Wheel Rim ZPT 1.6.2.1 for ZM Grain Loader

Wheel Rim ZPT 1.6.2.1 for ZM Grain Loader Undercarriage

The wheel rim ZPT 1.6.2.1 is the primary load-bearing metal element of the support wheels ZPT 1.6.2 used in the undercarriage of both modern grain loaders produced by us (ZM-60U, ZM-90U, ZM-120U + ZMB) and classic ZM-60/60A models. In the overall kinematic scheme of the undercarriage, this steel disk acts as the key power link between the axis of rotation (via the cast iron hub ZPT 1007) and the massive outer rubber tire (IZh 2162).

The metal rim bears the entire static weight of the unit's massive frame and the harsh lateral (torsional) loads that occur during maneuvering and sharp turns on uneven threshing floor surfaces. The reliable seating of the outer rubber, the absence of axial runout ("wobble"), and the overall stability of the machine's travel directly depend on the correct geometric shape, the strength of the weld seams, and the overall structural rigidity of this part.

In the design of our modernized two-wheel front travel system, the operational load is evenly distributed across two such rims mounted at the ends of the pendulum axle OVI 01.023. Despite the transition to a reinforced pendulum base, the part itself has fully retained its proven geometry and mounting dimensions, remaining completely universal and interchangeable for both modern and classic single-wheel grain loaders from previous years.

Technical Specifications of Rim ZPT 1.6.2.1

• Catalog Number: ZPT 1.6.2.1
• Application: Undercarriage wheels of ZM-60U, ZM-90U, ZM-120U, ZMB (and classic ZM-60/60A)
• Material: Sheet structural carbon steel (St3)
• Metal thickness: 6 mm
• Quantity for front two-wheel travel: 2 pcs.
• Country of Manufacture: Ukraine

Structurally, the ZPT 1.6.2.1 rim is a solid welded metal structure consisting of a central support disk and an outer cylindrical ring welded to it. The use of 6 mm steel provides the necessary spatial rigidity so that the disk does not deform under the static weight of the massive machine and can withstand lateral (torsional) loads during turns. Standardized mounting holes are made in the center of the disk, with coordinates matching the ZPT 1007 hub flange, guaranteeing precise centering on the axle without misalignment.

The outer surface of the support ring has a strictly calibrated diameter and a smooth finish, designed for a tight mechanical press-fit of the massive rubber tire IZh 2162 or for applying a rubber layer via hot vulcanization. The precision of the outer contour geometry is important for reliable tire fixation, as in the classic version, it is held on the metal exclusively by friction and the negative tolerance of its own internal diameter.

A separate factor in the part's reliability is the quality of the welded connection between the central disk and the outer cylinder. In the pendulum two-wheel travel system, support disks are constantly subjected to cyclic alternating loads and harsh vibrations when following the threshing floor's terrain. In the standard factory execution, a reliable intermittent weld seam is used to connect these elements, providing basic structural rigidity. At the same time, if necessary and for operation under extreme load conditions, a continuous circular weld seam with deep metal penetration can be applied during production — this reinforced solution additionally prevents the appearance of fatigue cracks along the connection contour and is guaranteed to maintain the ideal cylindrical shape of the rim over many years of operation. Rigidity and geometric stability of the metal base are the fundamental conditions for eliminating wheel axial runout and preventing the rubber tire from sliding off during complex machine maneuvers.

Related Components and Contact Assemblies

The metal rim ZPT 1.6.2.1 works under constant load as an intermediate power link between the travel axle and the surface. According to the kinematic scheme of the front travel, the condition of the following contact parts must be checked during diagnostics or disk replacement:

• Non-banded massive tires IZh 2162
• Wheel hubs ZPT 1007
• Wheel axle OVI 01.023
• Fork axle ZP 01.601
• Fastening elements - bolts, nuts, and spring washers

The implementation of an open two-wheel pendulum base removed the spatial limitations previously dictated by the narrow housing of the classic single-wheel fork. Since the wheels are now mounted outside the metal structure, this has opened up opportunities for individual adaptation of the metal rim to specific conditions. For example, for operation on threshing floors with severely damaged concrete surfaces, we can manufacture reinforced disks from thicker sheet metal (e.g., 8 or 10 mm instead of the standard 6 mm) — this increase in metal mass proportionally enhances the structure's resistance to deformation from heavy impacts and regular pothole hits. If necessary, the general dimensions of the part can also be changed — our production capabilities allow us to manufacture a rim with an increased diameter or with a wider outer mounting ring designed to accommodate wider tires to further reduce the machine's specific pressure on the surface.

Another practical solution is changing the mounting system. Understanding that over years of operation, non-standard hubs (from other agricultural machinery, carts, or automotive types) might have been installed on many units, we are ready to individually change the geometry of the central hole and the bolt pattern. The coordinates of the mounting holes are cut with high precision on modern equipment to fit your specific configuration, which will allow you to reliably center and mount our durable rims without the need to modify existing axles or replace working hubs.

Buy Steel Wheel Rim ZPT 1.6.2.1 from Zavod Moroza

Over more than 20 years of production practice, Zavod Moroza has formed a clear engineering approach to manufacturing undercarriage elements — base strength defines the overall reliability of the machine. The production of metal structures at our facility is based on strict adherence to technology and the use of quality rolled steel with spatial geometry control for every welded assembly. We understand the specifics of operating heavy machinery on Ukraine's threshing floors, which is why our rims are designed for many years of service without axial runout or deformation, even during harsh machine maneuvers, including towing over potholes and thresholds during periods of intensive use.

At our enterprise, you can buy the metal rim ZPT 1.6.2.1 as a separate spare part for independent wheel restoration in your own workshop, or order a fully equipped assembly. Since high-quality seating of a massive non-banded tire requires a hydraulic press, if you lack this equipment on your farm, the most rational solution is to purchase the ready-to-use rubber-coated wheel assembly ZPT 1.6.2, where the rubber is already reliably press-fitted or applied via hot vulcanization for extreme loads.

Contact our sales department to select components — we are well-versed in the technical nuances of undercarriage systems of various production years and brands, and we will select the optimal parts taking into account the configuration of your specific unit. Order durable steel disks directly from the manufacturer to ensure a stable support base, even travel, and long-term resolution of wheel maintenance issues for your grain loader.