Select a cylinder, prolong its life by reducing wear, and trigger automated processes with sensors.
Impact-Resistant Round Body Air Cylinders
Built to withstand hard knocks, these cylinders have a thick barrel wall for more durability than standard air cylinders. They combine the form of a round body air cylinder with the rugged construction of a tie-rod body air cylinder. All are double acting; they use air to exert force in both directions.
Face/pivot-mount cylinders have mounting holes on both ends, so you can install in a fixed position or in a pivoting mount. Sensor-ready cylinders have a magnetic piston to activate relays and controllers. When the piston moves past the sensor (sold separately), the sensor activates. You can use multiple sensors. Attach one for each action you want to trigger.

Lg. | Air Inlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Type | Gender | Each | |
3/4" Bore Size (1.02" OD) | |||||||||
| 3 1/2" | 7.3" | 10.8" | 42 | Aluminum | 1/8 | NPT | Female | 6471K108 | 000000 |
1" Bore Size (1.22" OD) | |||||||||
| 3 1/2" | 7.42" | 10.92" | 66 | Aluminum | 1/8 | NPT | Female | 6471K128 | 00000 |
1 1/4" Bore Size (1 1/2" OD) | |||||||||
| 3 1/2" | 8.01" | 11.51" | 102 | Aluminum | 1/8 | NPT | Female | 6471K138 | 00000 |
1 1/2" Bore Size (1.85" OD) | |||||||||
| 3 1/2" | 8.28" | 11.78" | 170 | Aluminum | 1/8 | NPT | Female | 6471K148 | 00000 |
2" Bore Size (2.28" OD) | |||||||||
| 3 1/2" | 9.19" | 12.69" | 264 | Aluminum | 1/4 | NPT | Female | 6471K158 | 00000 |
2 1/2" Bore Size (2.83" OD) | |||||||||
| 3 1/2" | 9.19" | 12.69" | 411 | Aluminum | 1/4 | NPT | Female | 6471K168 | 000000 |

| For Bore Size | Material | Includes | Each | |
| 3/4" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K65 | 00000 |
| 1" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K66 | 00000 |
| 1 1/4" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K67 | 00000 |
| 1 1/2" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K68 | 00000 |
| 2" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K69 | 00000 |
| 2 1/2" | Nickel-Plated Steel | Four Bolts, Pin, Retaining Rings | 6471K77 | 00000 |

| For Bore Size | Material | Includes | Each | |
| 3/4" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K91 | 00000 |
| 1" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K92 | 0000 |
| 1 1/4" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K93 | 00000 |
| 1 1/2" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K94 | 00000 |
| 2" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K95 | 00000 |
| 2 1/2" | Nickel-Plated Steel | Trunnion Bolts, Trunnion Pins, Washers | 6471K96 | 00000 |

| For Bore Size | Material | Pin Material | Includes | Each | |
| 3/4" | Trivalent Chromium Steel | Steel | Nut, Pin, Retaining Rings | 6471K61 | 00000 |
| 1" | Trivalent Chromium Steel | Steel | Nut, Pin, Retaining Rings | 6471K62 | 0000 |
| 1 1/4", 1 1/2" | Trivalent Chromium Steel | Steel | Nut, Pin, Retaining Rings | 6471K63 | 0000 |
| 2", 2 1/2" | Trivalent Chromium Steel | Steel | Nut, Pin, Retaining Rings | 6471K64 | 0000 |

| For Bore Size | Includes | Each | |
| 3/4" | Piston Seal, Rod Seal, Tube Gasket | 6471K87 | 00000 |
| 1" | Piston Seal, Rod Seal, Tube Gasket | 6471K88 | 0000 |
| 1 1/4" | Piston Seal, Rod Seal, Tube Gasket | 6471K89 | 0000 |
| 1 1/2" | Piston Seal, Rod Seal, Tube Gasket | 6471K57 | 0000 |
| 2" | Piston Seal, Rod Seal, Tube Gasket | 6471K58 | 0000 |
| 2 1/2" | Piston Seal, Rod Seal, Tube Gasket | 6471K59 | 00000 |
Washdown Round Body Air Cylinders

Able to resist corrosive solutions and chemical environments, these cylinders withstand washdown conditions. They have a round body—the most common style of air cylinder—making them more compact and better suited for tight spaces than cylinders with external tie rods. Since they’re double-acting, they use air to both extend and retract light duty loads at nearly full force in either direction. All are universal mount, so they have threads on both ends. The back end has a pivot bushing, which allows for more mounting options than nose-mount cylinders.
Universal-mount cylinders have a rod wiper to keep contaminants out.
Sensor-ready universal-mount cylinders have a magnetic piston that can activate relays and controllers when used with a sensor (sold separately). When the piston moves past the sensor, the sensor activates. You can use multiple sensors—attach one for each action to trigger. These cylinders also have acetal end caps for excellent corrosion resistance at a lower cost than all-stainless cylinders.
Lg. | Air Inlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Type | Gender | Each | |
3/4" Bore Size (0.86" OD) | |||||||||
| 3 1/2" | 8.03" | 11.53" | 40 | 304 Stainless Steel | 1/8 | NPT | Female | 6239K109 | 0000000 |
1 1/16" Bore Size (1.11" OD) | |||||||||
| 3 1/2" | 8.12" | 11.62" | 90 | 304 Stainless Steel | 1/8 | NPT | Female | 6239K156 | 000000 |
1 1/2" Bore Size (1.56" OD) | |||||||||
| 3 1/2" | 9.01" | 12.51" | 170 | 304 Stainless Steel | 1/8 | NPT | Female | 6239K203 | 000000 |
2" Bore Size (2.09" OD) | |||||||||
| 3 1/2" | 10.45" | 13.95" | 310 | 304 Stainless Steel | 1/4 | NPT | Female | 6239K249 | 000000 |

