Applied Product Catalog 2016 2017 Page i35 Technical Reference

Cylinder Types All Things Industrial SM i35 Standard Double-Acting Power stroke is in both directions and is used in the majority of applications. Single-Acting When thrust is needed in only one direction, a single-acting cylinder may be used. The inactive end is vented into the Double Rod Used when equal displacement is needed on both sides of the piston, or when it is mechanically advantageous to couple a load to each end. The extra end can be used to mount cams for operating limit switches, etc. Spring Return, Single-Acting Usually limited to very small, short stroke cylinders used for holding and clamping. The length needed to contain the return spring makes them undesirable when a long stroke is needed. Ram Type, Single-Acting Containing only one fluid chamber;this type of cylinder is usually mounted vertically. The weight of the load retracts the cylinder. r They are sometimes known as "displacement cylinders", and are practical for long strokes. Telescoping Available with up to 4 or 5 sleeves; collapsed length is shorter than standard cylinders. Available either as single or double- acting, they are relatively expensive compared to standard cylinders. Tande T m Atandemcylinderismadeupoftwocylindersmountedinlinewith pistons connected by a common piston rod and rod seals installed between the cylinders to permit double acting operation of each. Tandem T cylinders allow increased output force when mounting width or height are restricted. Duplex A duplex cylinder is made up of two cylinders mounted in line with pistons not connected and with rod seals installed between the cylinders to permit double acting operation of each. Cylinders may be mounted with piston rod to piston (as shown) or back to back, and are generally used to provide three position operation. atmosphere through a breather filter for pneumatic applications, or vented to a resevoir below the oil level in hydraulic applications.

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