocket with cover (ZM120 01.460.05-05) - an integral cast-iron chain sprocket featuring an integrated bearing chamber for a double 180206 bearing package
  3. Complete planetary cross spider assembly (ZP 07.110.000) - steel housing ZP 07.609, hardened ZP 07.608 pins, ZM 07.605 planet gears (z=17), and ZM 07.105 / ZM 07.105-01 cermet bushings
  4. Half-axle bevel gear group - two driven bevel gears ZM 07.603-05 (z=28, m=3.5) equipped with a set of compensation adjustment shims
  5. Complete left half-axle (ZM120 06.120.000-05) - continuous hardened Ø30 mm shaft extending from the differential to the left wheel
  6. Right output drive line - short right half-axle (ZM120 06.110.000-05), connecting flange (ZM120 06.140.000), VAZ elastic damper coupling (2101-2202120), and complete right long shaft (ZM120 06.130.000)
  7. Bearing support assemblies - external H 026.058 cast-iron housings featuring spherical double-row 11206 bearings and covers + an additional UCP206 pillow block housing bearing
  8. Wheel hubs - two mounting flanges (ZM120 06.150.000) for T-shaped shaft fasteners featuring retaining plates (ZM120 06.100.009)
  
  
• Country of manufacture - Ukraine

Engineering Features of the ZM Rear Travel System with an Axle Differential

The design of the ZM120 06.100.000-05 running axle differs fundamentally from legacy systems featuring a self-propelled gearbox mounted on the frame. It provides a series of critical advantages during agricultural machinery operations on the threshing floor:

1. Adaptation for Gearmotor Drive and Axle Differential Relocation
   Instead of legacy gearboxes with two fixed gears, the modern system operates via an independent gearmotor, ensuring smooth starts without jerking and precise (stepless) travel speed adjustment. To preserve grain thrower turnability and maneuverability, the differential mechanism of the standard self-propelled travel system (travel gearbox) was relocated directly onto the axle into a separate sealed housing. Mechanically, this is an adapted bevel group of a classic differential, guaranteeing compatibility and interchangeability of internal spare parts (planet gears, pins, bushings, cross spider) with components from traditional ZM-60 machines.
2. Automatic Traction Force Redistribution
   The conical planetary mechanism on the axle automatically matches the rotational angular speeds of the left and right wheels during maneuvering. The machine operator no longer needs to stop the grain thrower and manually toggle wheel disconnection cam half-clutches, as was required on classic ZM-60 units.
3. Protection Against Vibrations and Shock Loads
   Utilizing a resilient elastic VAZ coupling (2101-2202120) between the drum output half-axle and the right intermediate shaft effectively dampens torsional vibrations and jolts during gearmotor startup or reversal. Double-row spherical 11206 bearings housed within H026.058 cast-iron housings, alongside the supplemental UCP206 housing bearing, compensate for and absorb frame micro-deflections when traveling across uneven terrain.
4. Smoothness and a "Smooth Ride"
   The unit is engineered to accommodate R13 automotive pneumatic wheels (Tavria 4x98 mm bolt pattern). Pneumatic tires absorb vibrations significantly better than rigid rubber bands, reduce rolling resistance when moving massive equipment, and protect grain piles from crushing upon impact.

Modernization and Retrofitting of ZM-60 / ZM-90 Grain Throwers

This complete travel differential serves as the foundational element for converting legacy grain throwers of classic series to a modern gearless drive layout. If your enterprise operates a grain thrower with a worn self-propelled gearbox on the frame, installing the complete ZM120 06.100.000-05 rear travel kit alongside a gearmotor and pneumatic wheels eliminates cumbersome mechanics, half-clutch disengagement levers, and persistent chain drive failures entirely. The new axle mounts onto standard frame seating locations, transforming the running gear into a modern, more easily managed travel system.

Associated Components and Repair Units

At Zavod Moroza, you can order both the complete ZM120 06.100.000-05 travel differential assembly (without wheels) and any individual replacement parts required for routine maintenance or repairs:

• Complete differential drum (housing) assembly (ZM120 06.100.001)
• Complete differential cross spider assembly (ZP 07.110.000) or bare cross spider (ZP 07.609)
• Sprocket with cover (ZM120 01.460.05-05) and side cast-iron covers
• Left long half-axle (ZM120 06.120.000-05) and right short half-axle (ZM120 06.110.000-05)
• Complete right shaft assembly (ZM120 06.130.000) featuring a VAZ elastic coupling
• Wheel mounting flanges (ZM120 06.150.000) and retaining plates (ZM120 06.100.009)
• Complete R13 pneumatic wheels (rim + tire + inner tube)

Please note design evolution and potential modifications! The specification detailed above corresponds to the contemporary factory assembly of the ZM120 06.100.000-05 running axle currently manufactured and installed on Zavod Moroza equipment. However, throughout grain thrower refinement, this unit has undergone multiple stages of modification, meaning alternative design solutions may exist on your machinery. Specifically, instead of R13 pneumatic wheels, solid rubberized Ø 500 mm wheels may be used (requiring a different mounting flange); the drive layout may feature two elastic couplings instead of one (altering shaft lengths accordingly); or two external housing bearings or an alternative drive sprocket might be implemented. Purchasing the complete running axle assembly entirely resolves component compatibility concerns; however, if you are sourcing replacement parts individually, these structural nuances must be accounted for. If you are uncertain regarding your specific rear travel version, call our engineers or send a photograph of the unit. Zavod Moroza specialists will help accurately identify your modification and select fully compatible parts.

Buying the Complete ZM-120U Travel Differential from Zavod Moroza

Regardless of whether you are executing a capital repair on an existing ZM-120U axle or planning a complete modernization of a legacy grain thrower by transitioning to a gearless travel drive, ordering the travel differential assembly directly from Zavod Moroza guarantees you receive a verified factory unit featuring precise alignment of all mounting parameters, a pre-greased bearing package, and a reliability warranty.

Require technical consultation regarding axle compatibility with your frame modification or assistance selecting a retrofit kit? Submit an inquiry on our website or call our managers. We will assist you in selecting the correct configuration and ensure prompt dispatch of the unit directly from the manufacturer's warehouse!