YT1-180Z/8 Series Electro Hydraulic Thrusters

The YT1-180Z/8 Series​ is a robust, heavy-duty electro-hydraulic thruster designed as a linear actuator primarily for industrial braking systems. It is a classic and widely used design, particularly in demanding material handling and heavy machinery applications.

Core Operating Principle

It operates on a self-contained electro-hydraulic system. An integrated electric motor drives a centrifugal pump, which pressurizes hydraulic oil within the unit's sealed body. This pressure forces a piston to extend linearly, generating a powerful push (thrust). When power is cut, the piston is returned by an internal spring or the force of the connected brake spring, ensuring a fail-safe, spring-applied​ braking action.

Key Features & Design Characteristics

High Torque & Thrust Output:​ The "180" in the designation typically refers to the nominal thrust in kilogram-force (kgf) or a model size indicating high force, suitable for large disc or shoe brakes.

Long Stroke:​ The /8denotes a standard piston stroke of 80mm, allowing it to operate brakes requiring significant movement for release.

Oil-immersed Construction:​ All running parts (motor, pump) operate in a bath of hydraulic oil. This provides:

Excellent lubrication and cooling.

Reduced wear and maintenance.

Effective noise damping​ for quieter operation.

Rugged and Sealed Housing:​ The cast housing protects internal components from dust, moisture, and harsh industrial environments.

Smooth Actuation:​ Hydraulic action ensures cushioned, jerk-free movement, reducing mechanical shock on the brake linkage.

Typical Technical Data

Thrust Force:​ Approximately 1800 N (or ~180 kgf) at the rated pressure.

Stroke:​ 80 mm (standard).

Power Supply:​ Common models are for 3-phase AC supply (e.g., 380V, 415V, 50/60Hz).

Motor Power:​ Typically in the range of 0.75 kW to 1.1 kW, depending on the specific variant.

Duty Cycle:​ Designed for high duty cycles (e.g., 60% or more), suitable for frequent start-stop cycles.

Operating Temperature Range:​ Designed for standard industrial ambient temperatures; the oil bath helps with heat dissipation.

Primary Application

Its main and essential function is to serve as the actuator for fail-safe brakes:

Overhead Travel Cranes and Gantry Cranes:​ For bridge and trolley motion braking.

Hoists and Winches:​ As a holding or service brake.

Mine Elevators (Winders) and Incline Haulages.

Conveyor Systems.

Test Rigs and Heavy Machinery.

Advantages

High Reliability & Long Service Life:​ Simple, proven design with minimal wearing parts.

Inherent Safety:​ Fail-safe operation; brake engages automatically on power loss or shutdown.

Low Maintenance:​ Only requires periodic oil checks/ changes under normal conditions.

Self-Contained:​ No complex external hydraulic power unit needed.

Summary

The YT1-180Z/8 Series Electro-hydraulic Thruster​ is a workhorse actuator for industrial safety braking. It is valued for its powerful 80mm stroke, robust oil-immersed construction, and dependable fail-safe operation in crane, mining, and material handling equipment worldwide. Its performance is characterized by smooth, strong, and reliable linear motion.

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