shop Hot Sell Sauer JRRS45 JRRS51 JRRS60 JRRS75 Series JRRS45BPC28NNNNN3C2NZA2NFFFJJJNNN Danfoss Hydraulic Open Circuit Piston Pumps

Q1: What are the core performance parameters of the Sauer JRRS series (JRRS45/JRRS51/JRRS60/JRRS75) open circuit piston pumps?

1. Displacement: JRRS45 (45 cm³/r), JRRS51 (51 cm³/r), JRRS60 (60 cm³/r), JRRS75 (75 cm³/r)
2. Pressure Rating: Continuous working pressure up to 310 bar (4495 psi); peak pressure 400 bar (5800 psi)
3. Speed Range: Minimum stable speed 500 rpm; maximum speed 2800-3360 rpm (varies by model)
4. Theoretical Flow: Up to 126 L/min (JRRS45) to 180 L/min (JRRS75) at nominal speed
5. Weight: Approximately 40 kg per unit (net weight) .

Q2: What structural features define the JRRS series hydraulic pumps?

1. Design Type: Axial piston variable displacement structure with 9 reciprocating pistons and a servo-controlled swashplate
2. Material & Durability: Polymer-coated smooth bearings for the swashplate; high-strength alloy pump body with wear-resistant internal components
3. Installation Flexibility: Standard SAE B/C flange connections (2/4 bolts) and multiple shaft options, enabling easy integration with diverse machinery .

Q3: Which application fields and equipment are these pumps suitable for?

1. Core Machinery: Construction equipment (excavators, pavers, rollers, bulldozers), industrial machinery (metallurgical equipment, hydraulic stations), and concrete pumps/mixers
2. System Compatibility: Optimized for open-circuit hydraulic systems; supports multi-circuit power transmission for complex machinery operations.

Q4: What control modes and customization options are available for the JRRS series?

1. Standard Controls: Pressure-compensated control and load-sensing control (model-specific: e.g., “PC” control code for JRRS45BPC28…)
2. Displacement Adjustment: Equipped with an adjustable displacement limiter (FFF code) for 0-100% flow regulation
3. Optional Features: Customizable pressure settings (e.g., 250 bar preset for some models), shaft configurations, and mounting orientations.

Q5: What after-sales support and delivery terms apply to these pumps?

1. Warranty: 1-year manufacturer’s warranty for defects (covers parts and labor)
2. Services: Online technical consultation, maintenance guidance, and quick supply of repair kits
3. Packaging & Delivery: Export-standard wooden box packaging; lead time 15-30 days (stock availability reduces delivery to 7-10 days)
4. Payment Terms: Flexible options (L/C, T/T, Western Union) with MOQ of 1 unit.

Q6: How does the JRRS45BPC28NNNNN3C2NZA2NFFFJJJNNN model differ from other JRRS variants?

• “PC”: Pressure-compensated control mode
• “28”: Preset pressure setting (280 bar)
• “FFF”: Adjustable full-range displacement limiter
• “C2NV”: Shaft type and seal configuration for harsh working environments
• Compatibility: Direct interchangeable with Sauer Danfoss original models (e.g., part number 83047580).