Linear Cylinders
Centro offers linear cylinders, also known as linear actuators or hydraulic/pneumatic cylinders, which are mechanical devices that convert energy into linear motion. They are widely used in various industries, including manufacturing, automation, construction, and transportation. Linear cylinders consist of a piston or plunger that moves back and forth within a cylindrical housing, generating linear force and motion. These cylinders are powered by hydraulic fluid or compressed air, which is supplied to one side of the cylinder to push the piston in one direction, while the other side vents or returns the fluid to complete the cycle. Linear cylinders come in different designs, such as single-acting (one-directional force) and double-acting (bi-directional force). They offer precise control over linear movement, allowing for precise positioning, lifting, pushing, pulling, and clamping applications. Linear cylinders are essential in various industrial processes, such as material handling, machine tooling, assembly lines, and heavy equipment operations. With their robust construction, reliable performance, and versatility, linear cylinders enable efficient and controlled linear motion in various applications.
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Profile & Tie Rod Cylinder - TRB-DA-050-0100-0-2-2-1-1-3-ACC R480688882. double-acting profile cylinder dimensioned at 50 mm bore × 100 mm stroke for industrial linear-motion duty. Suited to automation cells, indexing tables, and assembly fixtures requiring repeatable cylinder strokes under load. Stocked through our authorized Aventics distribution channel.
$706.61
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0100-0122111100000000000000-A, double acting. Aventics part number R481628308. Genuine Aventics part available from Centro, Inc., an authorized distributor providing manufacturer warranty and expert pneumatic support.
$334.55
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0100-0122111109800000000000-B, double acting. Aventics part number R481629041. Available from Centro, Inc., authorized Aventics distributor. Genuine parts ship with full manufacturer warranty and professional support.
$304.33
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0100-0122411100000000000000-A R480694385. Industrial pneumatic cylinder of profile construction: 50 mm bore, 100 mm stroke, double-acting. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Authorized Aventics distribution; manufacturer warranty included.
$990.75
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0108-0-2-2-1-1-1-ACC R481604068. Profile cylinder built for double-acting operation across a 108 mm stroke, with a 50 mm working bore. Integrates into automated welding, riveting, and clamp-fixture equipment requiring linear actuation. Available from us as an authorized Aventics distributor with manufacturer warranty.
$332.98
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0117-2122111100000000000000-B, double acting. Aventics part number R481625755. Available through Centro, Inc., an authorized Aventics distributor. All parts are genuine and include full manufacturer warranty coverage.
$336.00
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0120-0-2-2-5-1-1-ACC R480600911. Tie-rod cylinder with 50 mm bore, 120 mm stroke, sized for double-acting pneumatic duty on production equipment. Integrates into automated welding, riveting, and clamp-fixture equipment requiring linear actuation. Available from us as an authorized Aventics distributor with manufacturer warranty.
$3,236.42
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0120-1-2-2-1-1-1-ACC R480661105. Industrial profile cylinder, double-acting, with bore 50 mm and stroke 120 mm for repeatable linear motion in machine builds. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. In stock through authorized Aventics distribution with full factory warranty.
$369.87
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0121-0-2-2-1-1-1-BAS R481604081. Provides double-acting linear motion with a 50 mm bore and 121 mm stroke, suited to pressing, clamping, and positioning. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. Available from us as an authorized Aventics distributor with manufacturer warranty.
$301.99
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0125-0-2-2-1-1-1-ACC R480651329. Pneumatic profile cylinder (double-acting); bore measures 50 mm and stroke length is 125 mm. Found on assembly stations, fixturing jigs, and lift mechanisms where consistent linear stroke is needed. Sold by us as a factory-authorized Aventics distributor.
$339.92
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0125-M016 R432034540. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 125 mm stroke length. Widely deployed in machine builds for door actuation, pressing, ejecting, and similar industrial linear-motion tasks. Authorized Aventics distribution; manufacturer warranty included.
$78.33
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0127-0-2-2-1-1-1-ACC R480686823. Profile cylinder rated for double-acting duty with bore 50 mm and stroke 127 mm for machine-build integration. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Sold by us as a factory-authorized Aventics distributor.
$325.81
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0135-2-2-2-1-1-6-BAS R481609911. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 135 mm stroke length. Selected by OEMs for stamping presses, sealers, lift gates, and ejector mechanisms on automated lines. Sold by us as a factory-authorized Aventics distributor.
$494.62
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0140-0-2-1-1-1-1-ACC R480679865. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 140 mm bore × stroke for industrial use. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Genuine Aventics part shipped through authorized distribution.
