Upgraded ZP 01.220 Reverse Axle Assembly (Without Wheels)

Upgraded ZP 01.220 Reverse Axle Assembly (Without Wheels)

The ZP 01.220 symmetric reverse axle without wheels is a fully equipped, adjusted heavy-duty rear axle unit of the new generation, designed for installation on self-propelled ZM-60U, ZM-90U grain thrower series and their equivalents, including hopper models. This assembly also serves as an optimal modernization kit for classic ZM-60 or ZM-60A grain throwers.

Supplying the running gear without support wheels and mounting hardware is a rational engineering and financial solution for agricultural operations where existing tires and wheel disks retain their operational service life, but the internal locking and drive mechanics of the rear axle require a complete overhaul. Acquiring a ready-made factory module allows you to fully reconstruct the running system and restore its operational potential without overpaying for new wheels.

Technical Specifications of the Symmetric ZP 01.220 Reverse Axle (Without Wheels)

• Assembly catalog number - ZP 01.220 (upgraded symmetric configuration without support wheels).
• Equipment compatibility - ZM-60U, ZM-90U grain throwers + similar wheeled grain loaders, as well as classic ZM-60/60A models.
• Drive layout - symmetric, featuring two identical drive half-axles and individual cam disengagement clutches on each side.
• Drive shafts - two reinforced ZP 01.625 steel shafts with 30 mm bearing seats.
• Support bearing block - four spherical double-row 11206 bearings housed within massive H 026.058 cast-iron housings.
• Dust protection system - H 026.163 through cast-iron covers equipped with reinforced 30x52 mm oil seals and grease fittings for pressure lubrication.
• Assembled wheel hubs - two ZM 01.180 cast-iron cam hubs, each press-fitted with two wear-resistant 30x40x25 mm cermet bushings.
• Disengagement control group - two ZP 01.102 cam half-clutches, two ZP 01.626 heavy-duty springs, ZM 01.435 support washers, and ZP 01.631 complete latch assemblies with rings.
• Drive group - two ZP 01.340 sprockets (Z=25 teeth for PRL-19.05 roller chain) with secure keyed fastening.
• Wheel base inclusion - excluded (supplied without steel wheel disks, rubber tires, or M12 mounting bolts).

Design Advantages of the Upgraded ZM-60 Reverse Axle

Transitioning to a symmetric drive layout with complete gearbox load relief is a key advantage of the upgraded reverse axle. In legacy asymmetric designs, drive uncoupling occurred on only one side, meaning that during manual towing or rolling of the grain thrower, the opposite "blind" wheel continued to forcibly spin internal self-propelled gearbox gears, creating movement resistance and causing natural transmission wear. Our symmetric design featuring two mirrored ZP 01.625 half-axles completely eliminates this issue-when the operator pulls back both ZP 01.102 cam half-clutches, the hubs of both wheels enter a free-rolling mode on cermet bushings around stationary shafts. This completely isolates the wheel base from the drive, facilitates maneuvering, and reliably protects the self-propelled gearbox from any parasitic loads during transport.

The exceptional strength of the updated shafts and secure keyed sprocket engagement guarantee stable running gear performance under extreme operating conditions. The axle base utilizes reinforced ZP 01.625 shafts with a 30 mm diameter-their geometry completely eliminates hazardous circular grooves for retaining snap rings and transverse through-holes for safety shear pins, which acted as stress concentration points on classic shafts and could cause axle deformation or failure under load. Instead of vulnerable pin-based sprocket attachments that constantly loosened and required frequent pin replacements, the new layout secures ZP 01.340 drive sprockets using prismatic keys and clamping set screws, eliminating backlash, preventing axial component displacement under vibrations, and guaranteeing reliable drive operation.

Cermet support integration and robust leak-tight dust protection minimize friction and safeguard moving parts from wear. The central bore of each ZM 01.180 cam hub is press-fitted with two porous self-lubricating 30x40x25 mm standard cermet bushings, ensuring flawless, smooth wheel rotation on the shaft when clutches are disengaged. The half-axle itself rests on two double-row spherical 11206 bearing supports housed within massive H 026.058 cast-iron housings. The spherical geometry of the bearings automatically compensates for minor shaft deflections under heavy frame weight or misalignments of mounting pads. For reliable isolation from pervasive grain dust, the housings feature H 026.163 through cast-iron covers fitted with tight 30x52 mm reinforced oil seals that securely retain lubricant inside the bearing chamber.

