Screw ZP 01.070 with Handle and Pawl Assembly

Screw ZP 01.070 + handle with pawl assembly

The front travel screw ZP 01.070, equipped with a welded ratchet wheel (star wheel), handle, and pawl, constitutes a ready-to-install part of the front travel height adjustment mechanism assembly ZP 01.020 of the ZM-60 series grain loaders. This complex element is the load-bearing base of the lifting system, which takes on the weight of the front section of the machine during the position change of the inner yoke ZP 01.040 relative to the outer one ZP 01.050. Thanks to the coordinated operation of the ratchet mechanism, the reciprocating movements of the lever are effectively transformed into the rotation of the shaft, which forces it to move smoothly along the thread of the special nut ZP 01.101 or a special bearing housing in some modifications. The factory assembly format eliminates the need to independently center or weld parts, allowing one to proceed directly after mounting to the precise adjustment of the clearance of the front section of the frame - to lower the feeders into the working position for material pickup or to raise them above the surface for safe transportation of the unit.

Design features of the assembled unit ZP 01.070 with handle and pawl

The basis of this ready-made kit is a durable steel shaft designed for constant axial loads. The main working section of the part is the trapezoidal thread - it is exactly this profile that guarantees the self-braking effect, reliably holding the mass of the machine without the risk of spontaneous unwinding of the mechanism. In the upper part of the screw, a ratchet wheel (star wheel) with 9 teeth (Z-9) is rigidly fixed. Since the assembly is supplied assembled, the handle with the pawl is already mounted on it. The welding of the star wheel at the Zavod Moroza takes place in special jigs, due to which perfect perpendicularity of the teeth plane relative to the shaft axis is achieved, ensuring precise engagement of the pawl and completely eliminating misalignments during force transmission.

In the overall kinematics of the front travel, this assembled unit acts as a manual power drive. The screw works in tandem with the special nut ZP 01.101, which is bolted (or welded in some modifications) to the platform of the outer yoke. When the operator makes reciprocating movements with the handle, the pawl rests against the teeth of the ratchet wheel, forcing the shaft to rotate. The screw begins to move through the thread of the nut, and its lower smooth end presses on the horizontal flange of the inner yoke ZP 01.040 via corresponding support elements (thrust washers or bearings). Advancing downward, the shaft pushes away the leg with the wheel, causing the front section of the frame to rise. Accordingly, unscrewing the screw upward relieves this pressure, and the structure smoothly lowers under the influence of gravity.

Repair features related to the assembly of screw ZP 01.070

Purchasing a screw already assembled with a handle and pawl is the optimal solution for a fast and high-quality repair. Such a format completely relieves the operator of the need to search for small fasteners or spend time on the correct layout of the ratchet mechanism. However, it is worth remembering that the wear of the lifting assembly usually has a complex nature, and the main rule of a durable repair is the simultaneous renewal of the entire screw pair. If a new shaft with a perfect trapezoidal thread is screwed into an old, battered nut, the fresh metal will begin to wear intensely against the worn threads, and the part may fail faster. For a complete restoration of the ZM-60 position adjustment mechanism, in addition to this ready-made kit, we offer all the necessary associated spare parts:

• Special nut ZP 01.101
• Front travel yokes (outer ZP 01.050 and inner ZP 01.040)
• Support elements (a system of bushings, thrust washers, or bearings)
• Small mechanics and fasteners (locking cotter pins, grease nipples, standard threaded connections)

The product range of the Zavod Moroza is designed for any technical scenarios. If there is a need for only a partial repair, you can always order individual components from us - a bare power shaft, a Z-9 star wheel blank for independent welding, or a separate handle or pawl. At the same time, it is precisely a comprehensive approach to replacing the entire lifting assembly that allows restoring the original factory kinematics to the system. Simultaneous installation of the complete kit significantly saves overall time for servicing the unit. In addition, this approach reliably protects new spare parts from accelerated destruction, which inevitably occurs upon their contact with worn elements.

Universality and compatibility of the ready-made assembly ZP 01.070

Despite the fact that many parts and assemblies of grain loaders were frequently modernized by various enterprises, the lifting power mechanism historically preserved a single technical standard. Due to this, our factory assembly - the screw with the already mounted handle and pawl - is absolutely compatible with the overwhelming majority of ZM-60 units regardless of their year of manufacture. The classic dimensions of the shaft, the precise pitch of the trapezoidal thread, and the calibrated engagement of the ratchet allow seamless integration of this ready-made assembly into both Soviet-style equipment and modernly manufactured machines.

