Steering Wheel OVI 01.022.006

Steering Wheel OVI 01.022.006

The OVI 01.022.006 steering wheel is a modern reinforced steering element that comes standard on modernized ZM-60U, ZM-90U, ZM-120U series grain loaders and their ZMB hopper modifications. In the kinematic scheme of the undercarriage, this part acts as a primary lever — it accepts the operator's physical effort and transmits torque to the vertical sprocket shaft, which turns the machine's massive front strut. Borrowed from the design of heavy grain cleaners OVS-25, this part features high spatial rigidity and better ergonomics, allowing it to withstand intensive torsional (twisting) loads without deformation while maneuvering the heavy unit across threshing floor areas.

The main engineering difference of the new steering wheel lies in the configuration of its mounting hub. Unlike classic cast iron wheels with a smooth bore for a fixing pin, the hub of the OVI 01.022.006 features a milled keyway for a full-fledged keyed connection — this solution allows the steering wheel to be rigidly fixed to the shaft, eliminating the problem of hole enlargement and the appearance of parasitic backlashes during sharp jerks.

Due to its strength, this steering wheel is a rational solution for the repair and modernization of older classic ZM-60 and ZM-60A grain loaders. However, the specifics of mounting should be considered: for the correct installation of this part on previous-generation equipment, either a comprehensive replacement of the old sprocket shaft with its modern modernized counterpart (with a prepared keyway) or individual milling of the shank of your existing classic steering axle for a key is required.

Technical Specifications and Design Features of Steering Wheel OVI 01.022.006

• Catalog number: OVI 01.022.006
• Application: ZM-60U, ZM-90U, ZM-120U, and ZMB (+ ZM-60/60A)
• Rim profile: Ribbed
• Spoke design: Reinforced with stiffening ribs
• Mounting seat type: Hub with a milled keyway

The main visual and ergonomic difference between the modern OVI 01.022.006 steering wheel and old smooth cast iron models lies in the special geometry of the rim. The working surface of the steering wheel has a pronounced ribbed (wavy) profile — this design solution provides a secure, firm grip and prevents the operator's hands from slipping. This is important when maneuvering a massive unit, as turning the front strut requires significant effort, and the machine operator's hands often work in dusty threshing floor conditions.

In addition to ergonomics, the overall spatial strength of the part has been significantly increased. The spokes of the new steering wheel are cast with special stiffening ribs that serve as reinforcements at the junctions of the spokes with the central hub and the outer rim — this configuration effectively redistributes stress throughout the body of the part, protecting the steering wheel from deformations, bending, or cracking during peak torsional loads or accidental mechanical impacts.

In working tandem with the modernized key connection, such a reinforced and comfortable-to-grip steering wheel allows the operator to confidently and maximally efficiently transmit high torque to the sprocket shaft. It also guarantees precise, predictable control over the movement of the heavy machine without the occurrence of parasitic backlashes and without the risk of shearing the fixing elements.

Related Parts and Custom Modifications of the Steering Assembly

Since the OVI 01.022.006 steering wheel is the primary control link, its correct installation and reliable operation require an overhaul of the steering column's contact parts. The basic list of related components includes:

• Sprocket shaft ZP 01.330
• Key 8x7x50 GOST 23360-78
• Steering support ZP 01.011.3
• Steering chain PR-19.05-31.8
• Driven sprocket ZP 01.402
• Fixing elements

The basic design of the reinforced steering wheel is calculated for standard operating conditions of modernized units; however, given the variety of tasks and conditions on threshing floors, we have the technical capability to adapt this assembly to specific customer requirements. For farms whose equipment operates on broken surfaces with deep potholes where the resistance to wheel turning is maximal, we can manufacture a custom steering wheel with an increased outer diameter, where the larger rim size acts as a longer lever, proportionally reducing the physical effort required to maneuver the massive grain loader.

Additionally, changes in the material execution of the part are possible. If necessary, the classic cast iron casting can be replaced with an all-welded steel construction made from thick-walled pipe or metal rod. Such rigorous engineering execution possesses higher resistance to hard mechanical impacts (for example, in the event of an accidental drop of heavy tools or work in cramped warehouses). If you are installing the new steering wheel on a previously modified steering column, our specialists can bore out the hub for a non-standard axle diameter or mill a different keyway size, ensuring the correct and rigid mating of parts specifically with your sprocket shaft.

Buy Reinforced Grain Loader Steering Wheel

You can order the OVI 01.022.006 reinforced steering wheel for modernized ZM and ZMB series grain loaders directly from Zavod Moroza. Purchasing parts from the manufacturer guarantees the correct geometry of the hub and the exact compliance of the milled keyway dimensions, ensuring a reliable fit of the steering wheel onto the sprocket shaft without the need for additional fitting and eliminating the risk of parasitic backlashes while maneuvering the unit on the threshing floor.

We maintain a stable warehouse stock of standard components for prompt shipment, and we also fulfill individual orders for specific operating conditions. If necessary, we are ready to manufacture a steel welded steering wheel instead of a cast one, increase the rim diameter to reduce the operator's physical effort, or bore out a non-standard mounting hole to fit the already modified steering axle of your machine.

Contact our sales department for component selection — we understand the design features of steering assemblies across equipment of various generations and manufacturers and will help you find reliable solutions for repair, retrofitting, or modernization that will suit your specific unit.