VARIABLE VANE PUMP VP-SF-20-D

VARIABLE VANE PUMP VP-SF-20-D

5 day ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 3 year year

Product details

I. Product Overview

Featuring a vane-type design, this pump offers adjustable displacement, stable pressure, and low noise, making it suitable for applications in CNC machines, hydraulic systems, and industrial machinery.

II. Key Specifications

1. Displacement & Flow Rate

• Displacement: 11.1 cc/rev (displacement per revolution).

• Flow Rate: Approximately 20 L/min at 1800 rpm (under no-load conditions).

• Flow Adjustment Range: Depending on the model suffix (e.g., A1, A2, A3), the adjustment range may vary, such as 15-35 L/min or 30-55 L/min.

2. Pressure Performance

• Maximum Operating Pressure: 70 kgf/cm² (approximately 980 psi).

• Pressure Adjustment Range: Output pressure can be regulated via an internal pressure regulator (turn right to decrease pressure, left to increase).

• Maximum Peak Pressure: Must not exceed 140 bar (approximately 2030 psi).

3. Speed Range

• Recommended Speed: 800-1800 rpm.

• Maximum Speed: 1800 rpm (some models may support higher speeds).

4. Port Sizes

• Inlet: 3/4 inch (SAE standard).

• Outlet: 1/2 inch (SAE standard).

• Drain Port: 1/4 inch (SAE standard).

5. Weight & Dimensions

• Weight: Approximately 5.0 kg (varies by model).

• Mounting: SAE 2-bolt flange installation.

III. Product Features

1. Automatic Displacement Adjustment

• Utilizes "shaft clearance compensation" technology to automatically adjust displacement based on system pressure, optimizing energy efficiency.

2. Built-In Pressure Regulator

• Eliminates the need for external pressure regulators, simplifying hydraulic circuit design.

3. Low-Noise Operation

• Optimized vane-to-stator clearance reduces operational noise, making it ideal for noise-sensitive environments.

4. Wear-Resistant & Durable

• Key components are made from high-strength materials to extend service life.

5. Easy Assembly

• Directly compatible with motors, reducing installation space and time.

IV. Applications

1. CNC Machines: Provides stable pressure and flow for spindle lubrication, fixture actuation, etc.

2. Industrial Machinery: Suitable for hydraulic systems in injection molding machines, die-casting machines, and presses.

3. Specialized Machinery: Used in grinders, automatic lathes, and shoe-making machines requiring precise pressure and flow control.

4. Hydraulic System Upgrades: Replaces outdated pumps to enhance system efficiency and stability.

V. Operation & Maintenance

1. Initial Startup

• Prime the pump and suction line by repeatedly starting the motor under no-load conditions to eliminate air.

• Run continuously for 10 minutes under no-load to ensure system stability.

2. Displacement Adjustment

• Loosen the adjustment nut and rotate the adjustment screw (right to decrease flow, left to increase). Tighten the screw after adjustment.

3. Pressure Adjustment

• Turn the pressure adjustment screw right to lower output pressure or left to increase it.

4. Hydraulic Oil Requirements

• Use hydraulic oil with a viscosity of 30-50 cSt at 40°C (ISO VG32) for pressures below 70 bar.

5. Drain Line Pressure

• Connect the drain line directly into the tank below the oil surface, maintaining backpressure below 0.3 bar.

6. Operating Oil Temperature

• Recommended continuous operating temperature: 15-60°C.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

3 year

Address: Ningbo, China

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch , hydraulic system

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