Half-coupling ZP 01.102

ZP 01.102 Half-Clutch (Grain Thrower Drive Disconnection Jaw Clutch)

The ZP 01.102 half-clutch is a movable element of the ZP 01.220 reverse gear control mechanism, which performs the function of operational engagement and disengagement of the driving wheels with the power transmission of the grain thrower. This part is an essential link in the aggregate's kinematic chain, ensuring the transmission of torque from the self-propelling gearbox directly to the wheel to execute the machine's operational movement across the threshing floor area.

In the operating position, the half-clutch is tightly pressed against the wheel hub under the action of the ZP 01.626 power spring, entering into rigid jaw engagement with it. However, its most critical protective function is revealed specifically during equipment transport—to safely roll the grain thrower manually or take it in tow, the operator must pull the half-clutch toward themselves, overcoming the spring resistance, and disengage its jaws from the hub with position fixation. Such manual unlocking disconnects the wheels from the drive, allowing them to rotate freely, which reliably protects the self-propelling mechanism (gearbox) from severe overloads and destruction.

Technical Specifications of the ZP 01.102 Half-Clutch

• Catalog number: ZP 01.102
• Application: ZM-60, ZM-60A, ZM-60U, ZM-90U
• Installation assembly: Rear drive ZP 01.220 (wheel disconnection mechanism)
Part type: Manually operated jaw half-clutch
• Quantity: 1 or 4 pcs. (depending on modification)
• Material: Gray cast iron (Sch 20)
• Weight: 1.79 kg

Visually and structurally, the ZP 01.102 half-clutch is a massive solid cast-iron casting, the shape of which is adapted to perform both power and ergonomic functions. Its main working element is a flat end face on which four powerful rectangular jaws are symmetrically cast. It is these jaws that tightly enter the corresponding slots of the wheel hub when the drive is engaged, transmitting the entire torque from the gearbox to it. On the opposite side, the part features two characteristic massive lugs shaped as convenient side handle-levers. Thanks to this ergonomic shape, the operator can firmly grasp the part with their hands and pull it along the axis, overcoming the resistance of the power spring.

A through, smooth mounting hole containing two special keyways is machined in the center of the cast-iron casting. This engineering nuance is necessary for correct kinematics—keys rigidly fix the half-clutch to prevent it from rotating around the shaft (so that it rotates together with it), while simultaneously allowing it to slide freely back and forth along the axis during manual drive disconnection. Additionally, a threaded through-hole is provided on the outer cylindrical part of the body (between the handles)—it serves for mounting the ZP 01.632 latch bushing with a button, by means of which the half-clutch is locked in the retracted (idle) position during machine towing.

The required quantity of these parts for repair directly depends on the generation of your equipment. Classic models (ZM-60, ZM-60A) feature a self-propelling mechanism based on a gearbox with a differential, which is why the reverse drive layout is asymmetric. For full wheel unlocking, it is sufficient to break the kinematic connection on only one side, and therefore only one (1 pc.) ZP 01.102 half-clutch is installed on the left half-axle of such units. Regarding modernized machines (for instance, our ZM-60U, ZM-90U)—engineers improved the running gear and applied a symmetric drive layout for guaranteed transmission protection during towing. Therefore, on modern grain throwers, these control assemblies are duplicated, and already two (2 pcs.) half-clutches are used for their completion—one for each driving wheel.

Associated Parts of the ZP 01.102 Half-Clutch

Within the kinematic scheme of reverse disconnection, the ZP 01.102 jaw half-clutch operates in constant contact with other power and guiding elements. During its troubleshooting or replacement, the following adjacent components must be checked:

• Wheel hub ZM 01.180 (the mating part of the mechanism featuring slots for gripping the half-clutch jaws)
• Power spring ZP 01.626 (ensures constant pressing of the clutch against the hub)
• Support washer ZM 01.435 (base for spring abutment)
• Reverse shaft ZP 01.625 (the shaft with keys along which the part directly slides)
• Locking assembly: metal latch ZP 01.631, button ZP 01.629, guide bushing ZP 01.632, and small return spring ZP 01.628

The wheel drive mechanism operates under severe conditions, and we fully understand that in many farming operations it eventually undergoes custom modifications. Due to severe wear of original parts, machine operators often resort to quick field upgrades—welding metal onto damaged shafts, boring mounting seats to alternative diameters, changing slot configurations on the hub, or using non-standard keys. Following such forced repairs, a standard factory half-clutch may simply fail to fit onto the modified shaft or its jaws may fail to enter proper engagement. The specialists at Zavod Moroza are prepared for such operational realities—thanks to our robust internal manufacturing capabilities, we can easily adapt the base half-clutch to any modifications of your unit. Upon your request, we will bore the internal hole to an increased shaft diameter, alter the dimensions or positioning of the keyways, and adjust the length and geometry of the working jaws themselves for perfect engagement. Furthermore, if the disconnection assembly on your grain thrower was radically redesigned, we possess all the necessary facilities to cast a part from scratch out of cast iron based on your individual drawings or samples. Our flexible approach allows us to account for any prior interventions in the machine's design and manufacture a part that will flawlessly fit into place and restore reliable control over the running gear.

Buying the ZP 01.102 Reverse Half-Clutch from Zavod Moroza

The manufacturing philosophy of Zavod Moroza is always anchored in the real operational experience of agricultural workers. Threshing floor operation practice shows that the jaw half-clutch experiences heavy torsional loads during the movement of a heavy machine. Over time, its massive working jaws can wear out, round off, or break off due to harsh transmission jolts, and internal keyways can break down from constant vibrations. Utilizing our original ZP 01.102 half-clutch, cast from durable gray cast iron (Sch 20) with strict adherence to geometry, guarantees the restoration of reliable engagement without slippage and easy manual unlocking of the mechanism.

At the same time, we fully recognize that wear within the drive disconnection assembly is rarely isolated. If the mating slots on the wheel hub are severely damaged, the support washer is deformed, or the keyed shaft itself is critically worn, replacing only a single new half-clutch will not eliminate plays entirely. For a comprehensive and rapid solution to the problem, we offer not only these individual cast-iron castings but also the option to acquire fully assembled half-axles or the entire ZP 01.220 reverse gear assembly as a complete unit. This approach will allow for the prompt renewal of the running gear, avoiding complex fitting and restoration of old worn elements.

Contact our sales department for professional technical consultation and order processing. Our engineers will thoroughly analyze your equipment's configuration and accurately assemble the necessary repair kit. Choose proven parts directly from the manufacturer to guarantee the restoration of full control over your grain thrower's movement and ensure its uninterrupted operation under the most demanding operating conditions.