Airtac SED Double Rod Cylinder SED40X900S
The AirTAC Airtac SED Double Rod Cylinder SED40X900S 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 900mm, PT1/4 ports, adjustable cushioning.
- BoreØ40 mm
- Stroke900 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SED Double Rod Cylinder SED40X900S
The AirTAC SED40X900S is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a 16 mm rod occupies both piston sides, the annulus area is identical in each direction, yielding an equal extend and retract force of 528 N at 0.5 MPa. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile that drops in for any ISO 15552 double-rod replacement.
Equipped with a standard magnet (-S), this unit supports CMSE reed and DMSE electronic sensors for end-of-stroke signaling. Field-adjustable air cushions at both ends provide tunable deceleration over the 30 mm cushion length, protecting your mechanism across the long 900 mm travel.
Airtac SED Double Rod Cylinder SED40X900S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X900S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 SED40X900S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 40 | Bore size in mm. |
| ×900 | 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 SED40X900S Is Used
Long-Travel Diverters
Drives a 900 mm conveyor sorting gate. The equal 528 N both-way force ensures positive gate closure and retraction, while the rear rod provides stable anti-rotation guidance over the long stroke.
Web Tensioning Frames
Regulates tension on moving film or foil webs. The twin-rod architecture resists uneven side loads, and the -S magnet feeds DMSE electronic sensors to confirm material roll positioning.
Dual-Side Clamp Presses
Actuates a clamping fixture from both ends simultaneously. The symmetrical 739 N force at 0.7 MPa provides balanced clamping without differential pressure shifting the workpiece.
Is the Airtac SED Double Rod Cylinder SED40X900S the Right Cylinder?
Stepping the bore down to 32 mm drops the both-way output to 345 N at 0.5 MPa, while moving up to 50 mm raises it to 825 N. Choose this 40 mm bore when your application requires roughly 528 N of equal push/pull force. A double-rod design is preferred over a single-rod SE when you need anti-rotation guidance, a rear-rod cam for secondary actuation, or mounting space for dual-side sensors. At 900 mm of stroke, the extended rod length amplifies side-loading leverage; you must support the load with external guides to prevent binding and premature seal wear.
For position holding upon air loss, note that a plain SED cylinder will drift; the adjustable air cushion only decelerates near stroke end and does not lock the piston. For fail-safe holding, specify a BSED double-rod rod lock or an external pilot-operated check valve. When matching ISO 15552 replacements, verify the 40 mm bore, 900 mm stroke, PT1/4 port, and your required mounting (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 SED40X900S FAQ
Because the double-rod design subtracts rod area from both sides, force is identical in extend and retract. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and a maximum of 108 kgf at 1.0 MPa.
Yes. The SED40X900S is dimensionally interchangeable per ISO 15552 and VDMA 24562 profile standards. Just match the 40 mm bore, 900 mm stroke, PT1/4 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2) for a direct drop-in replacement.
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