B1-300 Hydraulic Axial Piston Motor Pump for Excavator Crane and Road Machinery

Product Overview:
The B1-300 Five-Star is a high-performance swashplate design axial piston pump engineered for demanding open circuit hydraulic systems. This variable pump delivers exceptional power density, reliable operation, and precise control under extreme loads. With a displacement of 300 cm³/rev and robust construction, it provides stepless flow adjustment for heavy-duty mobile and industrial applications requiring high flow rates and pressure stability. This unit is a direct, high-quality replacement solution for original equipment in various construction and mining machinery.

Technical Specifications:

• Model: B1-300 Five-Star

• Type: Swashplate design, variable axial piston pump

• Displacement: 300 cm³/rev (steplessly variable)

• Nominal Pressure: 350 bar (continuous operation)

• Maximum Pressure: 400 bar (peak)

• Maximum Speed: 2100 rpm

• Flow Rate: Up to 630 L/min (at max speed)

• Control Options: Load sensing, pressure cutoff, power control, hydraulic pilot, electro-proportional

• Design: For open circuit hydraulic systems

• Mounting Flange: SAE / ISO 3019-1 standard

• Port Connection: SAE flange ports

• Weight: Approximately 110 kg

• Material: Robust cast iron construction with hardened steel components

• Temperature Range: -20°C to +90°C

Core Features:

• Robust Swashplate Design: The proven swashplate design with cast iron construction ensures reliable operation, excellent efficiency (volumetric efficiency up to 95%), and long service life in demanding continuous operation .

• High Flow Capacity: With 300 cm³/rev displacement, delivers massive hydraulic flow up to 630 L/min for large-scale machinery operations .

• Multiple Control Options: Available with various control types including load sensing, pressure cutoff, power control, hydraulic pilot, and electro-proportional for precise customization to specific application requirements .

• Stepless Variable Displacement: Output flow is infinitely variable between maximum and zero, offering precise flow matching to reduce energy consumption and heat generation .

• High-Pressure Capability: Delivers 350 bar nominal and 400 bar peak pressure, meeting the most demanding mobile and industrial application requirements .

• Through-Drive Capability: 100% through drive suitable for adding additional pumps for multi-circuit systems, enabling flexible system configurations .

• Durability: Robust bearing system and high-quality materials ensure long service life in demanding continuous operation, with MTBF exceeding 10,000 hours .

• Excellent Suction Characteristics: Superior self-priming performance ensures reliable operation even in demanding conditions and at higher speeds .

Main Applications (Suitable Equipment):
The B1-300 Five-Star pump is widely recognized as a high-flow power unit for heavy machinery requiring substantial hydraulic power. It is extensively used in:

1. Large Excavators (30-50 ton class):

• Main hydraulic pump for digging, lifting, and swing functions

• Provides high flow for rapid cycle times and powerful digging forces

2. Rotary Drilling Rigs:

• Main pump for rotary drives and crowd systems

• Powers the rotation and down-force mechanisms for deep foundation drilling

3. Concrete Pump Trucks:

• Main hydraulic pump for large concrete pumping operations

• Delivers high flow for continuous concrete placement

4. Mining Machinery:

• Main pump for underground mining equipment

• Powers continuous miners, roof bolters, and haulage systems

5. Heavy Industrial Machinery:

• Hydraulic power units for steel mills and metallurgical equipment

• Large presses and forming machinery

• Hydraulic systems for heavy material handling

6. Marine & Offshore:

• Deck machinery and crane systems

• Winch drives and mooring systems

• Offshore drilling equipment

7. Specialty Applications:

• Tunnel boring machines (TBM) - main hydraulic power

• Large mobile cranes - hydraulic systems

• Hydraulic fracturing equipment in oil & gas industry