Soil compaction below the plough working depth is a significant issue, exacerbated by increasingly heavier tractors and agricultural machinery. The multi-purpose subsoiler U 638, proposed by Rolmako, addresses this problem. It is a universal cultivation machine suitable for soil cultivation in early autumn and spring, post-harvest plowing, and soil aeration and regeneration. The inclusion of a 400 mm wide side wing shares enhances its efficiency as a post-harvest tool. The machine can be quickly converted from a stubble cultivator to a deep loosening system appropriate for a subsoiler. The U 638 is designed with uncompromising quality, featuring top-class components found only in the most expensive machines on the market. The subsoiler version with a coupling for another tillage machine is designated as U 632.
Subsoiler and cultivator combined into a single tillage machine
Versatility unmatched by other tillage machines
The soil structure is severely compromised, with insufficient oxygen levels, leading to decreased cultivation income. The Rolmako multi-purpose subsoiler addresses this issue by facilitating deep soil loosening, allowing oxygen penetration. Weeds are significantly reduced, resulting in increased yield. The Rolmako U 638 and U 632 subsoilers are designed to meet the needs of modern agriculture and assist farmers in soil preparation tasks. The machine comes standard with double spring protection and working elements featuring sintered carbide. Both models share the same components and overload protection. The U 638 is a two-beam subsoiler/cultivator with a tillage roller and an optional mulching roller, while the U 632 is a single-beam subsoiler with a coupling for a tillage machine. The open frame structure enables the attachment of active machines, such as a active harrow or other accompanying machine.
Multi-purpose subsoiler for soil loosening and post-harvest work
The multi-purpose subsoiler is characterized by the lowest power requirement per working element. The strongest available spring protection in the Rolmako offering performs optimally during the most challenging cultivation moments. The U 638 and U 632 subsoilers exceed the functionality of standard subsoilers. The Atlas tine is equipped with an overload system featuring two robust springs. An effective mulching roller, combined with an additional tillage roller, prepares the machine for deep loosening and post-harvest cultivation. Depending on the installed working elements, the multi-purpose subsoiler can perform various cultivation tasks. The soil is loosened at depths ranging from 15 cm to 35 cm, depending on the previous crops and soil type, using carbide-tipped cutting skids. The application of a 400 mm undercutter converts the subsoiler into a stubble cultivator for stubble cultivation at depths of up to 15 cm. High-quality working parts allow for reduced soil cultivation costs. The Atlas tine enables faster, more efficient work and minimizes machine maintenance costs. Replacing working elements has never been so easy.
Machine construction
1. Three-point linkage
2. Dual-beam frame construction
3. ATLAS tine
4. Side wing shares 400 mm
5. PREMIUM working elements
6. Cemented carbide in standard
7. Spring overload protection
8. Adjusting of the working depth
9. Additional mulching roller
10. Tillage roller
11. Spring comb beam
12. Automatic arm lock
13. Solid oversized machine frame
14. Quality steel
- Frame built from a square profile 100 x 100 x 8mm, Atlas tine (plough beam 35 x 70mm ended with cemented carbide chisel). The tine is protected from excessive overload by double-spring protection. The basic version of machine equipped with pipe roller Ø 500 mm. Hydraulic folding machine in trailed version is equipped with 520/50-17 wheels and pneumatic brake (with the trailer section in front of the roller).
- Hydraulic brake
- Side wing shares – cemented carbide
- Supporting wheels for trailed version
- Delimbe aftercrop seeder
- APV aftercrop seeder
- Front reflective plates (mounted machines)
- Front LED lighting beam (trailed machines)
- Rear LED lighting beam
- Backlit license plate frame with lighting
- Maintenance-free roller bearing unit
- Spring comb beam
- Additional mulching roller
- String roller with flat bars Ø 460 mm
- String roller with cogged bars Ø 460 mm
- Packer cogged roller Ø 460/550 mm
- Tubular-ring roller Ø 450 mm
- Crosskill roller Ø 400/500 mm
- Ring roller Ø 500/600 mm
- Spring roller Ø 470/550 mm
- Rubber roller Ø 500 mm
- Tire roller Ø 600 mm
- Roller of steel rings 48-52HRC Ø 600 mm
- T-ring roller Ø 500/600 mm
- U-ring roller Ø 540 mm
- Tandem pipe roller Ø 400 mm plus string roller Ø 400 mm
- Tandem U-ring roller Ø 540 mm
- Prismatic roller ORION Ø 500 mm
Most frequently chosen accessories
Cultivation tools
ATLAS tine
The U 638 and U 632 subsoiler tines are distinguished by exceptional wear resistance, achieved through the use of premium materials. The standard equipment for the Atlas tine includes a chisel, skid, and beam cover, with the Side wing shares available as an option. All wear-exposed parts of the Atlas tine are finished with carbide elements, and consumable parts are hardfaced to extend lifespan and minimize machine servicing time.