Instead of attaching your round body air cylinder directly to equipment, add a mount to best suit your application.
Foot brackets prevent cylinders from moving back and forth.
Pivot brackets for universal-mount air cylinders allow the rear portion of cylinders to pivot back and forth.
Rod clevises thread to cylinder shafts to allow swiveling.
Rod ends are internally threaded. They have an eyelet and ball that swivel to support angular misalignment and allow for pivoting.
Rod end nuts are internally threaded. They have an eyelet to make pivoting and hinge movements.
Stainless steel mounts are more corrosion resistant than steel and aluminum for use in wet or damp environments.

Instead of attaching your round body air cylinder directly to equipment, add a mount to best suit your application.
Foot brackets prevent cylinders from moving back and forth.
Pivot brackets for universal-mount air cylinders allow the rear portion of cylinders to pivot back and forth.
Rod clevises thread to cylinder shafts to allow swiveling.
Rod ends are internally threaded. They have an eyelet and ball that swivel to support angular misalignment and allow for pivoting.
Rod end nuts are internally threaded. They have an eyelet to make pivoting and hinge movements.
Stainless steel mounts are more corrosion resistant than steel and aluminum for use in wet or damp environments.

Instead of attaching your round body air cylinder directly to equipment, add a mount to best suit your application.
Foot brackets prevent cylinders from moving back and forth.
Pivot brackets for universal-mount air cylinders allow the rear portion of cylinders to pivot back and forth.
Rod clevises thread to cylinder shafts to allow swiveling.
Rod ends are internally threaded. They have an eyelet and ball that swivel to support angular misalignment and allow for pivoting.
Rod end nuts are internally threaded. They have an eyelet to make pivoting and hinge movements.
Stainless steel mounts are more corrosion resistant than steel and aluminum for use in wet or damp environments.
| For Bore Size | Ht. | Lg. | Jaw Opening Wd. | Thread Size | Material | Includes | Each | |
| 3/4" | 0.5" | 1.19" | 0.26" | 1/4"-28 | Stainless Steel | Nut, Pin, Washers | 6239K291 | 000000 |
| 1 1/16" | 0.5" | 1.19" | 0.26" | 5/16"-24 | Stainless Steel | Nut, Pin, Washers | 6239K292 | 00000 |
| 1 1/2" | 0.75" | 1.69" | 0.39" | 7/16"-20 | Stainless Steel | Nut, Pin, Washers | 6239K293 | 00000 |
| 2" | 0.75" | 1.69" | 0.39" | 1/2"-20 | Stainless Steel | Nut, Pin | 6239K294 | 00000 |
NFPA Tie Rod Air Cylinders

Made to fit the most common mounting footprint, these cylinders have an NFPA (National Fluid Power Association) industry-standard footprint, ensuring easy interchangeability. They have a magnetic piston, so you can use sensors (sold separately) to activate relays and controllers.
Cushioned cylinders have adjustable air cushions that absorb piston impact to minimize wear and noise. Turn the screws at each port to adjust the amount of cushion.
Lg. | Air Inlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Bearing Material | Pipe Size | Thread Type | Gender | Each | |
1 1/2" Bore Size (2" Wd.) | ||||||||||
| 3 1/2" | 8.88" | 12.38" | 177 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6211K102 | 0000000 |
2" Bore Size (2 1/2" Wd.) | ||||||||||
| 3 1/2" | 8.88" | 12.38" | 314 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6211K487 | 000000 |
2 1/2" Bore Size (3" Wd.) | ||||||||||
| 3 1/2" | 9" | 12.5" | 491 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6211K527 | 000000 |
3 1/4" Bore Size (3 3/4" Wd.) | ||||||||||
| 3 1/2" | 10.25" | 13.75" | 830 | Aluminum | PTFE-Coated Cast Iron | 3/8 | NPT | Female | 6211K564 | 000000 |
4" Bore Size (4 1/2" Wd.) | ||||||||||
| 3 1/2" | 10.25" | 13.75" | 1,257 | Aluminum | PTFE-Coated Cast Iron | 3/8 | NPT | Female | 6211K609 | 000000 |
6" Bore Size (6 1/2" Wd.) | ||||||||||
| 3 1/2" | 11.75" | 15.25" | 2,827 | Aluminum | Iron | 3/4 | NPT | Female | 6211K367 | 000000 |
Lg. | Air Inlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Bearing Material | Pipe Size | Thread Type | Gender | Each | |
1 1/2" Bore Size (2" Wd.) | ||||||||||
| 3 1/2" | 8.88" | 12.38" | 177 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6258K105 | 0000000 |
2" Bore Size (2 1/2" Wd.) | ||||||||||
| 3 1/2" | 8.88" | 12.38" | 314 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6258K187 | 000000 |
2 1/2" Bore Size (3" Wd.) | ||||||||||
| 3 1/2" | 9" | 12.5" | 491 | Aluminum | PTFE-Coated Cast Iron | 1/4 | NPT | Female | 6258K269 | 000000 |
6" Bore Size (6 1/2" Wd.) | ||||||||||
| 3 1/2" | 11.75" | 15.25" | 2,827 | Aluminum | PTFE-Coated Cast Iron | 3/4 | NPT | Female | 6258K885 | 000000 |

