SD90-C5 RS Crawler Bulldozer

Expert Evaluation

Applicable Working Conditions

• Mining
• Agriculture, Forestry and Water Conservancy
• Quarrying & Concrete
• Airport Construction

1. Power System

• Electronically controlled engine, compliant with China’s National Non-road Mobile Machinery Stage III emission standards, featuring high reliability.
• Intake-type temperature-controlled fan with reverse self-cleaning function, ensuring high efficiency and energy saving.

2. Transmission System

• Equipped with a hydraulic torque converter with lock-up function. Output torque adjusts with load changes, providing strong load adaptability. It uses hydraulic transmission at low speeds and mechanical transmission at high speeds, saving 10%-15% fuel and delivering excellent fuel economy.
• Normally closed brake with parking brake function, effectively preventing vehicle rollback on slopes for high safety.

3. Operational Performance

• The travel control adopts an electronically controlled single-handle device, enabling the “manual-automatic integrated fingertip shifting” function.
• The working device control uses a pilot single-handle device, ensuring flexible operation, light and comfortable use, and high reliability.

4. Driving & Riding Environment

• Ergonomic cab with spacious interior and excellent visibility.
• Fully sealed cab effectively isolates noise, reducing driver’s ear noise to as low as 80 dB, meeting EU standards.
• High-power heating and cooling air conditioner with excellent cooling and heating performance; air outlets are arranged humanely for more comfortable driving.
• Interior uses rapid-molding parts (roof: ABS + PVC vacuum forming), which are high-grade, environmentally friendly, and provide an excellent riding experience.

5. Work Adaptability

• Equipped with a heavy-duty chassis, adapting to harsher working conditions with a longer service life.
• Long ground contact length and high ground clearance ensure stable driving and excellent passability.
• Track rollers adopt K-type elastic suspension, increasing track ground contact area for greater traction and stability on uneven surfaces.
• Standard high-brightness LED work lights enhance illumination, making night construction safer and more reliable.

6. Maintainability

• Enclosed safety channel design for safer and more convenient maintenance.
• The whole machine adopts modular design, enabling easy assembly/disassembly and simple repair.
• Electrical wiring harness uses seamless corrugated pipes and splitters for wiring, providing high protection level.
• Core electrical and hydraulic components are globally sourced for high reliability.