Watch a video of the Rolmako U608 sub soiler in action

Rolmako U608 subsoiler – lower power and fuel requirements

Attain optimal results with reduced power and fuel consumption

The Rolmako U 608 subsoiler is designed for tractors with power ranging from 160 to 310 HP. It is available in working widths of 3 and 4 meters, featuring 6 and 8 working elements, respectively. The maximum working depth is 35 cm, with a recommended value approximately 10 cm below the targeted loosening layer. The minimum required power per tooth is 30 HP, although this may vary based on working depth and local soil conditions. The device comes in variants with screw and hydraulic overload protection. The Rolmako U 608 subsoiler effectively breaks up deeper soil layers, prevents compaction, and positively affects root growth. It is engineered to meet the demands of hard soil and modern tractors, with numerous reinforcements on the frame and a robust three-point suspension tower, ensuring durability and load resistance. Standard equipment includes a coupling for connecting an additional machine, suitable for tractors with high lifting capacity on the rear linkage. This combination allows multiple operations in a single pass, optimizing cultivation for the best results. In soil already loosened by the subsoiler, air and water access is improved, facilitating easier rooting of plants.

Optimization of subsoiling attributed to tine design

The Michel deflected tine subsoiler is recommended for compact soils requiring improved porosity while maintaining an intact surface structure. This subsoiler enhances soil circulation and oxygenation, promoting root growth and plant development. Unlike traditional straight tine subsoilers, the Michel tine subsoiler disrupts the soil with less resistance, preserving the soil surface. Additionally, it reduces water needs by approximately 10% when irrigating. For optimal results, use the Michel curved tine subsoiler on loose soil (neither extremely dry nor wet). The soil structure created by the subsoiler decreases the frequency of subsoiling, making it less of an annual task. Long-term benefits include the necessity of subsoiling only when soil compaction becomes evident or water pooling occurs due to the compaction of paths under tractor wheels. This device is ideal for no-plough cultivation technology. The frame of the U 608 subsoiler allows free passage for the PTO shaft and is compatible with both active harrows and passive cultivation machines. The U 608 subsoiler is an extremely versatile and economically advantageous machine, particularly when used in combination with active harrows.

Rolmako U608 equipped with Michel-type tine – efficient soil loosening implement

Coupling system in the Rolmako U608 subsoiler

Combination of tillage equipment facilitated by a special coupling

The Rolmako U 608 subsoiler with a coupler is optimized for use in combination with additional rear-mounted tools on a specialized suspension system. The machine's frame is uniquely designed to accommodate the PTO shaft, enabling direct operation with tractor-driven devices. When paired with the U 608 subsoiler, tools such as a passive disc harrow, an active harrow driven by a PTO shaft, a disc or compacting roller, and other soil cultivation devices can function effectively. The coupler can optionally feature hydraulic cylinders capable of lifting heavy cultivation machinery. By connecting two cultivation devices in a single pass, users can achieve dual operations simultaneously, thus saving time and costs. The subsoiler’s overload protection adapts to varying cultivation conditions by adjusting the force needed to deflect the tine upon encountering obstacles. The subsoiler is engineered for full, simultaneous subduction of multiple tines, preventing damage from large soil obstacles. The loosener allows for gentle tine return when bypassing obstacles. Machines with four or more tines are equipped with two hydro-accumulators to protect the subsoiler from damage.

The effect of subsoiling on soil quality

Machine construction

1. Three-point linkage

The massive suspension system serves as a supporting element of the mulching harrow. The solid tower of the three-point suspension system makes the machine durable and resistant to loads.

2. Single-beam construction

All tines on a single beam enabled the development of a compact subsoiler design positioned in close proximity to the tractor.

3. Open machine frame

The gap in the load-bearing beam of working elements allows the connection of machines driven by a power take-off shaft through a coupling.

4. Michel's deflected tine

The bevel of the working element ensures optimal penetration angle and stability during operation.

5. PREMIUM working elements

The machine employs internationally recognized soil cultivation systems, utilizing readily available high-quality components from specialized suppliers.

