Applicable to :

GD535-5

• Part Number: 705-52-20990

• Model: SAR2-40+20

• Displacement: 40.2 cm³/rev + 20.4 cm³/rev

• Pressure Rating: Rated 210 kg/cm² / Maximum 250 kg/cm²

• Speed Range: 800 to 3000 r.p.m.

• Manufacturer: HUNG RONG HYDRAULIC TECH. CO., LTD.

This dual-section gear pump is specifically engineered as a direct-fit replacement for KOMATSU Motor Graders, with precise optimization for the Komatsu GD535-5 model. It serves as the central power source in harsh environments such as heavy-duty road construction, infrastructure development, and municipal road maintenance. The dual-pump configuration simultaneously supports two critical vehicle functions:

• Steering Circuitry: Supplies stable fluid flow to the hydraulic steering system for responsive vehicle control and precise maneuverability on rugged terrain.

• Implement Circuitry: Provides consistent delivery to power grader attachments, ensuring accurate blade adjustments and dependable grading control under heavy-duty loads.

• Optimal Flow Management: The dual-displacement engineering allows a single pump housing to simultaneously supply two independent hydraulic circuits, optimizing system efficiency by separating high-demand and low-demand flows.

• OEM Compatibility: Meets stringent Komatsu OEM engineering specifications, guaranteeing a direct-fit installation and seamless mechanical integration without modifications.

• High-Pressure Resilience: Robust construction utilizes high-pressure capability up to 250 kg/cm² to ensure consistent performance and extended service life under demanding work conditions.

• Broad Speed Adaptability: Delivers reliable fluid flow across a wide operating range of 800 to 3000 r.p.m., adapting smoothly to varying engine speeds.

• Proven Fleet Solution: Offers fleet operators and equipment service providers a dependable, highly cost-effective alternative to original components, reducing overall maintenance overhead.