General Overview
The document outlines the technical specifications and operational guidelines for the HY-3 SM rotary actuators by Hydropa GmbH & Cie. KG, suitable for industrial applications such as construction machinery, machine tools, and shipbuilding.

Specifications
- Operates at pressures up to 210 bar with torques up to 250,000 Nm.
- Available in 15 sizes with piston diameters from 40 to 450 mm.
- Offers four rotary angle options per size: 90°, 180°, 270°, and 360°.
- Features include double sealing on the drive shaft, cushioning at both ends, and rotary angle adjustment up to ±4°.

Auxiliary Equipment
- Options for various drive shaft profiles and additional drive cogs.
- Customizable drive shaft and mounting flange.
- Additional features include limit switch installation, direct valve connection, and sea-water resistance.

Special Versions
- Custom configurations for specific needs, including higher working pressures and additional bearings for increased radial forces.

Application Planning
- Highlights the importance of correct sizing based on torque and operational conditions.
- Provides guidance on calculating total, loading, and accelerating moments.
- Recommends consulting Hydropa specialists for tailored advice.

Operating Instructions
- Proper alignment of the drive shaft is crucial to avoid excessive axial and radial forces.
- Hydraulic systems must be cleaned and vented before use.
- Recommends using mineral oils and provides guidelines for filtration and oil change intervals.
- Specifies a temperature range of -10°C to +75°C, with adjustments available for other conditions.

Functional Description
- Explains the conversion of linear piston movement into rotary motion via helical gears.
- Details standard and adjustable rotation angles, with options for changing the rotating direction.

Technical Data
- Includes detailed tables of torque, pressure, and load capacities for various actuator sizes.
- Provides information on maximum axial and radial loads, as well as weight and capacity at different angles.