Durable K3V112 Kawasaki Main Hydraulic Pump for Crawler Excavator Repair Parts

Product Overview:
The K3V112 is a high-performance swashplate design axial piston pump from the renowned Kawasaki K3V 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 112 cm³/rev and robust construction, it provides stepless flow adjustment for demanding mobile applications. With over 25 years of proven field experience, the K3V 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 excavators from Hyundai, Doosan, Kobelco, and other major brands.

Technical Specifications:

• Model: K3V112 (Available as single pump, tandem DT type, or DTP with PTO)

• Type: Swashplate design, variable axial piston pump

• Displacement: 112 cm³/rev (117 cm³/rev depending on configuration)

• Rated Pressure: 34.3 MPa (approximately 350 bar / 5000 psi)

• Maximum Pressure: 39.2 MPa (approximately 400 bar / 5700 psi)

• Maximum Self-Priming Speed: 2,360 rpm

• Maximum Speed: Up to 2,700 rpm

• Flow Rate: 53.4 GPM at 1800 rpm (approximately 202 L/min)

• Control Options: Negative flow control, load sensing, pressure cutoff, torque limiting, electronic displacement control

• Design: For open circuit hydraulic systems

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

• Mounting Flange: SAE D 4-Bolt / ISO 3019-1 standard

• Port Connection: Side ported with SAE flange ports (2.5" Code 61 inlet, 1.25" Code 62 outlet)

• Shaft Type: Splined shaft or keyed shaft options available

• Weight: Approximately 65-70 kg (single pump) / 120-140 kg (tandem DT)

• Material: Robust cast iron construction with hardened steel components

• Temperature Range: -20°C to +95°C

Core Features:

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

• 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 .

• Excellent Suction Characteristics: Superior self-priming performance (up to 2,360 rpm) 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 Advanced Control Options: Wide variety of controls available including negative flow control (standard for excavators), load sensing, pressure cutoff, torque limiting, and electronic displacement control to suit specific application needs .

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

• Durability: High-quality materials and stringent quality control processes ensure long service life in demanding continuous operation. Advanced sealing technology prevents internal leakage and minimizes wear and tear .

• Proven Reliability: With more than 25 years of experience in mobile applications, the K3V series offers field-proven performance and high reliability in demanding construction environments .

• Low Noise Operation: Optimized design ensures low noise levels during operation, meeting stringent workplace noise regulations .

Main Applications (Suitable Equipment):
The K3V112 is widely recognized as the specialized power unit for heavy machinery requiring high-pressure, variable flow hydraulics. It is extensively used in:

1. Excavators (20-25 Ton Class - Primary Application):

• Hyundai excavators: R210, R210-7, R210LC-7, R215, R215-7, R220, R225

• Doosan / Daewoo excavators: DH215, DH220-5, DH220-7, DH225-7, DX225

• Kobelco excavators: SK200-6, SK200-8, SK210, SK210LC, SK220

• Volvo excavators: EC210B, EC240B

• Sumitomo excavators: SH210, SH200

• Sany excavators: SY215

• Hitachi excavators: EX200, ZX200, ZX210

• JCM excavators: JCM821, JCM921, JCM922

• Komatsu, Caterpillar, Kato, and other brands

2. Construction Machinery:

• Wheel loaders and backhoe loaders

• Bulldozers and crawler dozers

• Motor graders and road construction equipment

• Skid steer loaders and compact loaders

3. Drilling & Foundation Equipment:

• Rotary drilling rigs 

• Crawler drills and pile drivers

• Tunnel boring machines (TBM) and foundation equipment

4. Material Handling Equipment:

• Material handlers and cranes

• Telehandlers and rough-terrain forklifts

5. Specialty Applications:

• Dump trucks and tipper vehicles - hydraulic system power

• Asphalt pavers and road construction equipment

• Concrete pump trucks and mixing equipment

• Mining machinery and heavy industrial equipment

• Agricultural machinery and harvesters

• Marine and offshore hydraulic systems

• Industrial hydraulic power units