Construction Machinery
Maximum Power for Construction Giants
The Construction Machinery industry serves as the backbone of global infrastructure development, where heavy equipment must perform reliably under extreme loads and harsh site conditions. Toleng Hydraulics delivers tailored hydraulic solutions engineered to meet these rigorous operational demands.
In large-scale earthmoving and material handling applications, modern construction machinery achieves unprecedented efficiency and precision through intelligent hydraulic control systems. Toleng Hydraulics supplies high-performance hydraulic cylinders and rotary joints for excavators, loaders, and cranes—currently supporting equipment operating at sites worldwide with lifting capacities exceeding those typically required for standard construction projects.
Toleng Hydraulics also develops and manufactures specialized hydraulic cylinders and power units for compact equipment and various construction machinery applications, continuously expanding its technological footprint across this dynamic industry sector.
Application Example: On a major highway expansion project, a road paver and a fleet of road rollers worked in tandem to lay and compact 20 kilometers of asphalt pavement. The paver’s hydraulic screed cylinders ensured consistent mat thickness and width, while the rollers’ vibration hydraulic systems delivered compaction forces of over 300 kN per drum. The project demanded precise control to achieve specified density and smoothness tolerances. Over a four-month construction period, the equipment operated 12 hours daily, with hydraulic cylinders performing over 50,000 compaction cycles without performance degradation. The high-temperature-resistant sealing systems maintained reliability even when handling asphalt mix at temperatures exceeding 160°C, requiring only routine greasing every 40 hours of operation.
- Advanced Measurement Systems – Contactless, integrated, and redundant position & pressure sensors for precise control on excavators, graders, and drilling rigs
- Specialized Hydraulic Cylinders – Custom cylinders for concrete pumps, crushers, dozers, and milling machines, including drive, gripper, torque, and telescopic variants
- End Position Damping & Proximity Control – Smart damping and proximity solutions for smooth, automated machine operations across rollers, pavers, and boring equipment
- Telescopic Tubes & Rotary Unions – Durable telescopic systems and high-pressure rotary unions for mobile crushing plants, drilling rigs, and concrete boom applications
- System Solutions for Graders & Earthmoving Equipment – Integrated hydraulic and measurement systems for precise blade control, articulation, and fine grading
- Custom Painting & Surface Finishing – Protective and aesthetic coatings tailored to customer specifications for all machinery types
References + Applications
Road Roller Hydraulic Cylinders
At a major highway expansion project in Southeast Asia, a fleet of 20-ton tandem road rollers was deployed to compact 35 kilometers of asphalt pavement. The project required precise compaction control to achieve specified density and smoothness tolerances while maintaining high production rates during the dry season.
Each roller was equipped with multiple hydraulic cylinders performing critical functions:
Steering cylinders enabled precise articulation for tight turns along winding road sections
Vibration system hydraulic cylinders maintained consistent drum excitation forces
Scraper cylinders ensured continuous cleaning of drum surfaces to prevent asphalt buildup
The vibration system cylinders operated under extreme conditions, withstanding continuous vibration frequencies of 40-50 Hz and compaction forces exceeding 300 kN per drum. The hydraulic cylinders were required to maintain leak-free performance while handling asphalt mix temperatures reaching 160°C.
Over a five-month construction period, the roller fleet accumulated more than 6,000 operating hours. Each hydraulic cylinder completed over 80,000 compaction cycles without performance degradation. The high-temperature sealing systems, featuring fluorocarbon (FKM) seals and advanced heat-resistant wiper rings, maintained reliable operation despite continuous exposure to hot asphalt and abrasive dust.
Key performance highlights:
Compaction force: 300 kN per drum
Operating temperature: Up to 160°C (asphalt contact)
Vibration frequency: 40-50 Hz continuous
Cycle life: 80,000+ compaction cycles
Maintenance interval: Weekly greasing points inspection
Leakage performance: Zero external leakage throughout project duration
The cylinder rod surfaces, protected by hard chrome plating and advanced wiper systems, showed minimal wear after five months of operation. The steering cylinders maintained precise articulation control with zero drift, ensuring accurate roller tracking along pavement edges. The success of this project demonstrated the durability and reliability of hydraulic cylinders specifically engineered for high-vibration, high-temperature compaction applications.
Mini Excavator Hydraulic Cylinders
At a residential utility installation project in a densely populated urban area in Germany, a fleet of 3.5-ton to 5-ton mini excavators was deployed for trenching, water line installation, and landscaping work. The project required compact machinery capable of operating in narrow spaces between existing structures while delivering sufficient digging force and precise control.
Each mini excavator was equipped with a complete set of hydraulic cylinders engineered for space-constrained applications:
Boom cylinders provided lifting force for deep trenching operations
Arm cylinders enabled precise crowd control for accurate grading
Bucket cylinders delivered break-out force for digging in compacted soil
Blade cylinders controlled the dozer blade for backfilling and site leveling
The hydraulic cylinders featured compact designs with integrated port relief valves to protect against shock loads during digging. Despite their reduced dimensions, the cylinders delivered impressive performance: boom cylinders with 70 mm bore diameter generated lifting forces up to 45 kN, enabling the mini excavators to handle Class 2 and Class 3 attachments including hydraulic breakers and augers.
Over an eight-month project duration, the mini excavator fleet accumulated more than 5,000 operating hours across multiple job sites. The cylinders demonstrated exceptional reliability in confined urban environments, where dust, vibration, and frequent articulation were constant challenges.
Key performance highlights:
| Parameter | Boom Cylinder | Arm Cylinder | Bucket Cylinder |
|---|---|---|---|
| Bore Diameter | 70 mm | 60 mm | 55 mm |
| Rod Diameter | 40 mm | 35 mm | 30 mm |
| Stroke Length | 600 mm | 500 mm | 400 mm |
| Operating Pressure | 210 bar | 210 bar | 210 bar |
| Max Lifting/Breakout Force | 45 kN | 35 kN | 28 kN |
| Cycle Rate | 8-12 cycles/minute | 10-15 cycles/minute | 12-18 cycles/minute |
Sealing system performance:
Dust protection: Heavy-duty polyurethane wiper rings prevented contaminant ingress during trenching operations
Leak-free operation: Zero external leakage throughout 5,000+ operating hours
Low friction seals: Reduced starting pressure to ≤0.3 MPa for smooth, precise control in tight spaces
Temperature range: Reliable operation from -10°C to +70°C across seasonal weather changes
Maintenance and durability:
Lubrication interval: Weekly greasing of pivot points
Rod surface condition: Minimal wear after 5,000 hours due to hard chrome plating (25 μm thickness)
Seal replacement: Not required during project duration
Downtime attributed to cylinders: Less than 1% of total operating time
The compact cylinder designs allowed the mini excavators to maintain a tail swing radius of less than 1 meter, enabling safe operation adjacent to building foundations and existing utilities. Operators reported excellent responsiveness and precise control, particularly during fine grading work around manholes and utility boxes.
The project was completed two weeks ahead of schedule, with project managers citing equipment reliability as a key factor. The mini excavators’ hydraulic systems required only routine maintenance, demonstrating that properly engineered small-bore cylinders can deliver the same reliability as their larger counterparts in demanding applications.
Some of our Applications
- Mini/Small Excavator
- Mobile Crushing Plant
- Medium/Large Excavator
- Grader System Solutions
- Concrete Pump
- Road Rollers
- Pavers
- Milling Machine
- Dozer
- Rotary Drilling Rig