Parameter Description of Casappa Gear Pumps KP35.100 & KP35.63

General Overview

1. Model KP35.100

1.1 Model Interpretation

1.2 Core Technical Parameters

1.3 Performance Characteristics

• High Flow Output: With a theoretical displacement of 100 cm³/rev, the pump delivers large flow rates, making it ideal for high-flow, medium-pressure hydraulic systems that require consistent fluid supply.
• Extreme Pressure Resistance: The reinforced cast iron pump body and precision-machined gears enable stable operation at a maximum peak pressure of 320 bar, suitable for heavy-duty industrial and construction applications.
• Superior Efficiency: Boasting a volumetric efficiency of ≥ 95% and an overall efficiency of ≥ 90%, the pump minimizes energy loss, reducing operational costs and improving system performance.
• Low Noise & Pulsation: The optimized gear tooth profile and internal flow path design effectively reduce flow pulsation and noise emission, ensuring quiet operation even in noise-sensitive environments.
• Robust Durability: High-strength alloy gears and precision bearings enhance wear resistance, ensuring a long service life even under continuous high-load operating conditions.
• Modular Flexibility: A wide range of optional shafts, flanges, and port positions allows for easy integration into diverse hydraulic systems, meeting customized application requirements.

2. Model KP35.63

2.1 Model Interpretation

2.2 Core Technical Parameters

2.3 Performance Characteristics

• Balanced Flow & Compactness: With a displacement of 63.88 cm³/rev, the pump balances flow output and compactness, utilizing the same Group 35 frame as the KP35.100 to enable space-saving installation in medium-flow hydraulic systems.
• High Reliability: The three-piece cast iron construction and precision manufacturing process ensure stable performance in harsh operating environments, including dust, vibration, and temperature fluctuations.
• Energy Efficiency: Low internal leakage and optimized hydraulic design reduce power consumption, making the pump suitable for continuous-duty industrial applications where energy saving is a priority.
• Easy Maintenance: The modular design allows for quick disassembly and replacement of wear parts, minimizing equipment downtime and reducing maintenance costs.
• Versatile Compatibility: Interchangeable mounting dimensions with the KP35.100 simplify system upgrades and component replacement, enhancing flexibility in hydraulic system design.

3. Common Operating Requirements (Applicable to Both Models)

3.1 Hydraulic Fluid

• Recommended hydraulic oil: R&O type anti-wear hydraulic oil with ISO VG 32–68, and a viscosity index of ≥ 90.
• Operating kinematic viscosity: 20–150 mm²/s; preheat the pump at low pressure if the startup oil temperature is below 10°C to avoid component damage.
• Contamination control: The hydraulic fluid contamination level should be maintained at NAS 8 or lower; avoid water contamination and solid particles to ensure long-term pump reliability.

3.2 Temperature Limits

• Ambient temperature range: 0–60°C (32–140°F).
• Hydraulic oil temperature range: -20–80°C (-4–176°F); avoid cold starts below -20°C without preheating to prevent damage to seals and gears.

3.3 Suction Conditions

• Suction pressure: 0.02–0.3 MPa (2.9–44 psi).
• Suction line flow velocity: ≤ 1.83 m/s (6 ft/s) to prevent cavitation and ensure stable suction performance.
• Filter requirements: Install a 100 μm (150 mesh) suction strainer and a 25 μm return line filter to protect pump components from contamination.

3.4 Installation Notes

• Mount the pump with the shaft horizontally; avoid applying radial or axial loads to the shaft end (do not use belt or gear direct drive).
• Bleed air from the pump and hydraulic pipelines through inching operation (start-stop) during startup to ensure smooth operation.
• During trial operation, check for abnormal noise, vibration, or fluid leakage; stop operation immediately if any abnormalities are found to avoid further damage.

4. Application Scope

5. Key Optional Features

• Built-in valves: Anti-shock valves, anti-cavitation valves, pressure relief valves, and load-sensing (LS) priority valves.
• Shaft configurations: Splined or keyed shafts conforming to SAE standards.
• Port positions: Side or top port options for flexible pipeline layout in limited installation spaces.
• Multiple pump units: Tandem or multi-stage pump assemblies for complex hydraulic systems requiring different flow rates.