Atlas carbide working elements as standard:
- Higher work culture
- Minimal loss of time related to parts replacement
- Reduced need for mounting screws
- Minimizing additional machine passes
- Operating time extended by 5 to 10 times.
Spring overload protection
The U 638 subsoiler features a mechanical protection system with a double spring. In the event of contact with a stone, the tine and leg swing away, compressing the spring. Once the obstacle is cleared, the working elements automatically return to their working position. Each tine independently responds to obstacles, with the spring minimizing collision forces and ensuring immediate return to the precisely set working position. Spring protection for the tines is part of the standard equipment.
Mulching roller
The mulching roller is installed as an option. The working depth of the roller is set independently of the roller behind it. Adjustments are made quickly, accurately, and steplessly using a crank. This roller aggressively mixes the soil behind the straw in deeper layers. It crushes clods while maintaining soil quality as after preparation before sowing. Due to the large number of tines and their spiral arrangement, the mulching roller does not differ in efficiency and quality of work from rollers working in tandem. The mulching roller, in combination with other rear rollers, achieves excellent cultivation results.
The primary properties
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 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 614 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.
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
Stubble cultivation
Conducting both shallow and deep soil cultivation with a single device facilitates savings in investment and operating costs. Equipped with shares featuring undercutting wings, the Rolmako cultivator excels in preliminary shallow soil cultivation, providing sufficient space for the flow of significant amounts of post-harvest residues and soil. Optional wing shares (400mm), like all working elements of the U 638 and U 632 systems, are equipped with cemented carbide. The machine stands out not only in terms of durability but also in the quality of work with post-harvest residues. Adjusting the mulching roller ensures effective mixing of soil with straw.
ATLAS tine
The U 638 and U 632 subsoiler tines are distinguished by exceptional wear resistance, achieved through the use of premium materials. The standard equipment for the Atlas tine includes a chisel, skid, and beam cover, with the Side wing shares available as an option. All wear-exposed parts of the Atlas tine are finished with carbide elements, and consumable parts are hardfaced to extend lifespan and minimize machine servicing time.
Atlas cemented carbide working elements as standard:
- Higher work culture
- Minimal loss of time related to parts replacement
- Reduced need for mounting screws
- Minimizing additional machine passes
- Operating time extended by 5 to 10 times.
Spring overload protection
The U 638 subsoiler features a mechanical protection system with a double spring. In the event of contact with a stone, the tine and leg swing away, compressing the spring. Once the obstacle is cleared, the working elements automatically return to their working position. Each tine independently responds to obstacles, with the spring minimizing collision forces and ensuring immediate return to the precisely set working position. Spring protection for the tines is part of the standard equipment.
Mulching roller
The mulching roller is installed as an option. The working depth of the roller is set independently of the roller behind it. Adjustments are made quickly, accurately, and steplessly using a crank. This roller aggressively mixes the soil behind the straw in deeper layers. It crushes clods while maintaining soil quality as after preparation before sowing. Due to the large number of tines and their spiral arrangement, the mulching roller does not differ in efficiency and quality of work from rollers working in tandem. The mulching roller, in combination with other rear rollers, achieves excellent cultivation results.
Coupler for accompanying machine
The U 632 subsoiler features a coupling for a cooperating machine, enabling subsoiling in conjunction with a disc or active harrow and other machines equipped with a three-point tractor hitch. The machine depicted in the photos combines a subsoiler with a compact disc harrow, offering a working width of 3.0 meters and equipped with a heavy rubber roller. The combined machine weight is 1800 kg. The disc harrow roller ensures operational stability and maintains the predetermined depth of cultivation. The subsoiler loosens the soil beneath the plowing depth, while the discs handle post-harvest processing.
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.
Oversized agricultural structures
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.
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.
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