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with NFPA tie rod air cylinders.
Front or rear flanges are for straight, back-and-forth movements. These flanges mount to either end of your cylinder.
Pivot brackets and clevis brackets work together to allow the rear portion of cylinders to pivot back and forth. Use either with a clevis rod end to create arcing movements. Rod clevises allow the front portion of cylinders to pivot.
Inside Mounting Holes | Outside Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Wd. | Ht. | Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 1 1/2" | 3 3/8" | 2" | 3/8" | 4 | 0.281" | 1 7/16" | Yes | 4 | 0.313" | 2 3/4" | No | Steel | Four Bolts | 6211K1 | 000000 |
| 2" | 4 1/8" | 2 1/2" | 3/8" | 4 | 0.344" | 1 27/32" | Yes | 4 | 0.375" | 3 3/8" | No | Steel | Four Bolts | 6211K2 | 00000 |
| 2 1/2" | 4 5/8" | 3" | 3/8" | 4 | 0.344" | 2 3/16" | Yes | 4 | 0.375" | 3 7/8" | No | Steel | Four Bolts | 6211K3 | 00000 |
| 6" | 8 5/8" | 6 1/2" | 3/4" | 4 | 0.531" | 4 7/8" | Yes | 4 | 0.563" | 7 5/8" | No | Steel | Eight Bolts | 6211K441 | 000000 |

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with NFPA tie rod air cylinders.
Front or rear flanges are for straight, back-and-forth movements. These flanges mount to either end of your cylinder.
Pivot brackets and clevis brackets work together to allow the rear portion of cylinders to pivot back and forth. Use either with a clevis rod end to create arcing movements. Rod clevises allow the front portion of cylinders to pivot.
Mounting Holes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Pin Hole Dia. | Wd. | Ht. | Dp. | Base Plate Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 1 1/2" | 1/2" | 2" | 2" | 1 3/4" | 3/8" | 4 | 9/32" | 1.438" | Yes | Cast Iron | Four Bolts | 6211K6 | 000000 |
| 2" | 1/2" | 2 1/2" | 2 1/2" | 1 3/4" | 3/8" | 4 | 11/32" | 1.844" | Yes | Cast Iron | Four Bolts | 6211K7 | 00000 |
| 2 1/2" | 1/2" | 3" | 3" | 1 3/4" | 3/8" | 4 | 11/32" | 2.188" | Yes | Cast Iron | Four Bolts | 6211K8 | 00000 |
| 6" | 1" | 6 1/2" | 6 1/2" | 3 1/4" | 3/4" | 4 | 0.531" | 4.879" | Yes | Steel | Four Bolts | 6211K444 | 000000 |

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with NFPA tie rod air cylinders.
Front or rear flanges are for straight, back-and-forth movements. These flanges mount to either end of your cylinder.
Pivot brackets and clevis brackets work together to allow the rear portion of cylinders to pivot back and forth. Use either with a clevis rod end to create arcing movements. Rod clevises allow the front portion of cylinders to pivot.
Pin | Mounting Holes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Dia. | Lg. | Material | Wd. | Ht. | Dp. | Jaw Opening Wd. | Base Plate Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 1 1/2" | 0.5" | 2.42" | Steel | 2" | 2" | 1 3/4" | 3/4" | 3/8" | 4 | 9/32" | 1.438" | Yes | Cast Iron | Cotter Pin, Four Bolts, Four Lock Washers | 6211K55 | 000000 |
| 2" | 0.5" | 2.4" | Steel | 2 1/2" | 2 1/2" | 1 3/4" | 3/4" | 3/8" | 4 | 11/32" | 1.844" | Yes | Cast Iron | Cotter Pin, Four Bolts, Four Lock Washers | 6211K56 | 00000 |
| 2 1/2" | 0.5" | 2.4" | Steel | 3" | 3" | 1 3/4" | 3/4" | 3/8" | 4 | 11/32" | 2.188" | Yes | Cast Iron | Cotter Pin, Four Bolts, Four Lock Washers | 6211K57 | 00000 |
| 6" | 1" | 3 1/2" | Steel | 6 1/2" | 6 1/2" | 3 3/8" | 1 1/2" | 3/4" | 4 | 0.53" | 4.879" | Yes | Cast Iron | Four Bolts | 6211K442 | 000000 |

