Airtac SED Double Rod Cylinder SED40X55S
The AirTAC Airtac SED Double Rod Cylinder SED40X55S is a genuine double-acting ISO 15552 double-rod cylinder: a Ø16mm piston rod exits BOTH ends of the Ø40mm 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.
- BoreØ40 mm
- Stroke55 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM12×1.25
- 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 SED40X55S
The AirTAC SED40X55S is a double-acting, double-rod ISO 15552 profile cylinder with a 40mm bore and 55mm stroke. Because a 16mm rod occupies both piston sides, the annulus area is identical in both directions, yielding an equal force of 528N at 0.5MPa on extend and retract. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile that drops directly into existing ISO 15552 dimensional interfaces.
This unit includes the -S magnet option for position sensing, supporting both CMSE reed and DMSE electronic sensors in the integrated groove. The twin-rod design provides superior anti-rotation guidance and allows the rear rod end to drive a secondary mechanism or cam. Field-adjustable air cushions at both ends (30mm cushion length) allow precise deceleration near stroke extremes.
Airtac SED Double Rod Cylinder SED40X55S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X55S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 SED40X55S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 40 | 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 SED40X55S Is Used
PCB Panel Clamping
Clamps printed circuit boards during assembly. The 528N equal both-way force ensures stable holding without shifting, while the twin 16mm rods prevent jaw rotation.
Textile Web Guide
Guides fabric webs in textile machinery. The rear rod end mounts a cam for tension feedback, and the -S magnet triggers DMSE sensors for edge tracking.
Pick-and-Place Transfer
Drives a synchronized pick-and-place transfer carriage. The equal extend and retract speeds balance the cycle, and the ISO 15552 footprint eases integration.
Is the Airtac SED Double Rod Cylinder SED40X55S the Right Cylinder?
Select the 40mm bore when your application requires the exact 528N both-way output at 0.5MPa. If you need less force, the neighboring 32mm bore provides 345N; if you need more, the 50mm bore provides 825N. Choose this double-rod SED over a single-rod SE when the load demands twin-side guidance to prevent rotation, or when you need to mount a rear cam and sensor flag. Remember that a plain SED does not hold position on air loss—the piston drifts, and the adjustable cushion only decelerates near stroke end, acting as a brake rather than a lock. For fail-safe holding, consider an external pilot-operated check valve or the BSED double-rod lock variant. To replace an existing ISO 15552 cylinder, match the 55mm stroke, PT1/4 port, and mounting subset (Basic, FA, LB, TC, FTC, TCM1, 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 SED40X55S FAQ
Because the double-rod design has the same annulus area on both sides, the force is identical in both directions: 528N at 0.5MPa, 739N at 0.7MPa, and a maximum of 108kgf at 1.0MPa.
The twin rods exiting both ends provide superior anti-rotation guidance for the load and allow you to mount tooling, cams, or sensor flags on the rear rod. It also ensures the force and speed are perfectly equal in both directions.
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