Airtac SED Double Rod Cylinder SED50X250
The AirTAC Airtac SED Double Rod Cylinder SED50X250 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 250mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke250 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 SED50X250
The AirTAC SED50X250 is a double-acting, double-rod profile cylinder fully dimensionally interchangeable per ISO 15552 / VDMA 24562. Because a rod exits both ends, the annular piston area is identical on extend and retract. This yields exactly 825 N of output force in both directions at 0.5 MPa, eliminating the push-pull disparity found in single-rod units.
This 50mm bore unit features a Ø20mm rod with an M16x1.5 thread, a PT1/4 port, and field-adjustable air cushions at both ends to manage deceleration over its 250mm stroke. Note that this specific SKU lacks a magnet, meaning it is not equipped for CMSE or DMSE position sensing without modification. The rear rod extension can be used to drive a secondary mechanism or mount a physical flag.
Airtac SED Double Rod Cylinder SED50X250 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X250 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SED50X250
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SED50X250 Is Used
Web Guiding Mechanism
Uses the 825N equal both-way force to tension and steer material rolls, leveraging the rear rod for a cam while resisting rotational twist.
Dual-Side Transfer Pusher
Drives a synchronized transfer arm on a packaging line, using the double-rod output to push and retract loads at identical speeds.
Component Sealing Press
Applies 1154N at 0.7MPa to seat bearings, with the twin rods preventing platen skew during the 250mm extend and retract cycles.
Is the Airtac SED Double Rod Cylinder SED50X250 the Right Cylinder?
Choose this 50mm bore when you need 825 N both ways at 0.5 MPa (1154 N at 0.7 MPa). If your load is lighter, step down to the 40mm bore providing 528 N both ways; if heavier, step up to the 63mm bore delivering 1402 N both ways. The twin-rod design is preferred over a single-rod SE when the application demands high resistance to side-load rotation or requires mounting a cam on the rear rod end. For this 250mm stroke, ensure external guide rails support the load to prevent rod binding, as the air cushion only decelerates near stroke end and does not hold position on air loss. To replace any ISO 15552 cylinder, match the 50mm bore, 250mm stroke, PT1/4 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SED50X250 FAQ
The SED50X250 provides equal force in both directions due to its double-rod design. It outputs 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and reaches a maximum of 168 kgf at 1.0 MPa.
Yes, as an ISO 15552 profile cylinder, it offers direct dimensional interchangeability for other ISO 15552 double-rod cylinders. Just match the 50mm bore, 250mm stroke, PT1/4 port, and your required mounting from the supported set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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