________ mounted cylinders are easily attached to flat surfaces, common with machine tools.

• A. Foot-mounted
• B. Flange
• C. Clevis
• D. Sub-plate

Answer: (A)

Mounting style dictates how a cylinder is secured to the machine frame and how its load is transferred. A foot-mounted cylinder has a flat mounting foot at the base that can be bolted directly to a flat surface. This makes attachment quick, simple, and very stable on machine-tool beds where surface flatness and rigidity are readily available. The foot provides a solid, unobstructed base for fastening, keeps the cylinder axis aligned with the load path, and minimizes mounting complexity.

Other options involve additional components or allowances for movement: flange mounting relies on a front flange with a bolt circle, which is more involved to fit to a flat surface; clevis mounting uses a yoke and pin to permit angular movement, not ideal for rigid flat-surface attachment; sub-plate mounting adds a separate plate for alignment or multiple cylinders, increasing setup steps. For straightforward, rigid attachment to flat surfaces common with machine tools, the foot-mounted design is the simplest and most practical.