Airtac SED Double Rod Cylinder SED50X275
The AirTAC SED Double Rod Cylinder SED50X275 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø50mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 275mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke275 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SED Double Rod Cylinder SED50X275
The AirTAC SED50X275 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 275mm stroke. Because a 20mm rod exits both ends, the effective piston area is identical on extend and retract, yielding a perfectly symmetrical 825N of force each way at 0.5MPa. The extruded aluminum barrel integrates sensor grooves, though this specific SKU lacks the -S magnet option, meaning it ships without position sensing out of the box.
Beyond equal bidirectional thrust, the through-rod design provides superior anti-rotation guidance and allows a rear-mounted cam or secondary tooling to operate a second mechanism in tandem. Field-adjustable air cushions at both ends (30mm cushion length) manage end-of-stroke deceleration, while the PT1/4 porting and M16x1.5 rod-end threads ensure straightforward integration into existing ISO 15552 footprints.
Airtac SED Double Rod Cylinder SED50X275 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X275 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C (0–150 °C with FKM seals) |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SED datasheet and ISO 15552 / VDMA 24562 dimensions. Confirm against the product label before installation. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 kgf |
Because a rod exits both ends, the effective piston area — and therefore the force — is identical on extend and retract. Actual usable force is lower than theoretical; size with a safety margin.
Model Code: Airtac SED Double Rod Cylinder SED50X275
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×275 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting (SED): Basic, LB, FA, TC, FTC, TCM1, TCM2. Related: SE (single rod), SEJ (double-rod adjustable stroke), BSED (double-rod rod lock).
Where the Airtac SED Double Rod Cylinder SED50X275 Is Used
Web Guide Steering
Uses the 825N equal both-way thrust to precisely nudge film or paper webs, relying on the twin rods to prevent binding during high-speed 275mm corrections.
Dual-Station Transfer
Drives a part forward to station A while simultaneously pushing a completed part backward to station B, maximizing the 1154N available at 0.7MPa.
Lapping Head Actuator
Mounts an abrasive head on the front rod and a counterweight or sensor flag on the rear rod, utilizing the anti-rotation properties for flat lapping machines.
Is the Airtac SED Double Rod Cylinder SED50X275 the Right Cylinder?
When sizing this 50mm bore, note the adjacent options: stepping down to the 40mm bore drops your both-way force to 528N at 0.5MPa, while stepping up to the 63mm bore increases it to 1402N. Choose this SED50X275 over a single-rod SE when your application requires high resistance to side-load twisting, dual-end actuation, or a rear-rod mounted flag. Because the 275mm stroke exceeds 300mm thresholds in rigid mounting, ensure external guide rails are used to prevent rod binding under heavy lateral loads.
Remember that a standard SED does not hold position on air loss; the piston will drift. The adjustable air cushion only decelerates near stroke end and is not a mechanical lock. For fail-safe holding, pair this cylinder with an external pilot-operated check valve or select a BSED double-rod rod-lock variant. Replacement matching requires a 50mm bore, 275mm stroke, PT1/4 ports, and a Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting interface.
Quick checklist
- ✓ Equal force/speed both directions needed?
- ✓ Back-rod space for tooling or a flag
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Support both rod ends; avoid side load.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SED Double Rod Cylinder SED50X275 FAQ
The SED50X275 provides equal force in both directions because of its double-rod design. It outputs 825N at 0.5MPa, 1154N at 0.7MPa, and a maximum of 168kgf at 1.0MPa.
The double-rod design ensures the effective piston area is identical on both sides, providing equal extend and retract speeds and forces. It also offers superior anti-rotation resistance and allows tooling or sensors to be mounted on the rear rod end.
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