NFPA Cylinders
NFPA cylinders tailored for pneumatic systems adhere to the rigorous standards set by the National Fluid Power Association. These cylinders offer a robust, standardized solution for achieving efficient linear motion within pneumatic automation setups. With adherence to NFPA guidelines, these cylinders ensure compatibility, interchangeability, and easy integration across various manufacturers' components. In various sizes and configurations, NFPA pneumatic cylinders enable precise control and reliable performance in applications spanning manufacturing, packaging, and material handling. Their standardized design simplifies maintenance and replacement, making them a preferred choice for achieving streamlined automation and optimal productivity.
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Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Namur Valve Block Adapter KIT R433087680. Industrial-air component for use in pneumatic systems on automated machinery. Common across OEM machinery and industrial automation that relies on compressed-air actuation. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
PH R433025221. Air-system component used in industrial machinery, automation cells, and OEM equipment. Used in factory automation, machine assembly, and OEM equipment with pneumatic subsystems. Authorized Aventics distribution; manufacturer warranty included.
$1,754.20
Available for Purchase
Subject to factory lead times
Pivot PIN 2.00X5.281X5.719 R433088314. Aventics pneumatic component for use in air-driven industrial equipment. Configured with 2.00″ × 5.281″ dimensional reference. Specified during machine integration on assembly, packaging, processing, and handling equipment. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
PP R433012663. Compressed-air system component for OEM machinery and factory automation. Specified by machine builders for pneumatic system integration on assembly, packaging, and material-handling equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$152.80
Available for Purchase
Subject to factory lead times
PP R433012664. Industrial pneumatic component for use in machine builds and automation cells. Specified by machine builders for pneumatic system integration on assembly, packaging, and material-handling equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$392.53
Available for Purchase
Subject to factory lead times
PP R433035490. Compressed-air component for industrial machinery and automation systems. Used in factory automation, machine assembly, and OEM equipment with pneumatic subsystems. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, NPT Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Milwaukee Cylinder - Heavy Duty Hydraulic NFPA Tie Rod Cylinder, 6 Inch Bore, 4 Inch Rod Size, Rod End Trunnion Mount (H71/MT1), Cushining Both Ends, Short Female (KK5) Rod End Style, SAE Ports, Pressure Rating: Recommended Pressure Rating is 1500 PSI, Seals: Buna. Note: Many other sizes, mounting options, rod ends styles, seal material, and custom designs are available. Contract Centro to discuss your application.
$3,454.38
Available for Purchase
Subject to factory lead times
Namur Valve Block Adapter KIT R433087680. Industrial-air component for use in pneumatic systems on automated machinery. Common across OEM machinery and industrial automation that relies on compressed-air actuation. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
PH R433025221. Air-system component used in industrial machinery, automation cells, and OEM equipment. Used in factory automation, machine assembly, and OEM equipment with pneumatic subsystems. Authorized Aventics distribution; manufacturer warranty included.
$1,754.20
Available for Purchase
Subject to factory lead times
Pivot PIN 2.00X5.281X5.719 R433088314. Aventics pneumatic component for use in air-driven industrial equipment. Configured with 2.00″ × 5.281″ dimensional reference. Specified during machine integration on assembly, packaging, processing, and handling equipment. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
PP R433012663. Compressed-air system component for OEM machinery and factory automation. Specified by machine builders for pneumatic system integration on assembly, packaging, and material-handling equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$152.80
Available for Purchase
Subject to factory lead times
PP R433012664. Industrial pneumatic component for use in machine builds and automation cells. Specified by machine builders for pneumatic system integration on assembly, packaging, and material-handling equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$392.53
Available for Purchase
Subject to factory lead times
PP R433035490. Compressed-air component for industrial machinery and automation systems. Used in factory automation, machine assembly, and OEM equipment with pneumatic subsystems. Stocked through our authorized Aventics distribution channel.
Requires Quote
Available for Purchase
Subject to factory lead times
FAQS
- An NFPA pneumatic cylinder is a heavy-duty, tie-rod construction air cylinder built to the dimensional and mounting standards defined by the National Fluid Power Association (NFPA). The NFPA standard specifies exact bore sizes, mounting dimensions, rod diameters, port sizes, and overall envelope dimensions so that cylinders from any NFPA-compliant manufacturer are dimensionally interchangeable. This means an NFPA cylinder from one manufacturer can be replaced with an NFPA cylinder from another manufacturer without modifying the mounting holes, piping connections, or machine structure. NFPA cylinders are the standard for heavy-duty industrial applications requiring high force, long stroke capability, and the assurance of multi-source interchangeability for maintenance and procurement flexibility.
- The primary advantage of NFPA cylinders is interchangeability — standardized dimensions guarantee that a replacement cylinder from any NFPA-compliant manufacturer will bolt directly into the existing mounting, connect to the existing piping, and interface with the existing rod connections without modification. This provides significant procurement advantages: you are not locked into a single manufacturer, you can source from multiple suppliers for competitive pricing and faster delivery, and maintenance personnel can stock common NFPA sizes that fit multiple machines from different OEMs. NFPA cylinders are also designed for repairability — the tie-rod construction allows complete disassembly for seal replacement and internal inspection, extending service life through multiple rebuild cycles. The heavy-duty construction with precision-honed bores, hard-chrome rods, and quality seal materials provides long, reliable service in demanding industrial environments.
- NFPA cylinders are available in standard bore sizes typically ranging from 1-1/2 inches to 8 inches (and larger in some product lines), covering force outputs from several hundred pounds to over 5,000 pounds at 100 PSI. Stroke lengths are available from fractions of an inch to several feet, with custom strokes commonly available. The NFPA standard defines multiple mounting styles, each identified by a standard code: head rectangular flange, cap rectangular flange, head square flange, cap square flange, side lug, side tapped, centerline lug, centerline tapped, head trunnion, cap trunnion, intermediate trunnion, clevis, and extended tie rod mounts, among others. This comprehensive range of standardized mounting options allows the same cylinder series to be installed in virtually any machine configuration.
- Choose an NFPA cylinder when the application requires any of the following: high force output (bore sizes 1-1/2 inches and larger with proportionally high forces), long stroke length (strokes beyond what compact or round body cylinders can reliably deliver), heavy-duty construction for demanding industrial environments (high cycle rates, high pressures, dirty or corrosive conditions), repairability (the ability to rebuild the cylinder with seal kits rather than replacing the entire unit), and multi-source interchangeability (the assurance that replacement cylinders from any manufacturer will fit without machine modifications). Choose compact or round body cylinders when the application involves lighter forces, shorter strokes, tighter space constraints, and the lower cost and lighter weight of these simpler designs is advantageous. In general, NFPA cylinders are the standard choice for primary machine functions in heavy industrial applications, while compact and round body cylinders handle lighter-duty auxiliary functions.
- NFPA cylinders are designed for field repair through complete disassembly and seal replacement. To rebuild: depressurize and disconnect all air lines. Remove the tie rods (the long bolts that hold the end caps to the barrel) and slide the end caps off the barrel. Remove the piston and rod assembly. Inspect the bore for scoring, scratching, or corrosion — minor surface imperfections can be honed, but deep damage may require barrel replacement. Inspect the rod for scoring, pitting, or chrome flaking — damaged rods should be replaced or rechromed. Replace all seals, O-rings, wear bands, and wipers with the correct seal kit for the cylinder model and bore size. Lubricate all seals during reassembly. Reassemble, torque tie rods to specification, reconnect air lines, and test. Establishing a preventive maintenance schedule based on cycle count or calendar intervals — rather than running to failure — minimizes unplanned downtime.