6. Cemented Carbide

Sintered carbide-equipped working elements are recommended for heavy loads on large-area farms or in services cultivating non-stony soils. Carbide plates can extend the operating time of subsoiler working elements by up to seven times.

7. Screw or hydraulic tine protection

Traditional shear bolt or hydraulic with adjustable force required to deflect the tine.

8. Coupler for accompanying machine

The U 608 subsoiler can be outfitted with a active harrow or alternative cultivation machinery. This approach saves time and reduces the number of passes, enabling multiple tasks to be executed in a single operation.

9. Solid oversized machine frame

The solid frame construction is the most critical element of the cultivation machine. The substantial amount of steel used in its construction makes these robust tools capable of utilizing the high power of modern agricultural tractors, ensuring many years of operation on the farm.

10. Quality steel

Achieving a high-quality final product necessitates the use of superior metallurgical materials; therefore, in manufacturing the agricultural machine frame, we utilize fine-grained Swedish steels S500MC and S700MC.

11. Laser processing of sheets, tubes, and profiles

The application of laser techniques in the production of agricultural machinery facilitates precise cutting in high-quality, hard sheets, where conventional chip drilling methods are challenging and costly.

12. Steel shot blasting and powder coating

Proper preparation of machine parts combined with powder coating ensures a durable and robust coating. Additional maintenance and complicated care are unnecessary.

13. Robotic welding

The precision and repeatability of machine components are ensured by automatic welding, guaranteeing the highest quality component manufacturing for you. Our advanced robotic devices enable us to perform the most demanding welding tasks.

Benefits of subsoiling with agriculture machines

Equipment

standard

The frame consists of a square profile section 140x140x10mm, Michel type tine, screw or hydraulic overload protection and coupling to rotary harrow or other tillage machine.

Equipment

optional

Hydraullic adjustment of the coupler

Most frequently chosen accessories

Cultivation tools

Subsoiler tine
Hydraulic overload protection

U608 subsoiler with Michel tine and coupling for tillage equipment

Michel's deflected tine

Rolmako offers a range of subsoiling machines with various versions of working elements. MICHEL type tines equip subsoilers with the symbols U 608 (MICHEL small version), U 614, and U 619. The new series of subsoilers features optimized geometry of the working elements, enhancing soil substrate loosening without negative effects and positively impacting the soil structure. The subsoiler tine, with its curved structure, is specially designed for smooth, gradual soil penetration. Offering minimal resistance, it effectively loosens the soil, ensuring adequate access to water and air for crops. The curved tine shape allows better soil penetration and breaks deep hard coatings, improving moisture retention. The undercut soil is slightly lifted and then returned to its place, achieving better loosening compared to classic straight tines. The tine shape ensures uniform surface cutting over the entire working width. The double-sided chisel extends the working element's service life. Made of high-quality boron steel with a hardness of 50 HRC, the tines are designed for optimal soil loosening efficiency while maintaining low power requirements. The variety of combinations of Rolmako subsoilers with the MICHEL tine makes them the most comprehensive offering on the market.

Hydraulic overload protection

The U 608 subsoiler's simple and unique technical solutions ensure precise operation, user-friendly functionality, and high efficiency. In the version with hydraulic protection, each subsoiler tine is equipped with a hydraulic cylinder connected to an accumulator via cables. The accumulator maintains a specific force for the tine's release upon encountering an obstacle. When the subsoiler hits a stone, hydraulic oil flows to the accumulator, causing the cylinder to close and return to its working position after bypassing the obstacle. Hydraulic overload protection allows for adjustment of the tine's release force by simply increasing or decreasing the pressure. The large-capacity hydraulic accumulator absorbs all substantial impacts affecting the machine.

