ROTAMAAC products cover a wide range of hydraulic rotary actuators capable of delivering high torques.
They are widely used in the industrial sector, particularly in steelworks, materials handling, ports, ships, etc.
Technical details:
The rack-and-pinion design is used in single-acting or double-acting versions, depending on the torque range required. The standard single cylinder can be doubled to a twin configuration, operating in opposition, thus doubling torque. Standard rotation angles are usually 180ยฐ or 280ยฐ, but other angles are available on request.
Here is an example of the characteristics of this type of cylinder:
| Operating pressure [bar] | Test pressure [bar] | Maximum operating pressure [bar] | Movements/h | Maximum rotation speed [/sec] | Operating temperature |
|---|---|---|---|---|---|
| 210 | 300 | 270 | 1500/h | 1 | -10ยฐ / +90ยฐC |
Torque range description:
Based on our technical experience, we have drawn up a table to help our customers select the size of cylinders they need. This table shows the approximate sizes of rotary cylinders, with torque ratings up to 37,000 daN bar.
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Please note that this information is intended as a guide only. The precise calculation of the dimensions and forces applied to the hydraulic cylinders must be carried out according to your application.
Several characteristics can be defined and adapted to the final context, including :
The integration of end-of-stroke cushioning systems, with adjustment options
Desired angle of rotation
Shaft sealing type (lip seal (N) or bushings (H))
Hydraulic ports (SAE, BSPP, etc.)
The type of shaft coupling, whether splined or keyed
The type of oil used, which has an impact on seal technologies
Possible integration of a rotary encoder for shaft positioning
Other elements to be defined together…
Overall dimensions :
