Seedbed cultivator U659

Seedbed cultivator U659

U659 is a lightweight Seedbed cultivator that prepares the seedbed and enables sowing in a single pass on light and medium soils. The choice of tine arrangement and rear roller allows the machine to be adapted to field conditions.

What is the U659 seedbed cultivator used for?

The U659 combination works together with a separate mounted seed drill, allowing you to reduce the number of passes needed to prepare the field and carry out sowing.

The U659 does not replace a stubble cultivation tool. It is also not suitable for heavily stony fields or plots with large amounts of shallowly ploughed-in crop residues, which could hinder material flow between the tines. The machine is intended primarily for work after pre-sowing or winter ploughing on light and medium soils.

How does the U659 seedbed cultivator work?

The U659 prepares the soil in three consecutive working zones, with the attached seed drill working directly behind them:

• The front string diagonal roller crushes clods on the surface and provides initial levelling of the field, helping the subsequent components work evenly.
• Two or three rows of spring tines loosen the seeding layer, break up remaining clods, and destroy young weeds. Vibrations of the tines assist in crumbling the soil and support their self-cleaning.
• The rear finishing roller levels the surface, crushes remaining lumps, and firms the soil again. This creates a more stable layer beneath the seeds, leaving looser soil above it.
• The attached seed drill places the seeds directly into the prepared soil. The hydraulic lift allows it to be raised on headlands and during transport, and draws the raised machine closer to the tractor.

The front and rear rollers are connected by a pivoting linkage, allowing them to jointly follow ground contours. Their position relative to the tine section determines the working depth, which is adjusted mechanically on both sides of the combination.

Additional equipment for the U659 combination

The type and arrangement of tines and the rear finishing roller should be selected to match the soil structure, density, and typical moisture level.

Tine configuration

The three-row version is available only with straight SU tines.

How to choose the rear roller for the U659 combination?

Maintenance-free bearing units for the rollers are worth choosing for intensive use of the combination. They do not change the cultivation effect, but reduce the number of points requiring regular lubrication.

How to choose the right U659 version for your tractor, seed drill, and working conditions?

When selecting the U659, you need to consider not only the power requirement of the combination, but also the weight of the seed drill, the seed material, and the chosen roller. The tractor should provide the required lifting capacity of the rear three-point linkage, stability of the set, the possibility of front axle ballasting, and a hydraulic outlet to control the lift.

• The 2,5 and 2,7 m versions work well on smaller plots, with narrower entrances, and with tractors of lower power and lifting capacity.
• The 3,0 m width is the most versatile choice and matches many popular seed drills. Models up to 3,0 m work with category II or III three-point linkage.
• The 4,0 m version is designed for more efficient work on larger fields, requires category III three-point linkage, and puts the greatest load on the lift.

The width of the seed drill should match the working width of the combination. Before connecting the machines, you also need to check the pin spacing, the position of the top link, and the settings of the lift hooks and wheel supports. The adjustable mounting allows the U659 to be adapted to various mounted seed drills, but does not exempt you from checking their weight and geometry.

You also need to consider how you will access the field. The U659 in the 4,0 m width has a rigid frame, while only combinations up to 3 m wide can be transported on public roads. In that case, the seed hopper should be empty, its wheels resting on the supports, and the lift secured against dropping.

When to choose the U659, and when another Rolmako machine?

The U659 is worth choosing when the farm has a suitable mounted seed drill and works mainly after ploughing on light or medium soils. In other conditions, a better solution may be:

• Compact cultivator U684 or U684 PRO – when the field is uneven, hard, or heavily cloddy and requires more intensive levelling and crushing. The U684 can also work together with a seed drill, but has a heavier construction and more variants of working sections.
• Compact disc harrow U693 – when the cultivation-drilling set is to work with a larger amount of plant residues. The discs cut them and mix them with the soil, so the U693 with a seed drill coupling is better suited to reduced tillage than the tine-based construction of the U659.
• OptiCrop pneumatic seed drill – when, instead of combining a cultivator with an existing seed drill, the farm needs a complete machine with its own hopper, metering system, cultivation section, and sowing coulters.