What soil aeration provides – benefits of subsoiling

Advantages of subsoiling with Rolmako tillage equipment

The primary properties

The concept of the Rolmako U 608 subsoiler with a V frame
Destiny
When should a subsoiler be used?
Advantages of subsoiling
Coupler to the tillage machine
Various configurations available
Oversized agricultural structures
Steel providing an advantage

The concept of the Rolmako U 608 subsoiler with a V frame

- Working elements positioned on one beam
- Improved vegetation development in the lower soil layer
- Capability to operate in all conditions, including wet areas
- Facilitated root penetration
- Enhanced yields
- Superior device quality
- Minimal adjustment points
- High work efficiency and quality
- High machine throughput
- Coupler for accompanying machine with hydraulic adjustment option
- Michel-type working elements with low working resistance
- Frame secured with a shear bolt or hydraulic piston
- Universal frame expandable from 3 m to 4 m
- Expected work effect achieved at a speed of 3 - 7 km/h.

Intended use of the Rolmako U608 subsoiler

Destiny

The subsoiler is engineered to break and loosen the soil to enhance its physical and biological properties. It loosens the layer of soil not reached by plowing, allowing better percolation and aeration, which fosters plant root development. Subsoiling reduces the depth of plowing for several consecutive years, resulting in significant fuel and time savings. It also moves fertilizers to deeper soil layers. This procedure is necessitated by water stagnation in fields during spring. For effective soil crumbling, subsoiling must be done when the soil is relatively dry. Excessive soil moisture leads to smearing rather than crumbling.

When to use the U608 subsoiler – optimal timing for field work

When should a subsoiler be used?

Soil undergoing continuous technological processing (ploughing, machine transport, harvesting) becomes increasingly compacted, preventing water penetration to lower layers. Excessive compaction leading to water stagnation indicates the necessity of a subsoiler to loosen deeper soil layers. Rolmako offers a comprehensive range of machines designed to address excessive water retention on the field surface efficiently. The robust and durable main frames are the hallmark of all Rolmako subsoilers. Utilizing the U 608 subsoiler enhances the soil's microclimate by retaining more moisture and improving ventilation, resulting in better crop yields. The subsoiler's operation ensures water absorption into the soil, promoting healthy and stable crop growth. Rolmako subsoilers are available in multiple varieties, featuring various tine types and overload protection, with distinct supporting frame structures.

Subsoiling with U608 – benefits of using coupling for effective soil work

Advantages of subsoiling:

- Increased yields
- Improved root development
- Enhanced water management through better soil permeation and greater water retention
- Mitigation of fungal disease risks
- Potential for earlier sowing
- Decreased soil pollution
- Reduced pre-winter ploughing costs by shallowing
- Positive impact on future crop cycles.

U608 subsoiler with coupling for farm machinery

Coupler for tillage machine

The machine is equipped with a coupling for a active harrow or other tillage equipment, compatible with II or III category hitches. The coupling is mechanically adjusted as standard, with a hydraulic option available, featuring two efficient hydraulic cylinders for comfortable operation from the tractor cabin. The open frame allows the transfer of the drive shaft to the active accompanying machine, facilitated by the integral three-point suspension system of the subsoiler. For optimal results, it is recommended to use the U 608 subsoiler with short disc harrows, such as the U 693 compact disc harrow from Rolmako. The tillage tools can be easily connected and disconnected from the subsoiler, with straightforward adjustment of the working depth.

Customize your agriculture machine with a wide range of configurations

Various configurations available

Rolmako tillage machines distinguish themselves from competitors due to their superior weight. The company's development team designs agricultural equipment to endure the most challenging working conditions. Rolmako machines efficiently cultivate land in demanding regions worldwide without requiring additional loads. The substantial amount of steel in their construction makes these tillage tools robust, enabling the utilization of high-power modern tractors and ensuring long-term farm investment.

Our farm machinery stands out with optimized weight and durability

Oversized agricultural structures

Made from high-grade Swedish S500MC and S700MC steel

Steel offering a competitive advantage

Increasingly larger and more powerful agricultural tractors subject the structural elements of agricultural machinery to significant stress, pushing them to their operational limits. Modern agricultural structures are expected to demonstrate high resistance to loads and an extended service life. Achieving a high-quality end product necessitates the use of superior-quality steel in production. Accordingly, we utilize high-quality Swedish fine-grained steels S500MC and S700MC, as well as carbon and boron steels for heat treatment and the wear-resistant Hardox. The use of these high-quality steel products ensures our agricultural equipment is highly durable and capable of operating at high speeds with high surface efficiency.