Band Brake Spring ZP 01.612 (Kit) for ZM-60U/90U/120U

Modernized Trimmer Band Brake Spring ZP 01.612 (Kit)

The ZP 01.612 spring is the main power-resilient element of the modernized trimmer band brake, which equips the modern ZM-60U, ZM-90U, and ZM-120U series grain loaders of our production. Its basic engineering task is to create a constant design force for tightly clamping the brake band around the drum, ensuring reliable locking of the massive trimmer and preventing its spontaneous turning under the influence of vibrations and grain flow recoil.

This spring is mounted directly onto the extended straight shank of the brake band itself. For correct installation and the ability to precisely adjust the operating force, it forms a single tensioning kit. In addition to the ZP 01.612 spring itself, this mounting assembly also includes standardized fastening elements: M12 flat support washers (GOST 11371-68), M12 spring lock washers (GOST 6402-70), and two M12 adjusting nuts (GOST 5915-70). This very kit of parts, screwed onto the thread of the band shank, creates a reliable base for the spring to rest against. By rotating these nuts, the operator compresses or releases the spring, precisely setting the required operating tension and clearance without using complex intermediate rods or capricious spherical washers, which were mandatory for classic equipment models.

Technical Specifications of Spring Kit ZP 01.612.000

• Base part catalog number: ZP 01.612.000
• Application: ZM-60U, ZM-90U, ZM-120U (trimmer band brake assembly)
• Action type: Direct linear compression
• Standard components in assembly: M12 nut (GOST 5915-70), 12 flat washer (GOST 11371-68), 12 spring washer (GOST 6402-70)

In the modernized trimmer locking assembly, we simplified the overall system kinematics. The spring is installed directly onto the elongated straight threaded shank of the brake band itself — this engineering solution made it possible to eliminate the intermediate guide rod and the specific spherical hinge washer, which were mandatory elements on previous generation machines. Force is now transmitted linearly, which reduces the likelihood of spring misalignment and mechanism binding during operation.

The transition to a direct-action system has made the assembly more serviceable. To adjust the tension and create a support base for the spring, exclusively standardized hardware is used — regular M12 hex nuts, flat washers, and lock washers. Reducing the number of specific custom-made parts simplifies the process of servicing the unit on the threshing floor: if a nut or washer is lost during disassembly or brake adjustment, the operator does not need to stop work and wait for the delivery of an original factory spare part. All necessary elements for securing the spring are standard; they can be quickly found in the farm's workshop or purchased at any hardware store, reducing equipment downtime to a minimum.

Related Parts of Spring ZP 01.612.000

For full maintenance or a comprehensive overhaul of the trimmer locking mechanism, the following parts must be checked:

• Brake handle ZP 01.150
• Brake band ZP 01.241 (for ZM-60U/90U) or ZM-120U (ZP 01.242)
• Brake lever ZP 01.000.2.2
• Fixing elements (adjusting nuts, washers, cotter pins)

In the modernized mechanism, all these parts work in tight kinematic connection. Operational practice proves that breakdowns most often occur due to the human factor, when the assembly operates stiffly and the operator applies excessive physical force trying to turn the massive trimmer. In our updated system, the force from the handle is transmitted to the band via a reinforced flat lever clearly and linearly, completely eliminating parasitic angular misalignments. At the same time, the working spring is mounted directly onto the straight extended shank of the brake band, so it compresses strictly along the axis and does not bow into an arc even during careless jerks. This makes control intuitive — the operator feels a soft and clear handle movement until complete unbraking, which naturally protects parts from deformation and the band itself from premature wear or rupture.

Since the wear or deformation of even a single element affects the overall accuracy and rigidity of trimmer locking, it is advisable to order these parts as a single ready-made assembly kit. Simultaneous installation of a new handle, direct-action band, lever, and spring will save you from problems, guaranteeing perfect compatibility of contact surfaces and the long-lasting, safe operation of the entire pivoting mechanism on the threshing floor.

Buy Trimmer Band Brake Spring Kit ZP 01.612 from Zavod Moroza

The reliability of the trimmer locking mechanism depends on the spring's ability to retain its design rigidity over many busy seasons. Zavod Moroza pays special attention to the quality of such power resilient elements — our ZP 01.612 springs are manufactured from proper spring wire with strict compliance to winding technology and heat treatment. Thanks to this, the part does not "sag" under constant load and stably generates the force necessary to lock the drum. And the transition to modernized direct-action kinematics guarantees that the spring operates exclusively on linear compression and no longer bows into an arc due to intermediate part misalignments, as often happened on classic models.

You can order both the spring itself and a ready-made tensioning kit with the necessary standardized hardware (adjusting nuts and M12 washers), or purchase a fully assembled modernized ZP 01.140 band brake assembly equipped with a direct-action band and a reinforced lever.

Contact our sales department for component selection. We deeply understand the structural differences of equipment across various generations and manufacturers and guarantee the precise compatibility of every ordered part with your unit. Install proven engineering solutions directly from the manufacturer so that repairs turn into simple maintenance, and your trimmer locks securely without any binding or loss of rigidity!