Front Travel Hub ZM-60/60A

Front Travel Hub ZM-60/60A (ZPT 1007)

The hub ZPT 1007 is the main load-bearing element of the wheel assembly of the classic front travel of the ZM-60/60A grain loaders and their modifications. In the kinematic scheme of the undercarriage, it acts as a central base for ensuring the stable rotation of the wheel. It is precisely in the internal cavity of the hub that the bearing assembly (roller or ceramic bushings) is mounted, which is fixed at the end face by the thrust washer 3S 4041 and protected from dirt by the cover 3S 4040. The main engineering task of the hub ZPT 1007 is to absorb and withstand the intensive radial and axial loads that arise during the movement and sharp turns of the massive unit on the threshing floor, ensuring their uniform distribution onto the front wheel axle ZP 01.601. The correct geometry of the undercarriage and the durability of all adjacent front travel elements directly depend on the structural strength and the accuracy of the seating locations of this part.

Features and Associated Parts of the Hub ZPT 1007

• Catalogue number: ZPT 1007
• Purpose: Central support base of the front wheel, placement of the bearing assembly
• Material: Cast iron SCh20 (or structural steel in a reinforced design)
• Quantity per unit: 1 pc. (in the classic single-wheel execution of the front travel)

Structurally, the hub ZPT 1007 is a massive cylindrical body that acts as the main connecting link between the suspension axle and the rotating wheel. The outer part of the part has an expanded flange with mounting holes for rigid fixation of the metal disc (rim) of the rubber-coated wheel ZPT 1.6.2.

The key zone from an engineering point of view is the internal through cavity with a classic stepped bore - exact seats are formed in it on both sides, where roller or ceramic bushings are mounted. The smoothness of the wheel rotation on the axle directly depends on the perfect concentricity and surface finish quality of these surfaces. To ensure the maximum margin of rigidity, the part is manufactured from SCh20 cast iron (or steel in reinforced modifications) - such a massive body reliably resists bending deformations.

During operation on the threshing floor, this assembly holds the weight of the entire front part of the grain loader with feeders, taking on extreme radial and lateral loads (especially during sharp turns). During prolonged operation, this leads to the natural wear (depletion) of the internal seating locations, resulting in the appearance of critical play. In addition, due to harsh impacts against the unevenness of the site, microcracks or chips can occur on the metal - that is exactly why the integrity of the hub and the working condition of its seats must be carefully checked during every maintenance of the undercarriage.

To fully restore the operability of the wheel assembly and ensure its correct operation without misalignments, it is advisable to replace or service the hub together with the following adjacent parts:

• Roller bushings 32x48x65 (or metal-ceramic)
• Thrust washers 3S 4041
• Dust covers 3S 4040
• Front wheel axle ZP 01.601

Scheduled repair of the wheel assembly is also a great opportunity for targeted improvement of the entire mechanism. For example, instead of classic roller bushings, durable ceramic analogues can be installed inside the hub, which significantly reduce the friction coefficient and are more wear-resistant. However, if the original ZPT 1007 hub body has irreversible damage, and the classic single-wheel suspension regularly requires service, the best engineering solution would be a complete transition to the modernized two-wheel front travel of our production. In this reinforced design, the outdated open system with bushings and stamped covers is completely replaced by a fail-safe pendulum system with two wheels on closed bearings, which permanently eliminates the problem of axial play, distributes the weight of the unit, and radically facilitates control.

Buy the Hub ZPT 1007 for ZM-60/60A

To ensure the stable geometry of the undercarriage of your grain loader and eliminate emergency stops, order high-quality components at the Zavod Moroza. We manufacture ZPT 1007 hubs with strict adherence to all technical tolerances and surface finish of the seating locations, which guarantees the perfect fit of the bearing elements and a long service life of the assembly.

In our assortment, there are always available both separate ZPT 1007 hubs and a full range of accompanying parts - from thrust washers and covers to roller or ceramic bushings. In addition, you can order a fully equipped front wheel assembly, which will allow you to perform the replacement as quickly as possible. Contact our technical specialists to place an order, and we will promptly ship the necessary parts for a quick and high-quality repair of your equipment.