$335.23
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481602286. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 145 mm bore × stroke for industrial use. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. Genuine Aventics part shipped through authorized distribution.
$341.95
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481604056. Provides double-acting linear motion with a 50 mm bore and 145 mm stroke, suited to pressing, clamping, and positioning. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Available from us as an authorized Aventics distributor with manufacturer warranty.
$341.70
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481608616. Provides double-acting linear motion with a 50 mm bore and 145 mm stroke, suited to pressing, clamping, and positioning. Found on assembly stations, fixturing jigs, and lift mechanisms where consistent linear stroke is needed. Stocked through our authorized Aventics distribution channel.
$396.41
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0150-0-1-1-1-1-1-BAS R480672608. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 150 mm stroke length. Frequently specified for clamping fixtures, lift gates, and material-pushing stations in continuous-process equipment. Stocked through our authorized Aventics distribution channel.
$289.93
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0150-0112111100000000000000-A R481623331. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 150 mm bore × stroke for industrial use. Frequently specified for clamping fixtures, lift gates, and material-pushing stations in continuous-process equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$470.75
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0160-0-2-1-1-1-1-BAS R480620878. Industrial pneumatic cylinder of profile construction: 50 mm bore, 160 mm stroke, double-acting. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. In stock through authorized Aventics distribution with full factory warranty.
$504.57
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0160-0-2-1-1-2-1-BAS R480609084. Pneumatic actuator of profile/tie-rod construction; double-acting, 50 mm bore, 160 mm stroke. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Authorized Aventics distribution; manufacturer warranty included.
$568.05
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-1-1-1-2-1-BAS R481600456. Standard ISO profile cylinder, double-acting, delivering 50 mm-bore force across a 200 mm working stroke. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Stocked through our authorized Aventics distribution channel.
$376.91
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-2-2-1-1-1-BAS R480609473. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 200 mm bore × stroke for industrial use. Suited to automation cells, indexing tables, and assembly fixtures requiring repeatable cylinder strokes under load. Sold by us as a factory-authorized Aventics distributor.
$514.79
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-2-2-5-1-1-ACC R480622496. Industrial profile cylinder, double-acting, with bore 50 mm and stroke 200 mm for repeatable linear motion in machine builds. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Available from us as an authorized Aventics distributor with manufacturer warranty.
$3,256.76
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0100-0-2-2-1-1-3-ACC R480688882. double-acting profile cylinder dimensioned at 50 mm bore × 100 mm stroke for industrial linear-motion duty. Suited to automation cells, indexing tables, and assembly fixtures requiring repeatable cylinder strokes under load. Stocked through our authorized Aventics distribution channel.
$706.61
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0100-0122111100000000000000-A, double acting. Aventics part number R481628308. Genuine Aventics part available from Centro, Inc., an authorized distributor providing manufacturer warranty and expert pneumatic support.
$334.55
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0100-0122111109800000000000-B, double acting. Aventics part number R481629041. Available from Centro, Inc., authorized Aventics distributor. Genuine parts ship with full manufacturer warranty and professional support.
$304.33
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0100-0122411100000000000000-A R480694385. Industrial pneumatic cylinder of profile construction: 50 mm bore, 100 mm stroke, double-acting. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Authorized Aventics distribution; manufacturer warranty included.
$990.75
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0108-0-2-2-1-1-1-ACC R481604068. Profile cylinder built for double-acting operation across a 108 mm stroke, with a 50 mm working bore. Integrates into automated welding, riveting, and clamp-fixture equipment requiring linear actuation. Available from us as an authorized Aventics distributor with manufacturer warranty.
$332.98
Available for Purchase
Subject to factory lead times
TRB Series Profile and Tie Rod Cylinder. TRB-DA-050-0117-2122111100000000000000-B, double acting. Aventics part number R481625755. Available through Centro, Inc., an authorized Aventics distributor. All parts are genuine and include full manufacturer warranty coverage.
$336.00
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0120-0-2-2-5-1-1-ACC R480600911. Tie-rod cylinder with 50 mm bore, 120 mm stroke, sized for double-acting pneumatic duty on production equipment. Integrates into automated welding, riveting, and clamp-fixture equipment requiring linear actuation. Available from us as an authorized Aventics distributor with manufacturer warranty.
$3,236.42
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0120-1-2-2-1-1-1-ACC R480661105. Industrial profile cylinder, double-acting, with bore 50 mm and stroke 120 mm for repeatable linear motion in machine builds. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. In stock through authorized Aventics distribution with full factory warranty.
