Rear wheel hub ZM 01.180

ZM 01.180 Wheel Hub for Grain Thrower Reverse Gear

The ZM 01.180 hub (ступиця) is the primary support-drive element of the ZP 01.220 reverse gear mechanism, serving as the main connecting link between the driving wheel and the power transmission of the grain thrower. This part is installed on the half-axles of the running gear and is an integral component of both classic machines (ZM-60, ZM-60A) and modern modernized units (such as the ZM-60U and ZM-90U produced by our factory). The rubber wheel disk is bolted rigidly to its square flange, bearing the entire weight of the rear section of the machine.

The main engineering feature of this hub, which cardinally distinguishes it from standard "blind" parts (such as the left ZM 01.104 hub on older models), is the presence of special massive jaws on the end face. Thanks to this geometry, the hub operates in an inseparable pair with the moving ZM 01.102 half-clutch, forming the drive control mechanism. In operating mode, under spring pressure, the jaws of the clutch and the hub tightly engage with one another, transmitting torque from the gearbox to the wheel. When the operator needs to manually roll the unit or take it in tow, they pull the half-clutch back and break this engagement. The released ZM 01.180 hub begins to function as a regular bearing assembly—allowing the wheel to rotate freely around the axis, reliably protecting the self-propelling gearbox from overloads and destruction.

Technical Specifications of the ZM 01.180 Hub

• Catalog number: ZM 01.180
• Application: ZM-60, ZM-60A, ZM-60U, ZM-90U
• Installation assembly: Rear drive ZP 01.220
• Part type: Support-drive hub with jaws
• Equipment: Two internal cermet (powder metal) bushings (NEN 400003)
• Weight: 3.318 kg

The ZM 01.180 hub features a complex yet reliable spatial form, as it simultaneously performs the functions of both a load-bearing support and a transmission element. Its base is a robust square flange with four through-holes at the corners. The disk of the driving rubber wheel, which supports a substantial portion of the grain thrower's weight, bolts directly to this plane. On one side, the flange transitions into a smooth cylindrical neck, while on the working side, four massive rectangular jaws separated by deep slots are cast onto the end face—this geometry precisely matches the shape of the jaws on the moving ZM 01.102 half-clutch, ensuring secure power engagement.

An interesting engineering feature of this hub is concealed inside its central bore. Unlike the moving half-clutch, which features keyways to rotate together with the shaft, the internal bore of the ZM 01.180 hub is smooth. According to the classic catalog, two special NEN 400003 cermet bushings are factory-pressed into this bore—a crucial solution for kinematics, because when the operator disengages the drive to tow the machine, the wheel and hub must roll freely. These internal cermet bushings act as sleeve bearings, allowing the hub to rotate smoothly and unobstructed around the stationary reverse shaft without the risk of binding or wearing out the axle itself.

The configuration of the running gear with this part depends directly on your unit's drive layout. On classic machines (ZM-60, ZM-60A), where the disconnection mechanism is asymmetric, only one such hub is installed (1 pc.)—typically on the left half-axle, while the right side features a standard "blind" ZM 01.104 hub without jaws. On modern modernized grain throwers with a symmetric drive layout, where disconnection clutches are installed on both sides for superior gearbox protection, a total of two ZM 01.180 hubs are installed per machine (2 pcs.)—one for each driving wheel.

Associated Parts of the ZM 01.180 Hub

Because the hub functions as a core support-drive assembly, it operates in constant mechanical interaction with several other components of the running gear. When replacing this part, the following adjacent assemblies must be inspected:

• Jaw half-clutch ZP 01.102
• Reverse shaft ZP 01.625
• Cermet bushings NEN 400003
• Running wheel (ZPT 1.6.2 or SMM 01.090 depending on modification)

The square flange of the hub serves as a reliable base for mounting the driving wheels, though their size and type may vary depending on the manufacturer and generation of your equipment. Classic grain throwers (ZM-60, ZM-60A) traditionally utilize a 400 mm rubber-coated ZPT 1.6.2 wheel—the exact same wheel installed on the front steering axle of the machine. Conversely, our modern modernized ZM-60U and ZM-90U units are equipped with significantly more powerful wheels of an increased diameter—500 mm. This engineering solution substantially improves the heavy machine's mobility over uneven ground, and the hub flange perfectly absorbs and distributes these increased traction loads.

Extended operation of the running gear inevitably leads to shaft wear, prompting farming operations to implement custom modifications to the factory kinematics. Instead of standard cermet bushings, custom-machined bronze equivalents tailored to an unorthodox restored shaft diameter are frequently installed. Frequently, the internal bore of the hub is bored out entirely to accommodate full enclosed rolling bearings to minimize resistance. Furthermore, when replacing original solid-cast wheels with automotive alternatives, the mounting bolt pattern on the flange often requires adjustment. The specialists at Zavod Moroza fully understand these operational nuances. Our production capabilities extend far beyond serial casting—we are ready to fully adapt the ZM 01.180 hub to your modifications, such as boring the central bore to accommodate custom bearings or enlarged bushings, or altering the bolt circle (diameter and hole placement) on the flange to match specialized rims. If necessary, we can design and manufacture a completely custom running gear assembly from scratch that will fit your machine flawlessly and deliver stable operation.

Buying the ZM 01.180 Wheel Hub for Grain Throwers

The long-standing manufacturing experience of Zavod Moroza is built upon a profound understanding of how equipment behaves under real, often critical operational conditions. We know that the ZM 01.180 hub absorbs heavy alternating loads. Over time, due to continuous harsh transmission shocks when starting the heavy grain thrower, its massive working jaws wear down ("round off") and lose their initial form. Simultaneously, vibrations can deform mounting holes on the square flange, inevitably causing dangerous runout in the driving wheel. Deciding to purchase an original hub from our production guarantees receiving a part with precisely calibrated spatial geometry that ensures rigid jaw engagement with the clutch and proper wheel alignment.

Nevertheless, our engineering approach requires a broader perspective. If disassembly reveals that wear has affected not only the hub projections but also the mating jaws of the moving half-clutch or the surface of the shaft itself, targeted replacement of a single part will not eliminate plays entirely. For such scenarios, we recommend ordering pre-assembled half-axles or the complete ZP 01.220 rear-drive unit. Thanks to our flexible in-house manufacturing, we can immediately adapt this assembly to your specific requirements, such as boring mounting seats to install enclosed rolling bearings instead of standard bushings, or even fabricating reinforced steel hubs instead of standard cast-iron ones for equipment operating under extreme load conditions.

Contact our sales department for professional technical consultation and prompt order processing. Choose reliable support-drive assemblies directly from the manufacturer to uncompromisingly restore running gear kinematics and ensure your machine moves confidently through peak operational workloads!