However, the realities of work on farms are often accompanied by non-standard modifications of equipment. If, over the years of operation, your grain loader received non-standard oversized wheels or its front frame was artisanally re-welded, the classic working travel of the screw might be insufficient for the full lowering of the feeders for operation. Understanding such nuances, the Zavod Moroza has all the capabilities for the rapid manufacture of an assembled mechanism with individual parameters. Our specialists will promptly machine an extended or shortened version of the shaft, apply a reinforced steel grade if necessary for work under extreme loads, and immediately equip the part with a handle and pawl. Regardless of whether you need a standard catalogue variant or a specific assembly according to your own measurements, you will receive a perfectly tuned mechanism ready for immediate installation on your machine.

Main causes of wear of the ZM-60 front travel lifting mechanism

Intensive operation of the mechanism under the conditions of a dusty threshing floor inevitably leads to gradual metal wear. The trapezoidal profile of the shaft absorbs a continuous vertical load from the massive frame, while fine debris, settling on the lubricated threads, forms a harsh abrasive paste. Every movement of the handle under load forces this mixture to act like sandpaper, which methodically grinds steel off the screw and the inner surface of the nut. As a result of such wear, the system loses the ability to hold weight, and the front travel, especially during vibrations, begins to sag uncontrollably. Consequently, the rubber scrapers of the feeders drop too low, rub more against the hard surface of the area, and rapidly deteriorate, provoking a more expensive and lengthy repair of the pickup section.

A significant portion of critical breakdowns is also associated with the human factor. If the movable yokes jam due to housing deformation or lack of lubrication, operators often try to solve the problem using brute force - they put a metal pipe over the handle of the lever for its easier rotation. Such an extreme overload might work, successfully lifting the unit, but it often bends the axis of the shaft or completely strips the thread. As for the ratchet mechanism itself, its failure occurs gradually - due to constant friction of the steel pawl against the teeth of the star wheel, their sharp edges become rounded. When the engagement geometry is critically compromised, the pawl simply begins to slip on the metal, and the operator rocks the lever mostly in vain, because torque is not transmitted to the shaft, and height adjustment becomes problematic.

The production of components at the Zavod Moroza is based on the use of wear-resistant steels, which allows maximizing the working life of the mechanism. However, if your old screw has already altered its geometry and the ratchet teeth are worn smooth, attempting to repair it in a garage is a futile endeavor. Building up new threads with the correct trapezoidal pitch is impossible, and it is equally risky to artisanally weld a new star wheel onto an old rod - the slightest angular misalignment will cause the pawl to contact the teeth unevenly, and instead of a full transfer of torque, it will begin to slip during lever movements, and in most cases, you will simply rock the handle in vain. Purchasing our ready-made factory-assembled unit is the only technically justified solution, which instantly restores ease of adjustment to the system and guarantees stable operation with proper fixation of the working height position of the grain loader.

Buy front travel screw ZP 01.070 with handle and pawl assembly

Our enterprise implements a closed production cycle for both our own modern and improved grain loaders and agricultural machinery components, which guarantees strict quality control at every stage. Since this assembly is supplied fully assembled, special attention must be paid to the accuracy of final mounting. After machining a deep trapezoidal thread on a strong steel shaft, we weld the ratchet wheel exclusively in special jigs, which ensures perfect perpendicularity of the star wheel to the screw axis, thanks to which the installed handle with the pawl operate smoothly, transmitting torque precisely and without any slippage.

We well know the value of every hour during the season on the threshing floor, therefore we always maintain in stock a sufficient reserve of ready-to-install mechanisms ZP 01.070 and other parts and assemblies of grain loaders. Adherence to authentic blueprints makes our products one hundred percent interchangeable with parts of ZM-60 grain loaders of any production year, and if your equipment has undergone modernizations, the capabilities of the Zavod Moroza allow us to promptly fulfill a custom order - to machine a shaft of non-standard length and ship it as a fully ready assembly tailored to the specifics of your exact unit.

By purchasing the assembled mechanism ZP 01.070 with handle and pawl assembly, you significantly accelerate the repair process. However, to achieve maximum durability, we strongly advise installing the new screw in pair with a new special nut ZP 01.101 (or a special bearing housing in some modifications) to avoid premature wearing of the thread. Contact the specialists at the Zavod Moroza for consultation - we will help take into account all the nuances of your machine, select associated parts, and promptly dispatch the order. All so that the equipment returns to full operation as quickly as possible, it becomes easy to set the correct alignment of the feeders, and the unit effectively and cleanly picks up the maximum amount of grain on its own.