Fluid actuator arrangement

An elongated fluid actuator arrangement comprising:

• a cylinder body comprising a first and second end portion;
• a piston body comprising a piston force area forming portion and a sleeve portion, which extends through said first and second end portions and exposes first and second outer section outside the cylinder body;
• a piston rod extending coaxially through said sleeve portion;
• and
• the sleeve portion of the piston body comprises a piston rod engagement and disengagement means provided to be operated by a fluid supply device;
• wherein
• the arrangement comprises a first and second extendable and contractible cover member each joined to the cylinder body and to the respective sleeve portion outer section for providing a seal that prevents external leakage and at the same time permits lower friction in work when the sleeve portion of the piston body moves relative the cylinder body;
• and
• the extendable and contractible cover member comprises a hydraulic fluid drain means arranged for collecting overflow hydraulic fluid, the overflow hydraulic fluid overflowing into the extendable and contractible cover member from the cylinder body.