Configuration Flexibility and Modernization Prospects for the ZM-60 Reverse Axle

Although this upgraded symmetric reverse axle is structurally engineered to operate with heavy-duty 500 mm increased-diameter rubber-tired wheels, the versatility of the square flange on our ZM 01.180 cam hubs allows seamless installation of your existing 400 mm wheels (ZPT 1.6.2)-offering an excellent opportunity to execute high-quality, budget-friendly running gear repairs while fully preserving the wheel base already available on your farm.

Nevertheless, building upon years of practical agricultural machinery maintenance experience, we recommend that farmers consider a complete transition to enlarged 500 mm wheels (derived from OVS-25 cleaners) where possible. Transitioning to a larger diameter increases machine ground clearance, simplifies rolling over technological ridges, reduces rolling resistance on uneven threshing floor surfaces, and effectively dampens minor vibrations, shielding the frame and feeders from premature degradation. An even more progressive step in running gear modernization involves shifting to a self-propelled system based on an industrial motor-reducer with pneumatic wheels, similar to the setup standardly installed on our high-efficiency ZM-120U grain throwers. Pneumatic drives with motor-reducers radically transform machine maneuverability across any non-ideal soil surface, ensuring unprecedented smoothness of travel, finer speed regulation, and completely eliminating severe shock loads on the grain thrower's metal framework.

However, if your farm's current objectives require preserving the classic wheel format with a rational budget allocation, the baseline configuration of our reverse axle without wheels remains an optimal engineering solution. You purchase exclusively new, reliable, and factory-calibrated mechanics designed to serve your equipment reliably for many years.

Installation and Maintenance Features of the ZP 01.220 Reverse Axle

To ensure reliable corrosion protection during storage and transit, bearing units ship with light factory preservation grease. However, prior to initial operation, the bearing housing chambers must be filled with quality consistency grease to 1/3–1/2 of their volume (professional pre-lubrication before shipment or a separate grease supply is available upon request and prior arrangement).

Installing the assembled axle takes minimal time. The grain thrower frame mounting area is cleared of old components, after which the four H 026.058 cast-iron housings bolt via their mounting feet directly to the standard frame mounting locations. Your support wheels are secured to the ZM 01.180 hub flanges using M12 bolts, after which PRL-19.05 chains from the self-propelled gearbox are stretched over the drive sprockets. For routine maintenance during operation, accessible grease zerk fittings are integrated into the bearing covers, allowing easy pressure greasing of bearing units without disassembling the transmission.

Buying the Upgraded Symmetric Grain Thrower Reverse Axle (Without Wheels)

Zavod Moroza guarantees high factory manufacturing quality for every component, strict adherence to geometric tolerances, and concentric alignment across all moving elements. Our cast-iron hubs, half-clutches, and bearing housings are cast from high-strength gray cast iron (Sch 20), while drive shafts undergo meticulous grinding on precision machine tools.

We offer flexible and advantageous cooperation terms tailored to your business's unique requirements. The most sought-after solution is the fully assembled symmetric unit without wheels, shipped ready for installation with pre-installed drive sprockets and professionally calibrated cam clutch clearances. For extreme load conditions, custom alloy steel manufacturing can be ordered-in this case, we fabricate drive shafts from high-strength 40X structural alloy steel featuring localized friction zone hardening, ensuring maximal torsional resistance and durability without keyway or bore deformation. We also offer custom flange bolt-pattern adaptation services: if your farm utilizes non-standard automotive or agricultural disks, our specialists can precisely adapt the mounting holes of the ZM 01.180 cast-iron hubs to match your unique dimensions right at the manufacturing stage, guaranteeing fast and simple wheel base installation.

Contact our qualified engineers for professional consultation! We will help you verify compatibility questions regarding your wheels and our hubs free of charge, select necessary drive chains or gearboxes, and dispatch your order promptly directly from the manufacturer's warehouse!