$369.87
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0121-0-2-2-1-1-1-BAS R481604081. Provides double-acting linear motion with a 50 mm bore and 121 mm stroke, suited to pressing, clamping, and positioning. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. Available from us as an authorized Aventics distributor with manufacturer warranty.
$301.99
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0125-0-2-2-1-1-1-ACC R480651329. Pneumatic profile cylinder (double-acting); bore measures 50 mm and stroke length is 125 mm. Found on assembly stations, fixturing jigs, and lift mechanisms where consistent linear stroke is needed. Sold by us as a factory-authorized Aventics distributor.
$339.92
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0125-M016 R432034540. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 125 mm stroke length. Widely deployed in machine builds for door actuation, pressing, ejecting, and similar industrial linear-motion tasks. Authorized Aventics distribution; manufacturer warranty included.
$78.33
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0127-0-2-2-1-1-1-ACC R480686823. Profile cylinder rated for double-acting duty with bore 50 mm and stroke 127 mm for machine-build integration. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Sold by us as a factory-authorized Aventics distributor.
$325.81
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0135-2-2-2-1-1-6-BAS R481609911. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 135 mm stroke length. Selected by OEMs for stamping presses, sealers, lift gates, and ejector mechanisms on automated lines. Sold by us as a factory-authorized Aventics distributor.
$494.62
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0140-0-2-1-1-1-1-ACC R480679865. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 140 mm bore × stroke for industrial use. Common on web-handling, converting, and printing equipment where precise extend/retract motion drives a process step. Genuine Aventics part shipped through authorized distribution.
$335.23
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481602286. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 145 mm bore × stroke for industrial use. Used on tray loaders, pallet handling stations, and case-sealing machinery for repeatable linear duty. Genuine Aventics part shipped through authorized distribution.
$341.95
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481604056. Provides double-acting linear motion with a 50 mm bore and 145 mm stroke, suited to pressing, clamping, and positioning. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Available from us as an authorized Aventics distributor with manufacturer warranty.
$341.70
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0145-0-2-2-1-1-1-ACC R481608616. Provides double-acting linear motion with a 50 mm bore and 145 mm stroke, suited to pressing, clamping, and positioning. Found on assembly stations, fixturing jigs, and lift mechanisms where consistent linear stroke is needed. Stocked through our authorized Aventics distribution channel.
$396.41
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0150-0-1-1-1-1-1-BAS R480672608. Heavy-duty double-acting profile cylinder; the 50 mm bore delivers force across a 150 mm stroke length. Frequently specified for clamping fixtures, lift gates, and material-pushing stations in continuous-process equipment. Stocked through our authorized Aventics distribution channel.
$289.93
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0150-0112111100000000000000-A R481623331. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 150 mm bore × stroke for industrial use. Frequently specified for clamping fixtures, lift gates, and material-pushing stations in continuous-process equipment. Available from us as an authorized Aventics distributor with manufacturer warranty.
$470.75
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0160-0-2-1-1-1-1-BAS R480620878. Industrial pneumatic cylinder of profile construction: 50 mm bore, 160 mm stroke, double-acting. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. In stock through authorized Aventics distribution with full factory warranty.
$504.57
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0160-0-2-1-1-2-1-BAS R480609084. Pneumatic actuator of profile/tie-rod construction; double-acting, 50 mm bore, 160 mm stroke. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Authorized Aventics distribution; manufacturer warranty included.
$568.05
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-1-1-1-2-1-BAS R481600456. Standard ISO profile cylinder, double-acting, delivering 50 mm-bore force across a 200 mm working stroke. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Stocked through our authorized Aventics distribution channel.
$376.91
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-2-2-1-1-1-BAS R480609473. Tie-rod-style profile cylinder (double-acting) sized at 50 mm × 200 mm bore × stroke for industrial use. Suited to automation cells, indexing tables, and assembly fixtures requiring repeatable cylinder strokes under load. Sold by us as a factory-authorized Aventics distributor.
$514.79
Available for Purchase
Subject to factory lead times
Profile & Tie Rod Cylinder - TRB-DA-050-0200-0-2-2-5-1-1-ACC R480622496. Industrial profile cylinder, double-acting, with bore 50 mm and stroke 200 mm for repeatable linear motion in machine builds. Common applications include automated assembly, packaging machinery, materials handling, and OEM equipment where guided linear motion is required. Available from us as an authorized Aventics distributor with manufacturer warranty.
