Which term describes a cylinder without an external rod extending from its body?

Which term describes a cylinder without an external rod extending from its body?

• A. Piston cylinder
• B. Single-acting cylinder
• C. Double-acting cylinder
• D. Rodless cylinder

Answer: (D)

Think of a cylinder that turns fluid power into linear motion. In most designs, the piston is connected to a rod that sticks out of the housing to drive the load. A rodless cylinder, on the other hand, has no rod protruding from the body. The load is attached to a carriage or coupled magnetically so the piston inside moves the load without any external rod sticking out. This makes the assembly more compact in the direction of travel and avoids interference where a rod would be a problem. The other terms describe cylinders with an external rod, either for a single direction actuation or for both directions, so they still feature a protruding rod. Therefore, the term for a cylinder without an external rod is rodless cylinder.

Think of a cylinder that turns fluid power into linear motion. In most designs, the piston is connected to a rod that sticks out of the housing to drive the load. A rodless cylinder, on the other hand, has no rod protruding from the body. The load is attached to a carriage or coupled magnetically so the piston inside moves the load without any external rod sticking out. This makes the assembly more compact in the direction of travel and avoids interference where a rod would be a problem. The other terms describe cylinders with an external rod, either for a single direction actuation or for both directions, so they still feature a protruding rod. Therefore, the term for a cylinder without an external rod is rodless cylinder.