Connect these mounts to an air cylinder to create linear, pivot, or arc movements. These mounts are compatible with NFPA tie rod air cylinders.
Front or rear flanges are for straight, back-and-forth movements. These flanges mount to either end of your cylinder.
Pivot brackets and clevis brackets work together to allow the rear portion of cylinders to pivot back and forth. Use either with a clevis rod end to create arcing movements. Rod clevises allow the front portion of cylinders to pivot.
Pin | Thread | Shank | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Dia. | Lg. | Material | Lg. | Ht. | Jaw Opening Wd. | Size | Type | Spacing | Lg. | Center Lg. | Gender | Material | Includes | Each | |
| 3 1/4", 4" | 3/4" | 3.094" | Steel | 3 1/8" | 1 1/2" | 1 1/4" | 3/4"-16 | UNF | Fine | 1 1/8" | 2 3/8" | Female | Steel | Cotter Pin | 6211K66 | 0000000 |
| 6" | 1" | 2.719" | Steel | 4 1/8" | 2" | 1 1/2" | 1-14 | UNS | Extra Fine | 1 5/8" | 3 1/8" | Female | Steel | __ | 6211K443 | 000000 |

| For Bore Size | Includes | For Bearing Material | Each | |
Standard | ||||
|---|---|---|---|---|
| 6" | Rod Seal, Rod Wiper, Two Piston Seals, Two Tube Seals | Iron | 6211K901 | 0000000 |
Cushioned | ||||
| 1 1/2" | Rod Seal, Rod Wiper, Two Piston Seals, Two Tube Seals | PTFE-Coated Cast Iron | 6258K711 | 00000 |
| 2" | Rod Seal, Rod Wiper, Two Piston Seals, Two Tube Seals | PTFE-Coated Cast Iron | 6258K712 | 000000 |
| 2 1/2" | Rod Seal, Rod Wiper, Two Piston Seals, Two Tube Seals | PTFE-Coated Cast Iron | 6258K713 | 000000 |
| 6" | Rod Seal, Rod Wiper, Two Piston Seals, Two Tube Seals | PTFE-Coated Cast Iron | 6258K716 | 000000 |

| For Bore Size | AC Voltage Range | DC Voltage Range | Each | |
| 6" | 5V AC- 240V AC | 5V DC- 240V DC | 6211K902 | 000000 |

| For Bore Size | AC Voltage | DC Voltage | Each | |
| 1 1/2", 2", 2 1/2", 3 1/4", 4", 6" | 120V AC | 120V DC | 6258K78 | 000000 |
Tie Rod Air Cylinders
Rods along the barrel of these cylinders secure the end caps and shield the barrel from impact.
Sensor-ready cylinders have a magnetic piston that can trigger one or more sensors (sold separately) to activate relays and controllers.
Cushioned cylinders have adjustable air cushions that absorb piston impact to minimize wear and noise. Turn the screws at each port to adjust the amount of cushion.

