Airtac SED Double Rod Cylinder SED50X55
The AirTAC SED Double Rod Cylinder SED50X55 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 55mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke55 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 SED50X55
The AirTAC SED50X55 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 55mm stroke. Because a 20mm rod exits both end covers, the effective piston area is identical on extend and retract, yielding equal force of 825 N each way at 0.5 MPa. The extruded aluminum barrel has no external tie rods, ensuring a clean profile that drops in dimensionally for any ISO 15552 footprint.
This unit lacks a standard magnet (-S), so it does not support CMSE or DMSE position sensors out of the box. The rear rod extension is ideal for mounting a mechanical cam or driving a secondary mechanism, while the twin rods provide superior anti-rotation guidance compared to a single-rod SE cylinder.
Airtac SED Double Rod Cylinder SED50X55 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X55 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 SED50X55
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SED50X55 Is Used
Film Slitter Edge Guide
Utilizes the 825N equal both-way force to precisely position a paper film slitter knife, leveraging the twin 20mm rods to prevent blade rotation during rapid 55mm shifts.
Package Flap Tucker
Drives a carton sealing flap tucker from both ends, using the symmetrical speed to push and pull a folding blade at 30-800 mm/s without stroke imbalance.
Pneumatic Divert Gate
Powers a conveyor lane diverter gate where the rear rod simultaneously operates a mechanical limit flag, saving space without needing an internal magnet.
Is the Airtac SED Double Rod Cylinder SED50X55 the Right Cylinder?
At 0.5 MPa, this 50mm bore generates 825 N of force in both directions. If your application requires less force, step down to the 40mm bore providing 528 N both ways; if you need more power, step up to the 63mm bore delivering 1402 N both ways. The 55mm stroke is short and compact, keeping overall length manageable, though you must still account for rear-rod protrusion clearance.
To replace an ISO 15552 cylinder, match the 50mm bore, 55mm stroke, PT1/4 port, and preferred mounting (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SED does not hold position on air loss—the piston drifts, and the adjustable air cushion only decelerates near stroke end, acting as a brake. For fail-safe holding, consider a BSED rod-lock cylinder or an external pilot-operated check valve.
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 SED50X55 FAQ
Because the double-rod design has equal annular piston areas on both sides, the force is identical in both directions: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
No, a standard SED cylinder will drift on loss of air pressure. The adjustable air cushion at both ends only decelerates the piston near the stroke ends; it is not a locking mechanism. For fail-safe holding, use a BSED double-rod lock cylinder or an external rod lock.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SED Cylinders
Request a Quote for Airtac SED Double Rod Cylinder SED50X55
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.