Disc mower PRONAR PDD830
PRONAR PDD830 double-sided disc mower for mounting on the tractor’s rear three-point linkage. The design was based on the PDT 300 -7 disc rear mower model. A new frame was created on the PDD model – the left part of the machine was symmetrically added. Therefore, it has all the kinematic and performance characteristics of a rear mower.
The mower consists of two cutting bars with a working width of 3 [m] on the left and right side behind the tractor. A cutting width of 8.3[m] is achieved when assembled with a PDF front mower with a minimum working width of 3 [m].
The advantage of this design is the ability to adjust the ground pressure of the mower on both sides of the set, which guarantees very good ground following. Thanks to the use of a hydraulic cylinder and three-stage adjustment of the spring relief – 70, 80 and 90 kg, the machine can be adjusted to any type of ground. A clean and precise cut at optimal cutting height are ensured by the Pronar cutter bar. The angular gears that drive the cutterbar have been mounted on the upper beam, that increases the working range (-16º ÷ +18º) while balancing the pressure of the cutterbar on each side. The drive has been adapted to tractors with a PTO speed of 1000 [rpm]. Attention should also be paid to the components in direct contact with the ground, which are made of wear-resistant hardened boron steel. As an option for demanding substrates, it is possible to distance the strip from the ground with interchangeable high mowing skids of 20 and 50 [mm] height.
The mower is equipped with a multi-stage safety system on both sides, starting from the protection of cutting disc modules against collision, through the clutch system of PTO drive shafts, to the system of hydraulic valves controlling the position of the cutting arms at the moment of driving over an obstacle.
Transport of the mower takes place after the mower arms are hydraulically folded into the vertical position. The change of position is carried out hydraulically after the safety interlocks have been disengaged. The machine can optionally be fitted with road lighting.
The cutter bar, thanks to its larger toothed wheels, always meshing with 2 pairs of teeth, which are additionally polished, translates into trouble-free and quiet power transmission between the two discs. The streamlined shape of the mower cutting bar has the effect of reducing fuel consumption during operation, thus reducing the power requirement of the tractor. This also improves the cutting effect.
The protective skids, optional high-mowing skids and discs are made of wear-resistant, hardened boron steel, as are all components in contact with the ground.
Cutting height is adjustable from 30 – 70[mm] by changing the angle of inclination of the cutting bar. Optional high mowing skids available, which are able to distance the bar an additional 20 or 50[mm], from the ground. This finds use in uneven and rocky meadows.
Thanks to the bolted construction of the slat and its modular design, access to the internal components is made easier. This reduces potential downtime and facilitates servicing. A specially designed spanner allows quick replacement of the 120[mm] long blades.
The swath conditioner abrades the wax layer from the plants, which speeds up drying, facilitates aeration and arranges a loose swath. The loosening fingers are cushioned by rubber elements. Metal swath scrapers make it easier to direct the flow of material.
| Working width | 8300* (2 x 3000) | [mm] |
| Swath width min/max | 2 x (1200/2000) | [mm] |
| Working capability | 8** | [ha/h] |
| Weight | 1390 | [kg] |
| Minimum tractor requirements | 88/120** | [kW/HP] |
| Suspension | II cat. ISO 730-1 | |
| Number of discs | 2×7 | [units] |
| Number of knives left/right |
16/12 | [units] |
| Terrain copyng ability – up – down – transvers |
+18 -16 |
[°] |
| Hydraulic outlets required | 1 section of double-sided actions and 1 section of double-sided actions with free-flow |
|
| Size in transport position | ||
| L min/max | 1575 | [mm] |
| S min/max | 2600 | [mm] |
| H min/max | 3950 | [mm] |
* for short-term use
** for a set with a front mower with a working width of min. 3 m.
*** depending on the combination front mower (2.6 to 3.4 m) and the set overlap value of the mowing areas
| STANDARD AND OPTIONAL EQUIPMENT | ||
| 3 transport positions | – | |
| Quick change blades | Standard | |
| PTO 3/8″ 6 teeth | Standard | |
| Replacement blade set | Standard | |
| Document tub | Optional | |
| Coloured hydraulic lines connectors | Optional | |
| Conditioner with increased capacity/td> | – | |
| Left hand drive PTO | – | |
| PTO 540RPM | – | |
| PTO 1000RPM | Standard | |
| Road lights | Optional | |
| Double swath guides | Standard | |
| Metal swath guides | – | |
Operating instructions