Lg. | Air Inlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Sensor Ready | Air Cushion Type | Body Material | Pipe Size | Thread Type | Gender | Each | |
3/4" Bore Size (1" Wd.) | |||||||||||
| 3 1/2" | 6.75" | 10.25" | 44 | Sensor Ready | No Cushion | Aluminum | 1/8 | NPT | Female | 6453K117 | 0000000 |
1 1/8" Bore Size (1 1/2" Wd.) | |||||||||||
| 3 1/2" | 6.75" | 10.25" | 99 | Sensor Ready | No Cushion | Aluminum | 1/8 | NPT | Female | 6453K127 | 000000 |
1 1/4" Bore Size (1 13/16" Wd.) | |||||||||||
| 3 1/2" | 8.03" | 11.53" | 123 | Not Sensor Ready | No Cushion | Aluminum | 1/8 | NPT | Female | 6556K375 | 000000 |
| 3 1/2" | 8.03" | 11.53" | 123 | Sensor Ready | No Cushion | Aluminum | 1/8 | NPT | Female | 4917K106 | 000000 |
| 3 1/2" | 9.03" | 12.53" | 123 | Not Sensor Ready | Adjustable Cushion | Aluminum | 1/8 | NPT | Female | 6556K103 | 000000 |
1 3/4" Bore Size (2 3/8" Wd.) | |||||||||||
| 3 1/2" | 9.55" | 13.05" | 240 | Not Sensor Ready | No Cushion | Aluminum | 1/4 | NPT | Female | 6556K414 | 000000 |
| 3 1/2" | 10.55" | 14.05" | 240 | Not Sensor Ready | Adjustable Cushion | Aluminum | 1/4 | NPT | Female | 6556K142 | 000000 |
2" Bore Size (2 3/8" Wd.) | |||||||||||
| 3 1/2" | 9.55" | 13.05" | 314 | Not Sensor Ready | No Cushion | Aluminum | 1/4 | NPT | Female | 6556K453 | 000000 |
| 3 1/2" | 9.55" | 13.05" | 314 | Sensor Ready | No Cushion | Aluminum | 1/4 | NPT | Female | 4917K275 | 000000 |
| 3 1/2" | 10.55" | 14.05" | 314 | Not Sensor Ready | Adjustable Cushion | Aluminum | 1/4 | NPT | Female | 6556K181 | 000000 |
2 1/2" Bore Size (2 7/8" Wd.) | |||||||||||
| 3 1/2" | 9.55" | 13.05" | 491 | Not Sensor Ready | No Cushion | Aluminum | 3/8 | NPT | Female | 6556K492 | 000000 |
| 3 1/2" | 9.55" | 13.05" | 491 | Sensor Ready | No Cushion | Aluminum | 3/8 | NPT | Female | 4917K359 | 000000 |
| 3 1/2" | 10.55" | 14.05" | 491 | Not Sensor Ready | Adjustable Cushion | Aluminum | 3/8 | NPT | Female | 6556K219 | 000000 |
3" Bore Size (3 3/8" Wd.) | |||||||||||
| 3 1/2" | 9.55" | 13.05" | 707 | Not Sensor Ready | No Cushion | Aluminum | 3/8 | NPT | Female | 6556K531 | 000000 |
| 3 1/2" | 9.55" | 13.05" | 707 | Sensor Ready | No Cushion | Aluminum | 3/8 | NPT | Female | 4917K444 | 000000 |
| 3 1/2" | 10.55" | 14.05" | 707 | Not Sensor Ready | Adjustable Cushion | Aluminum | 3/8 | NPT | Female | 6556K258 | 000000 |
3 1/2" Bore Size (4 1/8" Wd.) | |||||||||||
| 3 1/2" | 10.67" | 14.17" | 962 | Not Sensor Ready | No Cushion | Aluminum | 1/2 | NPT | Female | 6556K569 | 000000 |
| 3 1/2" | 11.67" | 15.17" | 962 | Not Sensor Ready | Adjustable Cushion | Aluminum | 1/2 | NPT | Female | 6556K297 | 000000 |
4 1/2" Bore Size (5 1/8" Wd.) | |||||||||||
| 3 1/2" | 10.67" | 14.17" | 1,590 | Not Sensor Ready | No Cushion | Aluminum | 1/2 | NPT | Female | 6556K608 | 000000 |
| 3 1/2" | 10.67" | 14.17" | 1,590 | Sensor Ready | No Cushion | Aluminum | 1/2 | NPT | Female | 4917K613 | 000000 |

Inside Mounting Holes | Outside Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Wd. | Ht. | Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 1 1/4" | 2 3/4" | 5/8" | 3/8" | 2 | 1/4" | 1.281" | Yes | 2 | 1/4" | 2 5/16" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K17 | 000000 |
| 1 3/4" | 3.593" | 3/4" | 7/16" | 2 | 5/16" | 1.718" | Yes | 2 | 5/16" | 3.031" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K171 | 00000 |
| 2" | 3.593" | 3/4" | 7/16" | 2 | 5/16" | 1 7/8" | Yes | 2 | 5/16" | 3.031" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K172 | 00000 |
| 2 1/2" | 4" | 3/4" | 7/16" | 2 | 5/16" | 2.206" | Yes | 2 | 5/16" | 3 7/16" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K173 | 00000 |
| 3" | 4 1/2" | 3/4" | 7/16" | 2 | 5/16" | 2 5/8" | Yes | 2 | 5/16" | 3.969" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K174 | 00000 |
| 3 1/2" | 5 15/16" | 1" | 5/8" | 2 | 1/2" | 3.224" | Yes | 2 | 1/2" | 5 1/16" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K175 | 00000 |
| 4 1/2" | 7" | 1" | 5/8" | 2 | 1/2" | 4.024" | Yes | 2 | 1/2" | 6 1/16" | No | Steel | Four Screws, Four Washers, Two Flange Bars | 6491K176 | 000000 |

Inside Mounting Holes | Outside Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Wd. | Ht. | Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 3/4" | 2" | 1" | 1/4" | 4 | 0.219" | 3/4" | Yes | 4 | 0.219" | 1 1/2" | No | Steel | Four Screws | 6453K31 | 000000 |
| 1 1/8" | 2 1/2" | 1 1/2" | 1/4" | 4 | 0.219" | 1 1/8" | Yes | 4 | 0.219" | 2" | No | Steel | Four Screws | 6453K32 | 00000 |

Inside Mounting Holes | Outside Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Wd. | Ht. | Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 3/4" | 2" | 1" | 1/4" | 4 | 0.219" | 3/4" | Yes | 4 | 0.219" | 1 1/2" | No | Steel | Two Screws | 6453K41 | 000000 |
| 1 1/8" | 2 1/2" | 1 1/2" | 1/4" | 4 | 0.219" | 1 1/8" | Yes | 4 | 0.219" | 2" | No | Steel | Two Screws | 6453K42 | 00000 |

