Screw ZP 01.070 with handle and pawl (assembled)

Screw ZP 01.070 with Handle and Pawl Assembly for ZM-60U/90U/120U Grain Loaders

This assembly is a component of the grain loader's front travel lifting mechanism. The kit combines a power screw with a welded ratchet wheel, as well as a manual drive system, allowing the machine operator to smoothly adjust the height of the loading feeders. Using a factory-assembled unit is a way to quickly restore the functionality of the undercarriage without the need for manual centering of the ratchet or performing welding work directly in the field or on the threshing floor.

The new-generation assemblies, developed specifically for the modernized grain loaders by Zavod Moroza, feature a number of engineering optimizations. The main change was the introduction of an elongated straight handle, which provides significantly greater leverage than outdated curved analogs, making the process of changing the frame height require less effort. The design of the ratchet mechanism has been simplified: the number of intermediate links has been reduced, which increases the reliability of the pawl engagement and extends the overall service life of the mechanism. All parts of the assembly are manufactured from structural steels with the necessary thermal treatment of the working surfaces, allowing the mechanism to withstand intense loads during operation in difficult conditions without the risk of premature abrasion or deformation.

Technical Specifications of the Screw with Handle and Pawl (ZP 01.070 SB)

• Catalog Number: ZP 01.070 (assembly with handle and pawl)
• Application: ZM-60U, ZM-90U, ZM-120U, ZMB-90U, ZMB-120U
• Mechanism Type: Screw pair with ratchet drive
• Manual Drive Type: Straight elongated handle
• Position Locking: Ratchet mechanism (with pawl ZP 01.401)
• Quantity per Unit: 1 set
• Country of Manufacture: Ukraine

This assembly is the foundation of the grain loader's height control system, allowing the operator to accurately lower the feeders to the threshing floor surface or raise them to put the machine into transport position. Structurally, the assembly consists of a power screw with cut trapezoidal threads to which a ratchet wheel is rigidly attached. Force transmission occurs through the long lever of the handle, which, in the modernized versions by Zavod Moroza, features modified geometry for easier control. During operation, the reversible pawl engages with the teeth of the ratchet (daisy wheel), allowing for convenient transmission of rotational force from the handle to the screw in the selected direction — for both lifting and lowering the front part of the unit.

When developing this mechanism, we paid special attention to the durability of the threaded surfaces and ease of maintenance. The screw is manufactured using thermal treatment, which minimizes thread wear from constant friction against the nut. The simplified kinematics of the ratchet mechanism reduced the number of attachment points, which positively affected engagement reliability — the pawl and the screw with the daisy wheel perform their function clearly even after prolonged operation in conditions of grain dust. To increase the service life of the assembly, we recommend periodic cleaning and replenishment of grease on the screw threads, as the accumulation of dust and used grease eventually increases the load on the drive.

Related Components and Execution Options

This assembly is supplied as a set of the main moving components of the lifting drive, which include:

• Front travel screw ZP 01.070 with ratchet wheel (welded Z-9 daisy wheel)
• Straight handle ZP 01.060
• Reversible pawl ZP 01.401 with fastening elements

To restore the correct kinematics of the lifting mechanism, we recommend purchasing this assembly together with a special nut ZP 01.101 to form a complete screw pair. Installing a new screw into an old, worn nut leads to accelerated abrasion of the threads, the appearance of play, or jamming of the shaft due to thread profile mismatch, whereas replacing both components simultaneously ensures proper engagement of the trapezoidal threads and increases the undercarriage's mean time between repairs.

Depending on the grain loader's operating conditions, you can choose the material and configuration of the undercarriage support elements. The standard special nut is made of anti-friction grey cast iron, which ensures smooth thread sliding; however, for work on uneven surfaces with high impact loads, we can manufacture a steel modification of the nut, which is additionally equipped with internal lubrication grooves for better grease retention in the friction zone. The technical capabilities of our production also allow for adapting the length of the shaft screw or changing the handle lever parameters according to individual customer requirements.

Buy Screw ZP 01.070 for ZM-60U with Handle and Pawl Assembly

At Zavod Moroza, you can promptly order and receive the assembled screw mechanism ZP 01.070 with handle and pawl. Purchasing and receiving parts as a ready-made factory assembly allows you to replace a worn screw shaft or a broken drive lever without needing to weld the ratchet yourself or center the components on-site. All parts are manufactured from structural steels in compliance with linear tolerances, simplifying their installation in their standard location.

We maintain a stable stock of assemblies and individual spare parts for the undercarriage, so orders are shipped and delivered without delays to your farm's operation. Contact our sales department to select components — we are highly knowledgeable about the lifting mechanisms of grain loaders of various modifications and will help you select optimal parts taking into account the design features of your specific unit.