KFP5190-KP1013CRG KYB Gear Pump 90cc 22.3MPa 2500rpm

Product Overview

The KFP5190-KP1013CRG is a cast iron external gear pump from the Japanese KYB (Kayaba) KFP51 series, featuring a displacement of 90 cm³/rev. This model is specifically engineered for the hydraulic systems of TCM wheel loaders and other heavy-duty construction equipment.

The KFP51 series represents KYB’s high-performance gear pump line, featuring a high-strength cast iron housing that delivers high performance, lightweight and compact design, and exceptional durability. The KFP51 series covers displacements from 63 to 125 cm³/rev, with maximum operating pressures of 20.6 – 23.0 MPa and speeds up to 2,500 rpm.

Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine KYB KFP5190-KP1013CRG pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing to validate pressure-flow-efficiency performance curves.

Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with KYB original equipment. All KYB brand names and model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer and is not an original KYB product.

Technical Specifications 

• Model Code: KFP5190-KP1013CRG

• Brand Series: KYB KFP51 Series Cast Iron Gear Pump

• Product Type: Fixed Displacement External Gear Pump

• Displacement: 90 cm³/rev

• Maximum Operating Pressure: 22.3 MPa (approx. 223 bar) 

• Maximum Speed: 2,500 rpm

• Minimum Speed: 600 rpm

• Housing Material: High-strength cast iron

• Mounting: Flange mounting

• Port Configuration: Multi-port design

• Hydraulic Fluid: Mineral oil

• Operating Temperature Range: -20°C to +120°C

• Maximum Pressure (Base Model) : 200 bar

• Efficiency (Base Model) : 85%

• Weight (KFP5190) : 22.3 kg

• Compatible Equipment: TCM wheel loaders

• Safety Certifications: ISO / OSHA

Key Technical Advantages

1. High-Strength Cast Iron Construction – Extreme Durability

The high-strength cast iron housing delivers superior structural rigidity and service life compared to aluminum alternatives under the high-pressure shocks, vibration, high temperatures, and high-contamination conditions typical of wheel loader operations. Operating temperature range spans -20°C to +120°C.

2. High-Pressure Rating – Built for Heavy-Duty Demands

Maximum operating pressure of 22.3 MPa (223 bar)  with a base model maximum of 200 bar. Meets the pressure requirements of TCM wheel loader hydraulic systems under heavy-load operating conditions.

3. Broad Speed Range

Supports a wide speed range of 600 to 2,500 rpm. Maintains stable flow characteristics from low-speed precision control to high-speed continuous duty—adapting to diverse loader operating conditions.

4. Compact & Lightweight Design – High Power Density

The KFP51 series is renowned for its lightweight and compact design. The KFP5190 delivers 90 cc displacement at just 22.3 kg, achieving an excellent power-to-weight ratio while maintaining high pressure and flow output.

5. Flange Mounting & Multi-Port Design – Installation Flexibility

Features a flange mounting system with multi-port configuration for seamless integration into hydraulic systems. Compatible with TCM wheel loader and other construction equipment mounting interface requirements.

6. 100% Simulated Duty-Cycle Testing

Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at rated pressure and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• TCM Wheel Loaders: Hydraulic implement systems

• Construction Equipment: Loaders, excavators hydraulic systems

• Material Handling Equipment: Forklifts, stacker hydraulic systems

• Agricultural Machinery: Tractors, combine harvesters

• Industrial Machinery: Presses, conveyor equipment

Expert Maintenance Tips

1. Fluid Cleanliness Control

Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. While cast iron gear pumps offer superior contamination resistance compared to aluminum alternatives, install a 10–25 μm absolute filtration filter upstream of the inlet port to prevent particle contamination from damaging precision gear pairs.

2. Inlet Line Requirements

Keep suction lines short and straight with adequate diameter—not less than the port size. Recommended suction line flow velocity: ≤1.5 m/s to prevent cavitation from excessive inlet resistance. Inlet pressure must be maintained between 0.8–2.0 bar (absolute) .

3. Coupling Alignment Precision

Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5° during installation. Flexible couplings are strongly recommended. For PTO-driven applications, ensure driveline alignment meets specifications.

4. First-Start Priming Procedure

Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.

5. Temperature & Viscosity Monitoring

Operating temperature range: -20°C to +120°C. Recommended operating viscosity: 12–100 cSt. During cold starts when temperature is low or viscosity is high, ensure adequate suction conditions or preheat the fluid.

Model: Features: Compatible with various scenarios