Mounting Holes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Pin Hole Dia. | Wd. | Ht. | Dp. | Base Plate Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 3/4" | 0.25" | 1" | 3/4" | 1.188" | 3/8" | 2 | 0.154" | 3/4" | Yes | Steel | Two Screws | 6453K51 | 0000000 |
| 1 1/8" | 0.375" | 1 1/2" | 3/4" | 1 1/2" | 3/8" | 2 | 0.154" | 1 1/8" | Yes | Steel | Two Screws | 6453K52 | 000000 |
| 1 1/4" | 0.375" | 1 13/16" | 1 13/16" | 1 15/16" | 1/4" | 4 | 1/4" | 1.281" | Yes | Aluminum | Four Screws, Four Washers | 6491K81 | 00000 |
| 1 3/4" | 0.5" | 2 3/8" | 2 3/8" | 2 1/2" | 3/8" | 4 | 5/16" | 1.718" | Yes | Aluminum | Four Screws, Four Washers | 6491K82 | 00000 |
| 2" | 0.5" | 2 3/8" | 2 3/8" | 2 1/2" | 3/8" | 4 | 1/4" | 1 7/8" | Yes | Aluminum | Four Screws, Four Washers | 6491K179 | 00000 |
| 2 1/2" | 0.625" | 2 7/8" | 2 7/8" | 2 15/16" | 3/8" | 4 | 5/16" | 2.206" | Yes | Aluminum | Four Screws, Four Washers | 6491K83 | 00000 |
| 3 1/2" | 0.75" | 4 1/8" | 4 1/8" | 4" | 3/8" | 4 | 1/2" | 3.224" | Yes | Aluminum | Four Screws, Four Washers | 6491K85 | 00000 |
| 4 1/2" | 0.75" | 5 1/8" | 5 1/8" | 4 7/8" | 3/8" | 4 | 1/2" | 4.024" | Yes | Aluminum | Four Screws, Four Washers | 6491K86 | 00000 |

Pin | Mounting Holes | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Dia. | Lg. | Material | Wd. | Ht. | Dp. | Jaw Opening Wd. | Base Plate Thick. | No. of | Dia. | Ctr.-to-Ctr. | Mounting Hardware Included | Material | Includes | Each | |
| 3/4" | 1/4" | 1.1" | Steel | 3/4" | 1" | 1 3/8" | 0.254" | 3/8" | 2 | 0.254" | 3/4" | Yes | Steel | Cotter Pin, Two Screws | 6453K61 | 000000 |
| 1 1/8" | 3/8" | 1.38" | Steel | 7/8" | 1 1/2" | 1 1/2" | 0.379" | 3/8" | 2 | 0.379" | 1 1/8" | Yes | Steel | Cotter Pin, Two Screws | 6453K62 | 000000 |
| 1 1/4" | 3/8" | 1 9/16" | Steel | 1 13/16" | 1 13/16" | 1 7/16" | 1/4" | 1/4" | 4 | 1/4" | 1.281" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K71 | 00000 |
| 1 3/4" | 1/2" | 1 9/16" | Steel | 2 3/8" | 2 3/8" | 1 7/8" | 1/2" | 3/8" | 4 | 5/16" | 1.718" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K72 | 00000 |
| 2" | 1/2" | 1 1/8" | Steel | 2 3/8" | 2 3/8" | 1 7/8" | 1/2" | 3/8" | 4 | 1/4" | 1 7/8" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K177 | 00000 |
| 2 1/2" | 5/8" | 1 15/16" | Steel | 2 7/8" | 2 7/8" | 2 5/16" | 1/2" | 3/8" | 4 | 5/16" | 2.206" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K73 | 00000 |
| 3" | 5/8" | 1 15/16" | Steel | 3 3/8" | 3 3/8" | 2 15/16" | 1/2" | 3/8" | 4 | 5/16" | 2 5/8" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K74 | 00000 |
| 3 1/2" | 3/4" | 2 1/4" | Steel | 4 1/8" | 4 1/8" | 3 1/16" | 1/2" | 3/8" | 4 | 1/2" | 3.224" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K75 | 00000 |
| 4 1/2" | 3/4" | 2 1/4" | Steel | 5 1/8" | 5 1/8" | 3 3/4" | 1/2" | 3/8" | 4 | 1/2" | 4.024" | Yes | Aluminum | Cotter Pin, Four Screws, Four Washers | 6491K76 | 00000 |

