• Torque: 85 000 Nm max at 250 bar.
• Angle of rotation: 90, 180°, 270° or 360° (others on request).
• Optimized end cushioning (option).
• Through precise combined helical gears and low friction seals, is the SM4 already from 20 bar economically applicable.
• Maximum operating pressure: 250 bar

Low hydraulic axial load on drive shaft through small differential

• Less load on the ball bearing, freeing it for more important task.
• Extending the service life of the rotary actuator.

Adjustable drive shaft datum

• If you manufacture the hub, it is not necessary to regards the exact position of the keyways.
• The total angle can be re-adjusted at any time.

Four-point bearing

• Perfectly suited to withstand even extreme radial and axial loads, meeting the toughest requirements.

Highly perfected end cushioning for absorption of kinetic energy

• Negating the needs for expansive proportional or servo controls with virtually identical characteristics.

Large-area press-fit joint

• Assuring positive power/torque transmission even at peak load conditions.

Through shaft

• The axial force required for mounting the shaft on the hub can be exerted at the end of the shaft, preventing destruction of the ball bearing.

Externally adjustable end stop (standard)

• The end angle can be re-adjusted at any time by +/- 5°.
• In conjunction with the adjustable drive shaft datum, it is therefore possible to adjust the initial and final position of the total angle required.

Wear-resistant moving parts

• Long service life of the rotary actuator through extende-period nitriding.Excellent sliding characteristics of the gears.

Modern sealing technology

• Extended service life of seals.
• Increased safety, also with regards to the environment.
• Suitable for most fluids.
• All installation places have the smallest possible tolerances, in case of that, do we avoid a gap extrusion of the seals.
• No internal leakages through solid seals enabling the load to be held in any intermediate position.