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Engineering Data
Application Data
Cutaway View
How to Order
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Rotating Actuators
The Rotating actuator is a new innovation of reciprocating torque actuators. Its interior design and construction are similar to standard lines of stationary actuators, but the Rotating actuator, unlike the stationary models, revolves in application. Also, its applications are entirely different.
It consists of an aluminum alloy body with a precision machined cylindrical chamber, a central splined-end shaft on which vanes are fixed, and barriers or shoes that provide positive internal stops for the vanes. The number of vanes and shoes within the unit limit the arc of vane travel and effect the torque output capacities.
Power is derived from either hydraulic or pneumatic pressure directed against the vanes which, in turn, rotate the splined shaft.
Although the shoes limit the movement of the vanes to a precise maximum degree, any required arc of movement can be controlled by valves and external positive stops. Infinitely variable, increasing and decreasing, and sudden loads can be applied.
Reciprocating torque actuators, like most power outputs, are usually mounted to a stationary base. But the Rotating actuator revolves in application as an integral part of a functioning device: the body, vanes, and shaft rotate in unison, maintaining their relationship until fluid pressure changes the position of the vanes.
It Works Like This:
In applications such as machining, the Rotating actuator is mounted to the spindle and rotates at the same speed. When fluid pressure is applied, it either advances or reverses the relative position of the vanes - therefore the shaft - to supply the necessary movement, or torque, as the job requires. In test and fatigue applications, the Rotating actuator is mounted remote of the power source but as an integral unit of entire driving assembly. Its function is to impose torque circulating within the driven assembly but independent of the rotating power source.
Controlled fluid pressure on the vanes within the actuator apply load, or shock as the test may require, on the driven specimens.
In applications and illustrations shown in this brochure, the Rotating actuator is equipped with a hydraulic union for pressure input. Similar devices can be used to accommodate pneumatic pressure.
Rotating actuators are designed in "small" and "medium" models with two and three vanes to provide torque outputs for many applications. The following drawings, specifications lists, and charts will help to pinpoint the exact model to suit a given purpose. In addition to this information engineering service is available through your field representative, or through the factory for application assistance and special designs.
Engineering Data
Standard rotating actuators use Deublin Rotating Hyd. Deu-Plex unions with special features
Max. R.P.M. - 5,000 @ 750 PSI Max.
Max. Air Pressure 150 PSI
Note: Lubricated air is required for pneumatic operation.
Note: Splined couplings are available.
Note: Unless otherwise specified, units are dynamically balanced per ISO 1940 G 2.5 from diameters indicated with 
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Torque ratings in inch-pounds p.s.i. |
Model |
100 |
200 |
400 |
500 |
600 |
750 |
| SS-2V |
400 |
850 |
1,700 |
2,100 |
2,550 |
3,100 |
| SS-3V |
600 |
1,350 |
2,650 |
3,300 |
3,950 |
4,900 |
| SL-2V |
850 |
1,700 |
3,400 |
4,200 |
5,000 |
6,250 |
| SL-3V |
1,300 |
2,650 |
5,300 |
6,600 |
7,900 |
9,850 |
| MS-2V |
2,000 |
3,550 |
7,500 |
9,250 |
11,000 |
13,600 |
| MS-3V |
3,000 |
6,000 |
11,500 |
14,500 |
17,500 |
21,550 |
ML-2V |
3,750 |
7,500 |
15,000 |
18,500 |
22,000 |
27,650 |
ML-3V |
6,000 |
12,000 |
23,500 |
29,500 |
35,000 |
43,150 |
Applications
DRAWING A.
Centrifugal, bending, and torque testing of couplings, fatigue specimens, and universal joints is done in this typical arrangement. The Rotating Rotac actuator supplies the torque load, stress, or shock the items.
DRAWING B.
Two automotive differentials are tested in this arrangement. The Rotating Rotac actuator's reciprocal capabilities impose continuous forward, reverse and variable action plus shock loading on the specimens.
DRAWING C.
In chucking lathe applications, the Rotating Rotac actuator actuates the jaws of the chuck, and shifts the locations of the work for eccentric turning during the machining cycle.
DRAWING D.
In a gear testing arrangement, an electric motor drives the entire assembly, including the Rotating Rotac actuator. Hydraulic power input to the Rotac actuator imposes load or shock to the gear train.
NOTE: See cut away view on page R-4. |