Pin | Shank | Thread | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Dia. | Lg. | Material | Lg. | Ht. | Jaw Opening Wd. | Center Lg. | Gender | Size | Type | Lg. | Material | Includes | Each | |
| 3/4" | 1/4" | 1.1" | Steel | 1.062" | 3/4" | 0.254" | 0.812" | Female | 1/4"-28 | UNF | 0.312" | Steel | Cotter Pin | 6453K63 | 000000 |
| 1 1/8" | 3/8" | 1.38" | Steel | 1 1/4" | 7/8" | 0.379" | 7/8" | Female | 3/8"-24 | UNF | 3/8" | Steel | Cotter Pin | 6453K64 | 00000 |
| 1 1/4" | 3/8" | 1 1/8" | Steel | 1.719" | 3/4" | 1/4" | 1 11/32" | Female | 3/8"-16 | UNC | 3/4" | Steel | Cotter Pin | 6491K61 | 00000 |
| 1 3/4" | 1/2" | 1 9/16" | Steel | 2.641" | 1 1/8" | 1/2" | 2 5/64" | Female | 3/4"-10 | UNC | 1" | Steel | Cotter Pin | 6491K801 | 00000 |
| 2", 2 1/2", 3" | 5/8" | 1 15/16" | Steel | 2.641" | 1 1/8" | 1/2" | 2 5/64" | Female | 3/4"-10 | UNC | 1" | Steel | Cotter Pin | 6491K63 | 00000 |
| 3 1/2", 4 1/2" | 3/4" | 2 1/4" | Steel | 3.078" | 1 1/2" | 1/2" | 2 21/64" | Female | 1"-8 | UNC | 1" | Steel | Cotter Pin | 6491K64 | 00000 |

| For Bore Size | AC Voltage | DC Voltage | Each | |
| 1 1/4", 32mm, 40mm, 1 3/4", 50mm, 2", 63mm, 2 1/2", 3", 80mm, 3 1/2", 4 1/2" | 5V AC- 240V AC | 5V DC- 240V DC | 4917K692 | 000000 |
Compact Tie Rod Air Cylinders
Get the power and stroke of other tie rod cylinders in less than half the space. Cylinders have holes for mounting; one end must be mounted against a solid surface.

Lg. | Air Inlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Type | Gender | Each | |
1 1/16" Bore Size (2" OD) | |||||||||
| 3 1/2" | 4.51" | 8.01" | 90 | 304 Stainless Steel | 1/8 | NPT | Female | 4208K163 | 0000000 |
1 1/2" Bore Size (2.62" OD) | |||||||||
| 3 1/2" | 4.51" | 8.01" | 170 | 304 Stainless Steel | 1/8 | NPT | Female | 4208K185 | 000000 |
2" Bore Size (3.12" OD) | |||||||||
| 3 1/2" | 4.57" | 8.07" | 310 | 304 Stainless Steel | 1/8 | NPT | Female | 4208K207 | 000000 |
2 1/2" Bore Size (3 3/4" OD) | |||||||||
| 3 1/2" | 4.82" | 8.32" | 500 | 304 Stainless Steel | 1/4 | NPT | Female | 4208K229 | 000000 |
3" Bore Size (4 1/4" OD) | |||||||||
| 3 1/2" | 4.88" | 8.38" | 700 | 304 Stainless Steel | 1/4 | NPT | Female | 4208K252 | 000000 |

Lg. | Air Inlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Type | Gender | Each | |
1 1/16" Bore Size (1 1/2" Wd.) | |||||||||
| 3 1/2" | 4.88" | 8.38" | 90 | 304 Stainless Steel | 1/8 | NPT | Female | 6113K141 | 0000000 |
1 1/2" Bore Size (2" Wd.) | |||||||||
| 3 1/2" | 4.88" | 8.38" | 170 | 304 Stainless Steel | 1/8 | NPT | Female | 6113K163 | 000000 |
2 1/2" Bore Size (3 1/4" Wd.) | |||||||||
| 3 1/2" | 5.29" | 8.79" | 500 | 304 Stainless Steel | 1/4 | NPT | Female | 6113K207 | 000000 |
3" Bore Size (3 3/4" Wd.) | |||||||||
| 3 1/2" | 5.34" | 8.84" | 700 | 304 Stainless Steel | 1/4 | NPT | Female | 6113K229 | 000000 |
Nonrotating Compact Tie Rod Air Cylinders

These cylinders have two parallel piston rods that prevent the head from twisting as they extend and retract. They pack force into a smaller footprint than our other tie rod cylinders. Cylinders have holes for mounting; the back end must be mounted against a solid surface.
Sensor-ready cylinders have a magnetic piston that can activate relays and controllers when used with one or more sensors (sold separately).
Lg. | Air Inlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Size | Thread Type | Gender | Each | |
3/4" Bore Size (1 1/2" OD) | ||||||||||
| 3 1/2" | 4.89" | 8.39" | 40 | 304 Stainless Steel | __ | 10-32 | UNF | Female | 5144K118 | 0000000 |
1 1/16" Bore Size (2" OD) | ||||||||||
| 3 1/2" | 5.26" | 8.76" | 90 | 304 Stainless Steel | 1/8 | __ | NPT | Female | 5144K141 | 000000 |
1 1/2" Bore Size (2.63" OD) | ||||||||||
| 3 1/2" | 5.38" | 8.88" | 170 | 304 Stainless Steel | 1/8 | __ | NPT | Female | 5144K163 | 000000 |
Lg. | Air Inlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Type | Gender | Each | |
1 1/2" Bore Size (2.63" OD) | |||||||||
| 3 1/2" | 6.01" | 9.51" | 170 | 304 Stainless Steel | 1/8 | NPT | Female | 5036K163 | 0000000 |
Thin-Profile Flexible-Mount Nonrotating Air Cylinders
Mount these cylinders wherever you need them—cylinders have holes on each side and the front, add attachments (not included) to provide many mounting options. These cylinders also have a non-rotating oval piston that prevents twisting as the piston rod extends and retracts. Piston is magnetic, so you can use these cylinders with sensors (not included) to activate relays and controllers.

