YZA15-8 Series Hydraulic Power Unit

The YZA15-8 is a compact, integrated hydraulic power unit (HPU) mainly for SB/SBD series safety brakes and single-acting cylinders, delivering stable pressure and flow for industrial braking and actuation.

---

Core Parameters (Typical Specifications)

Parameter	Value
Rated pressure	15 MPa (150 bar)
Rated flow	8 L/min
Motor power	1.5 kW (380 V, 50 Hz, customizable)
Tank capacity	~25–40 L (varies by configuration)
Main pump type	Gear pump (reliable, low noise)
Relief valve setting	16–18 MPa (overpressure protection)
Protection rating	IP54 (motor/shell)
Operating temp	-20 °C to 45 °C
Weight	~65–80 kg

---

Key Components

Power module: Electric motor + gear pump (converts electrical to hydraulic energy).

Control valve block: Integrated pressure relief, check, and directional valves for pressure/flow/direction control.

Tank assembly: Stores oil, with suction/return filters, air breather, and level gauge.

Auxiliaries: Pressure gauge, thermometers, and optional cooler for monitoring and stability.

---

Working Principle

Start-up: Motor drives the gear pump to draw oil from the tank through the suction filter.

Pressurization: The pump delivers pressure oil to the valve block; the relief valve limits system pressure to the set value.

Actuation: Directional valves route oil to the brake cylinder or actuator to release the brake; check valve maintains pressure for holding.

Reset: Valves shift to return oil to the tank; the brake's spring force clamps, and the system depressurizes.

Emergency: Manual pump (optional) enables pressure build-up during power failure for safe release/reset.

---

Performance Advantages

Stable pressure holding: Sitting valves minimize leakage for consistent braking force.

Overload protection: Relief valve prevents overpressure and motor burnout.

Compact integration: Saves space and simplifies installation with fewer external pipes.

Dual control modes: Electric for normal use; manual for maintenance/power outage scenarios.

Durable construction: Corrosion-resistant materials and IP54 protection for harsh industrial environments.

---

Application Scope

Primary: SB/SBD series safety brakes for cranes, hoists, and conveyors.

Secondary: Hydraulic rail clamps, single-acting cylinders, and simple linear actuators in metallurgy, mining, and ports.

Suitable for: Indoor fixed equipment; avoid flammable, explosive, or highly corrosive environments (use anti-corrosion variant outdoors).

---

Installation & Maintenance Tips

Mounting: Secure horizontally on a level surface; ensure proper ventilation and accessibility for service.

Oil selection: Use ISO VG 32/46 hydraulic oil; keep cleanliness NAS 7–8 and check/change oil per schedule.

Pre-operation: Fill oil to the correct level, bleed air from the pump and lines, and verify pressure settings.

Routine checks: Inspect for leaks, monitor oil temperature (≤60 °C), and clean filters regularly.

Hot Tags: yza15-8 series hydraulic power unit, China, manufacturers, supplier, factory, customized