Patent ID: 6098517
Filing Date: 2000-08-08
Classification: B25J,F15B

Abstract:
A rotary linear unit comprising a fluid operated rotary drive, which possesses a drive shaft adapted to be driven to perform a rotary movement and which is arranged on the rear side of a fluid operated linear drive, which latter possesses an output drive unit able to move axially and which simultaneously is coupled in a manner preventing relative rotation with the drive shaft of the drive unit, such output drive unit having a piston and an output drive rod, fixedly connected with said piston, projecting from the front side of the linear drive, wherein a bearing rod fixedly connected with the drive shaft is provided, which in the interior of the linear drive coaxially extends into the output drive unit, on the bearing rod a bearing sleeve, which is fixedly connected with the piston of the linear drive, is mounted in such a manner as to prevent relative rotary motion while permitting at the same time axial movement and the piston is divided into two axially sequential piston parts which at mutually facing axial sides each possess a receiving recess, the bearing sleeve being arranged between the two piston parts and having respective portions of its length inserted into the receiving recesses.