Wirax Z

Purpose and Design Features

The Wirax Z-169 rotary mower (and its variants Z-173, Z-175) is an implement designed for mowing high-yield grasses and cultivated meadow crops with subsequent windrow formation. This equipment belongs to the class of drum rotary mowers intended for mounting on small and medium-sized tractors, making it essential for farms ranging from 10 to 50 hectares.

Drive and Cutting Unit

The core of the system is a reinforced gearbox that transmits torque from the tractor's PTO shaft (540 rpm) to two rotating discs. Each disc is equipped with three hardened spring-steel blades that pivot under centrifugal force during operation. This design allows for efficient stem cutting without damaging the root system, which is critical for perennial grasses.

Mounting and Performance

The Wirax Z-169 features a working width of 1.65 meters, providing a productivity rate of up to 1.5 hectares per hour at optimal tractor speeds. A three-point hitch system (Category 1 or 2) allows for quick transition from transport to working position. The unit weighs approximately 350 kg, requiring ballast weights on the front of lower-horsepower tractors (25–30 hp and up).

Safety and Operational Reliability

One of the key engineering features is the presence of a damping safety release. If a cutting disc hits an obstacle such as a rock or stump, the frame automatically deflects backward, preventing damage to the gearbox and cutting drums. All drive components are protected by sealed covers to minimize the ingress of dust and crop residues into the mechanisms.

Application in Agricultural Operations

The primary use case for the Wirax Z is hay and green mass harvesting for fodder production. Due to the adjustable cutting height via the positioning of support skids, the machine adapts to terrain irregularities. Windrow formation occurs as the discs rotate toward each other, facilitating subsequent collection by rakes or balers.

Maintenance and Repairability

Maintenance of the mower is simplified by the high degree of standardization for most components (bearings, belts, blades). Daily maintenance is limited to lubricating the PTO cross joints and inspecting the condition of the cutting elements. The modular assembly allows for on-field repairs without the need for specialized service teams.

Why Choose Wirax Z

The choice of this model is driven by the optimal balance between price and performance. Unlike heavy-duty professional disc mowers, the Wirax is focused on maximum repairability and the availability of spare parts, making it an excellent choice for small and medium-sized farms looking to minimize operating costs per hectare.