$3,256.76
Available for Purchase
Subject to factory lead times
FAQS
- A pneumatic linear cylinder (also called an air cylinder) is an actuator that uses compressed air to produce straight-line (linear) motion and force. It consists of a cylindrical bore (barrel), a piston that slides inside the bore, and a piston rod attached to the piston that extends through one end of the cylinder. When compressed air is directed into the cylinder on one side of the piston, the pressure acts on the piston area to create a force that pushes the piston and rod in a straight line. In a double-acting cylinder, air can be applied to either side of the piston to produce force in both the extend and retract directions. In a single-acting cylinder, air drives the piston in one direction and a spring returns it in the other. The force output depends on the bore size (piston area) and the air supply pressure — larger bores and higher pressures produce more force. Compact Automation linear cylinders available through Centro are offered in bore sizes from 3/4 inch to 8 inches, producing forces up to 5,030 pounds at 100 PSI, constructed of anodized aluminum with various mounting, rod end, and sensor options.
- A single-acting pneumatic cylinder uses compressed air to drive the piston in one direction (typically extend) and relies on an internal spring to return the piston in the opposite direction when air is exhausted. Single-acting cylinders require only one air line and a 3/2-way directional valve, making the pneumatic circuit simpler. However, the spring consumes some of the available force (the air must overcome the spring force in the power stroke), and the return stroke force is limited to the spring force. Single-acting cylinders are used for simple applications like clamping, ejecting, and pressing where force is needed in only one direction. A double-acting pneumatic cylinder uses compressed air on both sides of the piston — one port drives the piston forward (extend) and the other drives it backward (retract), with full air-powered force available in both directions. Double-acting cylinders require two air lines and a 5/2-way directional valve. They are the most common type used in industrial automation because they provide powered motion and force control in both directions, which is needed for most machine functions.
- The bore size determines the cylinder's force output at a given air pressure. To select the right bore size, first calculate the force needed to perform the work — this includes the force to move the load (weight times friction coefficient for horizontal motion, or weight for vertical lifting), any process force (pressing, clamping, punching), acceleration force (to bring the load up to speed within the available time), and any additional friction or resistance in the mechanism. Add a safety factor (typically 25-50% above the calculated force) to ensure reliable operation. Then calculate the bore size needed: Force = Pressure × Piston Area, so Piston Area = Force ÷ Pressure. From the piston area, calculate the bore diameter. Select the next standard bore size that meets or exceeds the required area. Standard bore sizes from Compact Automation available through Centro range from 3/4 inch to 8 inches. Always verify that the selected cylinder fits the available space and that the mounting and rod end configurations are compatible with the machine design.
- Pneumatic linear cylinders are available in numerous mounting styles to accommodate different machine designs and load orientations. Fixed mounts hold the cylinder body rigidly in place — these include nose mounting (threaded or flanged at the rod end), tail mounting (at the cap end), foot mounting (L-brackets or base plates bolted to the machine frame), and flange mounting (front or rear). Fixed mounts are used when the cylinder pushes or pulls in a straight line with no angular misalignment. Pivot mounts allow the cylinder body to swing in an arc as it operates — these include trunnion mounting (pivot pins on the sides of the cylinder), clevis mounting (a U-bracket at the cap end), and spherical bearing mounts. Pivot mounts are used when the cylinder drives a lever, linkage, or any mechanism where the load path changes angle as the cylinder extends. The correct mounting style depends on the application's load direction, whether the cylinder needs to pivot during operation, available space, and how the cylinder interfaces with the machine structure. Centro carries cylinders configurable with a wide variety of mounting styles.
- Repairable pneumatic cylinders are designed so that the internal wear components (piston seals, rod seals, piston, and rod bearing) can be accessed and replaced when they wear out, extending the cylinder's service life through multiple rebuild cycles. They typically have a tie-rod or threaded body construction that can be disassembled, and replacement seal kits are available from the manufacturer. Repairable cylinders are the standard choice for heavy-duty, high-cycle, or critical applications where the cylinder is expected to operate for years and periodic maintenance is more economical than replacement. Non-repairable pneumatic cylinders are constructed so that the body cannot be easily disassembled for internal repairs — when the seals wear out, the entire cylinder is replaced. They are typically smaller, lighter, and less expensive than repairable cylinders, constructed with stainless steel tubing and aluminum heads. Compact Automation offers non-repairable cylinders in bore sizes from 5/16 inch to 3 inches with forces up to 700 pounds at 100 PSI. Non-repairable cylinders are the standard choice for lighter-duty applications, smaller bore sizes, and installations where the lower initial cost and compact size outweigh the long-term economics of rebuild capability.