NACHI UVN-1A-0A2-0.7-4-11 Hydraulic Uni Motor Pump Power Unit 4P 0.75kW

Buy online your NACHI UVN-1A-0A2-0.7-4-11 Hydraulic Uni Motor Pump Power Unit 4P 0.75kW from UK e-store Cnc-shopping UK, specialist in CNC machine-tools spare parts.

The NACHI UVN-1A-0A2-0.7-4-11 is a compact hydraulic motor-pump power unit designed to supply hydraulic circuits on CNC machine tools. It is commonly used for chuck clamping, tool clamping, pallet locking, tailstocks, and auxiliary actuators. It is a practical replacement unit and industrial spare part for maintenance applications.

This hydraulic power unit integrates a pump and a 4-pole, 0.75 kW three-phase motor. It delivers a maximum flow rate of 14.5 L/min at 1,800 rpm and features an adjustable pressure range of 1.5 to 4.0 MPa. Its foot-mounted design facilitates installation on compatible equipment.

The specified electrical ratings are 360 V AC at 50 Hz, 3.9 A and 1,400 rpm, 360 V AC at 60 Hz, 3.6 A and 1,690 rpm, and 380 V AC at 60 Hz, 3.5 A and 1,710 rpm. The corresponding power factors are 75%, 75%, and 70%, respectively.

The three-phase motor wiring diagram illustrates two connection configurations: star (Y) for 380 V and delta (Δ) for 220 V, identifying the six motor terminals U1, V1, W1, U2, V2, and W2. Before making any electrical connections, always verify the motor nameplate, supply voltage, and compatibility of the wiring configuration with the actual unit supplied.

Manufactured in Japan, the UVN-1A-0A2-0.7-4-11 is suitable for CNC lathes, machining centers, grinding machines, automated fixtures, and hydraulic workholding systems. It is a practical CNC replacement component and emergency spare that helps minimize production downtime caused by pump wear, leakage, or insufficient hydraulic pressure. Before installation, verify the complete model reference, rotation direction, hydraulic connections, and electrical specifications.

Each unit supplied by Cnc-shopping can be inspected and tested on appropriate test benches to verify its hydraulic and electrical operation. Hydraulic ports are protected, and products are packed in protective packaging suitable for industrial shipping, with a commercial warranty under our standard terms.

Cnc-shopping offers the NACHI UVN-1A-0A2-0.7-4-11 with worldwide shipping and an estimated 3-day dispatch time, subject to availability. We also assist with sourcing obsolete parts and may offer repair, standard exchange, or refurbished-unit solutions when available.

Frequently asked questions about UVN-1A-0A2-0.7-4-11:

Is it a drop-in swap if my machine plate lists UVN-1A-0A2-0.7-4-11?
Yes, matching the complete code is the safest path to a direct replacement. Confirm rotation, port thread standard, mounting hole pattern and electrical nameplate values against your original unit before installation.

What do 4P and 0.75 kW indicate for selection?
4P identifies a four-pole motor class and 0.75 kW is the motor’s power rating. Keeping these values consistent helps preserve expected flow and pressure response in the machine’s hydraulic manifold.

Can this motor-pump operate on both 50 Hz and 60 Hz mains?
Many four-pole motor-pump assemblies are designed for common 50/60 Hz supplies, with speed and flow changing with frequency. Always verify the voltage and frequency marked on the unit’s nameplate to match your plant power.

When should I replace the hydraulic motor-pump unit?
Persistent cavitation noise, oil leaks, slow clamping, drifting pressure or rising oil temperature are typical signs. A like-for-like replacement with the same UVN code usually restores normal clamping performance quickly.