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Custom Assemblies Engineered Solutions





PC Series

Heavy Duty Pneumatic Cylinders

1½” – 14″ Bore

The materials used to manufacture RDC CONTROL cylinders are selected from the best quality available. Each manufactured component is made with the latest sophisticated precision equipment. Each cylinder is assembled and individually tested under strict quality conditions.

PC Series Brochure

Please note that our brochures are for reference only.

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Integrated Check Cushion Seal

The optional cushion seals provided with the PC and PS Series cylinders are one piece units which allow both radial and axial floating, to eliminate alignment problems. Their double action feature also eliminates the need for a check valve which requires constant maintenance.

At the end of a stroke, this cushion seal permits air to exit through the needle valve orifice only. On the return stroke, the cushion seal allows air to pass behind the piston thus obtaining a much more rapid return.

The RDC Control needle valve is designed with extra fine threads (UNEF) to obtain an easy and precise adjustment. These needle valves are normally situated on side no. 2 of the cylinder. In the case of trunnion mounting (T1, T2 and T3), the needle valve is positioned on side no. 3 of the cylinder.

Standard Piston Wear Strip

All standard pistons on PC and PS Series pneumatic cylinders are equipped with a bronze and glass impregnated teflon wear band. In addition to giving the piston a more secure fit, the self lubricating feature protects the interior surface and adds to the life of the cylinder.

Cartridge Type Gland Bushing

The gland bushing of the PC and PS Series cylinders is designed for easy removal, thus allowing easy seal maintenance without dismantling the entire cylinder. For piston rod diameters less than or equal to 1 3/4, a simple wrench may be used.

For piston rod diameters greater than 1 3/4, the nonthreaded glandbushing is held in place with a removable bolted-on plate.

Barrel Seal

A nitrile O RING.

Head and Cap

Numerically controlled machined from hot rolled steel plates ASTM A36 or better.

Piston Packings

Pressure sensitive double lip seals for better sealing and durability.

Cylinder Barrel

D.O.M. heavy wall steel tubing with a polished chrome plated interior for better durability.

Cushion Plunger

Free floating to allow for proper centering. Made from mild steel.

Cushion Seal

A floating urethane seal that also serves as a check valve, to allow the piston a rapid start.

Tie Rods and Nuts

High strength steel barstock along with zinc plated steel nuts (Grade 5).

Gland Bushing

Cartridge type, made from Bronze SAE 660. Seals can be replaced without dismantling the cylinder.

Piston Rod

High carbon content steel SAE 1045, ground, polished and chrome plated.
(Chrome plated #316 stainless steel available on request).


Made from steel, it secures the piston to the piston rod. Replaced with a standard nut for non cushioning applications.

Piston Wear Strip

It consists of a teflon tape filled with particles of glass and bronze, for smoother piston operation.


Bore size from 3 1/4 to 8:
Numerically controlled machined, from high strength aluminum barstock (6061-T6). Bore size from 10 to 14:
Made from high quality steel.

Cushion Adjustment Screw

Manufactured from #303 stainless steel, complete with extra fine threads to obtain precise adjustment.

Seals and Packing

U CUP and O RING used for added security. A high durometer nitrile material is offered as a standard for a temperature rating from -34°C to 80°C (-30°F to 180°F). For temperature ranges of up to 250°C (450°F), fluorocarbon (viton) seals and packings are available.

Rod Wiper

Stops dust and other particles from entering into the cylinder. Standard material is polyurethane. It can be replaced by fluorocarbon (viton) for higher temperature applications.