Lg. | Air Inlet | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Stroke | Retracted | Extended | Force @ 100 psi, lbs. | Body Material | Pipe Size | Thread Size | Thread Type | Gender | Each | |
1/2" Bore Size (0.6" Wd.) | ||||||||||
| 3 1/2" | 6.8" | 10.3" | 20 | Aluminum | __ | 10-32 | UNF | Female | 6861K703 | 0000000 |
11/16" Bore Size (0.6" Wd.) | ||||||||||
| 3 1/2" | 7" | 10.5" | 37 | Aluminum | __ | 10-32 | UNF | Female | 6861K121 | 000000 |
1" Bore Size (0.8" Wd.) | ||||||||||
| 3 1/2" | 7.2" | 10.7" | 79 | Aluminum | __ | 10-32 | UNF | Female | 6861K707 | 000000 |
1 1/4" Bore Size (0.9" Wd.) | ||||||||||
| 3 1/2" | 7.5" | 11" | 123 | Aluminum | 1/8 | __ | NPT | Female | 6861K711 | 000000 |
1 5/8" Bore Size (1.2" Wd.) | ||||||||||
| 3 1/2" | 7.7" | 11.2" | 207 | Aluminum | 1/8 | __ | NPT | Female | 6861K715 | 000000 |
2" Bore Size (1 1/2" Wd.) | ||||||||||
| 3 1/2" | 8.4" | 11.9" | 314 | Aluminum | 1/4 | __ | NPT | Female | 6861K719 | 000000 |

Inside Mounting Holes | Outside Mounting Holes | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Width | Height | Thickness | Number of | Diameter | Center-to-Center | Mounting Hardware Included | Number of | Diameter | Center-to-Center | Mounting Hardware Included | Material | Includes | Each | |
| 1/2" | 0.6" | 3.5" | 0.3" | 4 | 0.134" | 0.787" | Yes | 2 | 0.18" | 3" | No | Aluminum | Two Screws | 6861K41 | 000000 |
| 11/16" | 0.6" | 3.7" | 0.3" | 4 | 0.177" | 0.709" | Yes | 2 | 0.18" | 3.1" | No | Aluminum | Two Screws | 6861K42 | 00000 |
| 1" | 0.8" | 4.4" | 0.4" | 2 | 0.19" | 0.984" | Yes | 2 | 0.22" | 3.9" | No | Aluminum | Two Screws | 6861K43 | 00000 |
| 1 1/4" | 0.9" | 5.1" | 0.4" | 2 | 0.25" | 1.26" | Yes | 2 | 0.26" | 4.5" | No | Aluminum | Two Screws | 6861K44 | 00000 |
| 1 5/8" | 1.2" | 5.7" | 0.4" | 2 | 0.25" | 1.575" | Yes | 2 | 0.26" | 5.2" | No | Aluminum | Two Screws | 6861K45 | 00000 |
| 2" | 1.5" | 6.2" | 0.5" | 2 | 0.313" | 1.969" | Yes | 4 | 0.35" | 5.5" | No | Aluminum | Four Screws | 6861K46 | 00000 |

Mounting Holes | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Bore Size | Pin Hole Diameter | Width | Height | Depth | Base Plate Thickness | Number of | Diameter | Center-to-Center | Mounting Hardware Included | Material | Includes | Each | |
| 1/2" | 0.31" | 0.6" | 1" | 0.9" | 0.1" | 2 | 0.122" | 0.841" | Yes | Steel | Two Screws | 6861K51 | 000000 |
| 11/16" | 0.31" | 0.6" | 1" | 1" | 0.1" | 2 | 0.177" | 0.792" | Yes | Steel | Two Screws | 6861K52 | 00000 |
| 1" | 0.31" | 0.4" | 1.5" | 0.9" | 0.3" | 2 | 0.22" | 0.98" | Yes | Steel | Two Screws | 6861K53 | 00000 |
| 1 1/4" | 0.39" | 0.4" | 1.7" | 1" | 0.4" | 2 | 0.27" | 1.26" | Yes | Steel | Two Screws | 6861K54 | 00000 |
| 1 5/8" | 0.47" | 0.4" | 2" | 1.2" | 0.3" | 2 | 0.27" | 1.58" | Yes | Steel | Two Screws | 6861K55 | 00000 |
| 2" | 0.47" | 0.8" | 2.6" | 1.3" | 0.4" | 2 | 0.35" | 1.97" | Yes | Steel | Two Screws | 6861K56 | 00000 |
| For Bore Size | DC Voltage | Each | |
| 1/2", 11/16", 1", 1 1/4", 1 5/8", 2", 2 1/2" | 12V DC- 30V DC | 6861K64 | 000000 |

































