NACHI General Industrial Hydraulic System NSP Series Compact Variable Pump
1. Product Overview
The NSP Series Compact Variable Displacement Pump is a high-performance hydraulic power unit developed by NACHI for general industrial applications. It integrates a variable vane pump with a motor, featuring a compact and lightweight design, excellent energy-saving performance, and high reliability. This series is specifically engineered to serve as a power source for machine tools and various industrial equipment, providing stable and efficient hydraulic power while minimizing energy consumption and installation space requirements.
2. Core Features
2.1 Superior Energy Efficiency
Equipped with IE3 premium efficiency motors, the NSP Series achieves approximately 46% energy savings compared to standard NACHI hydraulic units during pressure holding (full cutoff) conditions (in-house test data). This significant energy reduction not only lowers operational costs but also contributes to environmental sustainability.
2.2 Space-Saving Compact Design
The integrated design of the variable vane pump and motor, combined with an optimized layout, minimizes installation space. For models with pump capacities of 8.0 and 16.0 cm³/rev, the installation dimension is only 300 × 400 mm (11.81 × 15.75 inches), making it ideal for applications with limited space[1superscript:1superscript:2]..
2.3 Easy Operation and Maintenance
Featuring a simple and robust structure, the NSP Series ensures excellent reliability and ease of handling. Routine maintenance tasks are streamlined, reducing downtime and operational costs. Optional accessories such as oil level gauges with thermometers further facilitate maintenance monitoring.
2.4 High Efficiency with Low Heat Generation
The pump-motor assembly operates with high efficiency, particularly during pressure holding, resulting in minimal heat generation. This low heat output helps maintain the precision of the host machine and extends the service life of hydraulic oil and seals.
2.5 Resource Conservation
The NSP Series requires only a small volume of hydraulic oil in the tank (10L, 20L as standard, 30L/40L optional), reducing resource consumption and environmental impact.
2.6 Compliance with International Standards
Models with design number 14U are equipped with UL-certified motors and comply with the U.S. Energy Independence and Security Act (EISA), meeting global market requirements.
3. Technical Specifications
3.1 Basic Specifications
| Model Series | Pump Capacity (cm³/rev) | Maximum Pressure (MPa/psi) | Motor Output (kW) | Tank Capacity (L) | Installation Space (mm) | Approximate Weight (kg) |
|---|---|---|---|---|---|---|
| NSP-V0A | 8.0 | 8.0 / 1158 | 0.75, 1.5 | 10, 20 | 300 × 400 | 39 (10L, 1.5kW, without options) |
| NSP-V1A | 16.0 | 8.0 / 1158 | 1.5, 2.2 | 10, 20 | 300 × 400 | 39 (10L, 1.5kW, without options) |
| NSP-V2A | 26.0 | 7.0 / 1015 (Peak: 13.0 / 1885) | 2.2, 3.7 | 30, 40 | 340 × 450 | 81 (30L, 2.2kW, without options) |
3.2 Pressure & Flow Adjustment Ranges
Pressure Adjustment Range (Fixed Delivery Type A):
- A2: 1.5 – 4.0 MPa (217 – 580 psi), Factory Full Cutoff Setting: 3.5 MPa (507 psi)
- A3: 3.5 – 6.0 MPa (507 – 870 psi), Factory Full Cutoff Setting: 5.0 MPa (724 psi)
- A4: 5.5 – 8.0 MPa (796 – 1160 psi), Factory Full Cutoff Setting: 7.0 MPa (1014 psi)
Flow Rate Control Range (Maximum Capacity):
- 0: 8 cm³/rev (Factory default maximum setting)
- 1: 16 cm³/rev (Factory default maximum setting)
- 2: 26 cm³/rev (Factory default maximum setting)
4. Applications
The NSP Series is widely used as a hydraulic power source in various industrial applications, including but not limited to:
- CNC lathes (chuck opening/closing, tool rest rotation)
- Machining centers (spindle lifting/lowering operations)
- Hydraulic presses
- Mills and grinders
- Injection molding machines
5. Model Nomenclature
Example: NSP-10-07V0A2-F2T-14(U)
| Symbol | Description |
|---|---|
| NSP | Series Name: Compact Variable Displacement Pump Unit |
| 10/20/30/40 | Tank Capacity (L) |
| 07/15/22/37 | Motor Capacity (07: 0.75kW, 15: 1.5kW, 22: 2.2kW, 37: 3.7kW) |
| V0/V1/V2 | Pump Capacity (V0: 8cm³/rev, V1: 16cm³/rev, V2: 26cm³/rev) |
| A2/A3/A4 | Pressure Adjustment Range |
| F*R* | Option: Block Mounted |
| T | Option: Oil Level Gauge with Thermometer |
| 14/14U | Design Number (14: Standard, 14U: UL & EISA Compliant for US) |
6. Notes
- There are restrictions on the combination of pump capacity and motor capacity. Refer to the selection guidelines before choosing a model.
- Design numbers are subject to change without prior notice. Please confirm with NACHI sales representatives for the latest information.
- Use mineral-based hydraulic oil (equivalent to ISO VG32) and ensure the oil temperature does not exceed 60℃ during operation.
- The maximum peak pressure (set pressure + shock pressure) must not exceed 14MPa. If it exceeds 15MPa, an additional relief valve for shock pressure cutoff is required in the circuit.
7. Related Products
NSPi Series: Inverter-Driven Compact Variable Displacement Pump Unit, achieving up to 69% energy savings compared to standard units, with ultra-low noise (53dB(A)) and minimal oil temperature rise (1.5℃ above room temperature).
