Kawasaki K5V212 Excavator Hydraulic Piston Main Pump for SY285 SY245 SY305 SY335 SY365 SY485

Product Overview:
The K5V212 is a high-performance swashplate design axial piston pump from the renowned Kawasaki K5V series. Specifically engineered for open circuit hydraulic systems, this variable pump delivers exceptional power density, reliable operation, and precise control under extreme loads . With a displacement of 214 cm³/rev and robust construction, it provides stepless flow adjustment for large-scale mobile applications. With over 25 years of proven field experience, the K3V/K5V series is recognized for its high reliability in the global construction machinery market . This unit is a direct, high-quality replacement solution for original Kawasaki equipment, widely used in 30-50 ton class excavators and heavy machinery.

Technical Specifications:

• Model: K5V212 (Available as single pump, tandem DT type, or DTP with PTO)

• Type: Swashplate design, variable axial piston pump

• Displacement: 214 cm³/rev (approximately 212-214 cm³/rev depending on configuration) 

• Rated Pressure: 34.3 MPa (approximately 350 bar / 5,000 psi) 

• Maximum Pressure: 39.2 MPa (approximately 400 bar / 5,700 psi) 

• Maximum Self-Priming Speed: 2,000 rpm (with impeller/charge pump) 

• Maximum Speed: Up to 2,000-2,200 rpm depending on configuration

• Flow Rate: Up to 428 L/min (total for both pumps in tandem configuration at rated speed)

• Control Options: Negative flow control, load sensing, total horsepower control (TVC), electro-proportional control 

• Design: For open circuit hydraulic systems

• Structure Options: Single pump, tandem (DT), tandem with PTO (DTP), parallel type 

• Mounting Flange: SAE / ISO 3019-1 standard

• Port Connection: Side ported with SAE flange ports

• Weight: Approximately 150-180 kg (depending on configuration)

• Material: High-strength cast iron housing with hardened alloy steel internal components 

• Temperature Range: -20°C to +95°C

Model Code Breakdown:

Core Features:

• Robust Swashplate Design: The proven swashplate design with high-strength cast iron construction ensures reliable operation, excellent volumetric efficiency (up to 95%), and long service life in open circuit applications. Cast iron housing provides superior vibration damping and wear resistance .

• High-Pressure Capability: Delivers 34.3 MPa rated and 39.2 MPa peak pressure (approximately 350-400 bar), meeting the most demanding excavator and construction application requirements .

• High Power Density: Delivers exceptional power output within compact dimensions, providing excellent power-to-weight ratio for large machinery applications .

• High Suction Capability: Superior self-priming performance (with optional impeller/charge pump) ensures reliable operation even in demanding conditions and at higher speeds, minimizing cavitation risks .

• Multiple Structure Options: Available as single pump, tandem (DT), or tandem with PTO (DTP) to suit various application requirements. Tandem configuration provides independent hydraulic power for multiple machine functions from a single drive source .

• Multiple Control Options: Wide variety of controls available including negative flow control (standard for excavators), load sensing, total horsepower control (TVC), and electro-proportional control to suit specific application needs .

• PTO Capability: The through-shaft design (DTP models) allows for the connection of additional hydraulic components, such as pilot gear pumps, providing flexible system configuration options .

• High-Quality Internal Components: Pistons, cylinder blocks, and drive shafts are manufactured from high-strength alloy steels with specialized surface treatments (carburizing/nitro-carburizing) to increase surface hardness, reduce friction, and extend service life .

• Proven Reliability: With more than 25 years of experience in mobile applications, the K5V series offers field-proven performance and high reliability in demanding construction environments .

Main Applications (Suitable Equipment):
The K5V212 is widely recognized as the specialized power unit for large excavators and heavy machinery. It is extensively used in:

1. Large Excavators (30-50 Ton Class - Primary Application):

• SANY excavators: SY485, SY500, SY600R 

• Caterpillar excavators: 345D, 345D L, 349D, 349E 

• Kobelco excavators: SK350, SK380, SK400, SK480 series

• Hitachi excavators: ZX350, ZX470, ZX490, ZX500 series

• Komatsu excavators: PC300, PC360, PC400, PC450 series

• Volvo excavators: EC350, EC380, EC480, EC500 series

• Doosan excavators: DX300, DX340, DX380, DX420, DX480 series

• Hyundai excavators: R320, R350, R380, R450, R480 series

• Sumitomo excavators: SH350, SH380, SH460 series

2. Heavy Construction Machinery:

• Large crawler cranes (50-100 ton class)

• Wheel loaders (10-15 ton class)

• Motor graders and road construction equipment

• Bulldozers and crawler dozers (large frame)

3. Mining Machinery:

• Mining shovels and excavators 

• Rock drilling rigs and blast hole drills

• Underground mining equipment

• Crushers and material processors

4. Drilling & Foundation Equipment:

• Large rotary drilling rigs

• Pile drivers and foundation machinery

• Tunnel boring machines (TBM) - main hydraulic power 

5. Industrial Applications:

• Heavy industrial hydraulic power units

• Large hydraulic presses and forming equipment

• Marine and offshore hydraulic systems

• Steel mill equipment and metallurgical machinery

6. Specialty Applications:

• Concrete pump trucks - large boom pumps

• Dump trucks and mining haulers

• Forestry equipment and harvesters