ERR100BBS3120 Danfoss ERR Series 45 Piston Pump 310 Bar

Product Overview

Technical Specifications

• Product Series: Danfoss Sauer Series 45 E-frame, swash-plate type variable displacement axial piston pump for open circuits
• Model 1: ERR100BBS3120NNN3S1APA1NNNNN
  • Geometric Displacement: 100 cm³/r
  • Rated Continuous Working Pressure: 310 bar
  • Peak Intermittent Pressure: 400 bar
  • Maximum Continuous Operating Speed: 2450 rpm
  • Maximum Allowable Speed: 2880 rpm
  • Theoretical Rated Flow: 245 L/min (@2450 rpm)
  • Control Mode: Load Sensing + Pressure Compensation
  • Shaft Extension: Standard spline shaft
  • Mounting Flange: SAE C 4-bolt standard flange
• Model 2: ERR147CLS202NNN3S1RPA1NNNNNNNNNN
  • Geometric Displacement: 147 cm³/r
  • Rated Continuous Working Pressure: 260 bar
  • Peak Intermittent Pressure: 350 bar
  • Maximum Continuous Operating Speed: 2100 rpm
  • Maximum Allowable Speed: 2475 rpm
  • Theoretical Rated Flow: 308.7 L/min (@2100 rpm)
  • Control Mode: Load Sensing Control
  • Shaft Extension: Standard spline shaft
  • Mounting Flange: SAE C 4-bolt standard flange
• Housing Material: High-strength gray cast iron
• Main Seal Material: FKM fluororubber
• Reference Weight: Approx. 51.3 kg (ERR100), approx. 55 kg (ERR147)
• Compatible Fluid: ISO VG32 / VG46 / VG68 high-quality anti-wear hydraulic oil
• Operating Oil Temperature Range: -20℃ to 90℃

Key Technical Advantages

1. Dual Servo Swash Plate Variable Mechanism with Load Sensing On-demand Supply

   The swash plate variable mechanism driven by dual servo pistons delivers fast response and smooth displacement adjustment. The load sensing control mode matches the flow and pressure demand of the system load in real time, outputting hydraulic power on demand, eliminating energy loss and oil temperature rise caused by unnecessary overflow. Compared with fixed displacement pump systems, it reduces energy consumption by more than 20% and significantly improves overall fuel economy.

2. High-Pressure Heavy-Duty Design with Excellent Shock Load Resistance

   Core hydraulic components are paired with high-strength wear-resistant materials, and the cylinder block and valve plate adopt a spherical fitting structure for uniform pressure distribution. The ERR100 specification reaches 310 bar rated continuous pressure and 400 bar peak pressure, withstanding instantaneous shock loads during machinery startup and commutation. It maintains stable pressure output under heavy load and frequent reversing conditions, adapting to complex field working environments.

3. Micron-level Precision Machining with High Volumetric Efficiency and Low Leakage

   Core friction pairs including cylinder bore, valve plate and slipper are processed with CNC honing and super-finish grinding, with flatness and roughness controlled at micron level. Combined with optimized kidney-shaped valve port design, it reduces internal leakage from high-pressure zone to low-pressure zone, achieving volumetric efficiency above 93% under rated working conditions, superior mechanical efficiency over equivalent products, and excellent low-temperature starting performance.

4. Standardized Interface Design for 100% Direct Damage-free Interchangeability

   Mounting flange dimensions, shaft parameters, port positions and control ports fully match the drawing standards of original Danfoss Series 45 E-frame pumps. It can directly replace original ERR100 and ERR147 series pumps without modifying mounting brackets, connecting pipelines and control circuits, greatly shortening equipment downtime and reducing retrofitting costs and working hours.

5. Full Working Condition Factory Testing for Stable and Reliable Performance

   Each pump passes 100% simulated bench test before delivery, covering multiple inspection items such as rated pressure holding, peak pressure shock, high and low speed cycle, oil temperature rise verification and internal leakage detection. The housing is integrally cast with high-strength cast iron for strong vibration and impact resistance, operating stably for a long time in dusty and high-vibration construction sites and reducing on-site failure risks.

Application Areas

• Construction machinery: Hydraulic systems for backhoe loaders, wheel excavators, skid steer loaders, forklifts, rotary drilling rigs and other mobile equipment
• Mining equipment: Hydraulic power units for open-pit mine loaders, underground auxiliary transport vehicles and mining crushing equipment
• Agricultural machinery: Hydraulic systems for modern agricultural equipment such as large silage harvesters, cotton pickers and self-propelled sprayers
• Industrial hydraulic stations: Fixed hydraulic power units for metallurgical auxiliary equipment, machine tool hydraulic systems and waste treatment equipment
• Port logistics equipment: Loading, unloading and transport machinery such as container reach stackers, stackers and port tractors

Expert Maintenance Tips

1. Installation Calibration and Air Exhaust Requirements

   Ensure the coaxiality error between the pump shaft and prime mover output shaft is ≤0.1mm during installation, to avoid premature wear of shaft seal and bearing caused by excessive radial force. Thoroughly clean the ports and flange surface before installation to prevent impurities such as iron filings and dust from entering the pump body. Fill the pump housing with clean hydraulic oil and exhaust internal air through the housing exhaust port before first startup to avoid dry friction damage to the valve pair and slippers.

2. Hydraulic Oil and Cleanliness Specifications

   High-quality anti-wear hydraulic oil compliant with ISO VG46 is recommended, with oil cleanliness reaching NAS grade 8 or above. The system must be equipped with a return filter with accuracy no less than 10μm. Ensure the suction pipeline is perfectly sealed to avoid air intake and cavitation, which would cause early pitting of valve plate and cylinder block. Normal operating oil temperature should be controlled between 30℃ and 70℃; long-term operation above 90℃ will accelerate seal aging and oil deterioration, and a cooling device is required for high-temperature working conditions.

3. Regular Maintenance Interval

   Check oil level and cleanliness every 500 working hours, inspect pipeline leakage and loose connections, and clean the suction filter. Replace hydraulic oil and return filter every 2000 working hours, and clean tank bottom deposits at the same time. It is recommended to disassemble and inspect the wear condition of internal friction pairs, check bearing clearance and variable mechanism flexibility every 4000 working hours to predict failure risks in advance.

4. Common Troubleshooting Key Points

   If output pressure is insufficient, first check whether the suction filter is clogged or the system relief valve setting is too low, then inspect whether the load sensing control spool is stuck. If abnormal noise and vibration occur, focus on checking whether oil is aerated, bearing is worn, or installation coaxiality exceeds the standard. Do not operate the pump with oil shortage or air intake for a long time, to avoid irreversible damage to the pump body.