The durable pneumatic cylinders and air cylinders you need to power your equipment. Explore our aluminum cylinders, steel cylinders, double-acting cylinders, heavy-duty cylinders, and more, or contact our team to customize a cylinder to your exact specifications.
Aluminum Head NFPA Cylinder
EPC (Economic Precision)
Our EPC cylinder is made of the highest quality, T6066 aluminum. The precision tube is honed and Rockwell hardened to 60 on the Rockwell scale. We use a precision ground, chrome-plated piston rod and only stress-proof tie rods are used. We also have an industry-leading rod-bearing design.
The Nopak EPC cylinder is custom created and fabricated to meet every unique application.
LLC Cylinder Lines
Class 1-2-M
Heavy-duty cast head pneumatic cylinder line. Exclusive design
has been “user-proven” with over 60 years as the workhorse of the industry. Each assembly is pre-lubricated and 100 % pressure tested. Over 5 mounting styles in 11 bore sizes.
Features
- It has hard-coated aluminum cylinder tubes. Class M cylinders come with chrome-plated I.D. steel tubing that is furnished for 10" through 14" diameter cylinders. It is also equipped with welded flanges.
- It is further equipped with a ball check valve that can be easily opened. The valve not only takes care of the starting under full power but also allows line pressure to act on the entire piston area in no time.
- Cylinders have hard chrome plated steel piston rods. The rods are threaded in one of three types of rod ends. Different oversize diameter rods can be accommodated in all standard rod head castings.
- It has an adjustable cushion that gives it a variable cushioning feature and prevents noisy, damaging metal-to-metal impact of the piston against cylinder heads.
- The threading packing gland is locked by three positive seal V-Ring Nylok inserts which enables it to maintain proper packing compressions. Larger diameters employ a piston rod bushing gland and bolted retainer ring.
- It has a recessed gasket seal that is present between the cylinder wall and head in Class 1 cylinders. The seal is usually made leakproof.
- The cylinder heads are made of iron alloy which makes them durable and long-lasting. When standard and special heads are combined, it makes the cylinders versatile and capable of carrying out special applications.
Class 1-2-M-SVR
Severe Service Cylinders. Heavy-duty cast head pneumatic cylinder line. Exclusive design has been “user-proven” with over 60 years as the workhorse of the industry. Each assembly is pre-lubricated and 100 % pressure tested. Over 5 mounting styles in 11 bore sizes.
Features
- The piston rod packing box is fabricated in a way to make it an ideal fit for oversize rods and double bearings with bolt-on steel packing retainers
- The diameter of the piston rod is usually larger than that of the OB rod.
- The rod seals are easily adjustable and are available in fabric-reinforced nitrile or fabric-reinforced Fluorocarbon. They come in multiple stacks split V-Packing.
- The piston rod thread lengths are longer than standard Class 1, 2, M to build in a hex jam nut.
Class 3
NFPA interchangeable high-pressure hydraulic cylinder product line. Time-proven 3-groove piston with cast iron rings outboard and a "GT" positive seal in the center groove. Each assembly is proof tested (as a pressure vessel) at 5000 PSI. Over 20 mounting styles in 14 bore sizes and all popular rod sizes available.
Features
- Enhanced cushion adjustment: Newly designed needle valve is interchangeable with the current design which offers better sealing characteristics.
- Piston: High strength, fine grain cast iron piston fitted with split “Tongue-seal” cast iron piston rings on either side of a homogenous “T” ring supplied with back-up rings. “T” ring furnished on all models; oversized are fitted with piston rings. The outboard piston rings effectively seal off initial shock loads and allow the “T” ring to provide a leak-proof piston seal with maximum life.
- Tie rod: Material stress-proof steel for maximum strength. Multiple tie rods in each corner are furnished on all models, 10” thru 20” diameter bores.
- Rod wiper: Wipes rod clean and dry. Keeps foreign matter from entering the cylinder, extending packing life.
- End caps: (Cylinder heads) Precision broached steel blocks.
- Cushion adjustment needle: Needle valves and ball check drilling and machining are identical, making the location of these functions interchangeable.
- Heavy wall: Steel tubing, precision-honed with extra-long stones to provide over-lap and eliminate a spiral condition detrimental to long-stroke cylinders. The resulting ultra-smooth finish provides maximum seal life.
- Rod Packing: Choice of self-adjusting to pressure, multi-lip split seal or continuous pre-loaded lip seal.
- Rod ends threading: Choice of standard catalogue male and female thread types plus standard wrench flats.
- Tube seal: Two-Step Pilot Recess Grooves afford Positive Controlled Squeeze on Pressure Sealed O-Ring, while Tubing locates concentrically against End Cap.
- Piston rod: High tensile 100,000PSI minimum yield stress-proof steel, ground, polished, and flash chrome plated .0003/.0005 to provide a hard, long-wearing surface with low friction, but not corrosion resistant. Consult the factory for special applications.
- Packing gland: Readily removable long bearing type. Rod packing easily replaced without loosening tie rods or dismantling cylinder.
- Cushion ball check: Assures quick starting under full power; pressure acts on full piston area instantaneously.
Class 6
NFPA interchangeable pneumatic steel square head cylinder product line. Hard coated aluminum or non-corrosive steel tube and high strength steel piston rod and tie rods to provide a robust product. Each assembly is pre-lubricated and 100% pressure tested. Over 20 mounting styles in 14 bore sizes and all popular rod sizes available.
Features
- Improved cushion adjustment: Newly designed needle valve is interchangeable with the current design and offers improved sealing characteristics.
- Piston assembly: U-cup packings, one-piece piston.
- Piston rod: High tensile 100,000PSI minimum yield stress-proof steel, ground, polished, and flash chrome plated .0003/.0005 to provide a hard long-wearing surface with low friction but not corrosion resistant.
- Tube seal: Two-step pilot recess grooves afford positive controlled squeeze on pressure sealed O-ring, while tubing locates concentrically against end cap.
- Packing gland: Readily removable long bearing type, held in place with socket head cap screws.
- Rod ends threading: Choice of standard catalogue male and female thread types plus standard wrench flats.
- Cushion adjustment needle: Needle valves and ball check drilling and machining are identical, making the location of these functions interchangeable.
- Cylinder tubing AIR: Hard coated aluminum, or honed, non-corrosive steel, providing an extremely wear-resistant surface and low friction characteristics.
- Cushion ball check: Assures quick starting under full power; pressure acts on full piston area instantaneously.
- Rod packing easily replaced without loosening tie rods or dismantling cylinder.
- End caps: (Cylinder heads) Precision steel blocks.
- Cushion sleeves: Precision-fitted with a predetermined taper to provide gradual deceleration and reduce shock.
- HYDRAULIC: Honed steel tubing standard (H6).
- Tie rod: Material alloy steel for maximum strength. Multiple tie rods in each corner are furnished on all 16” through 20” diameter cylinders.
- Rod packing: Choice of self-adjusting to pressure, multi-lip split seal or continuous pre-loaded lip seal.
- Rod wiper: Wipes rod clean and dry. Keeps foreign matter from entering the cylinder, extending packing life.
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