Airtac SED Double Rod Cylinder SED40X900
The AirTAC Airtac SED Double Rod Cylinder SED40X900 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 SED40X900
The AirTAC SED40X900 is a double-acting, double-rod profile cylinder adhering to the ISO 15552 dimensional interface. Because a 16mm rod exits both end covers, the effective piston area is identical in both directions, yielding an equal 528N of drive force each way at 0.5 MPa. The extruded aluminum barrel contains integrated sensor grooves, though this specific SKU omits the magnet, precluding reed or electronic position sensing.
Equipped with field-adjustable air cushioning at both ends (30mm cushion length), this unit decelerates the load near stroke extremes but does not hold position on air loss. The twin-rod architecture significantly improves load guidance against rotation compared to a single-rod SE cylinder, and the rear rod extension can be used to mount a cam or secondary mechanism.
Airtac SED Double Rod Cylinder SED40X900 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X900 |
|---|---|
| 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 SED40X900
| 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 SED40X900 Is Used
Long-Stroke Transfer
Drives a 900mm packaging conveyor shuttle, using the 528N equal both-way force to push and pull cartons without asymmetric speed shifts.
Web Edge Guiding
Utilizes the twin-rod anti-rotation properties to steer a wide material web evenly across a 900mm span, keeping the guiding frame perfectly parallel.
Dual-Side Actuation
Powers a clamping mechanism from the front rod while the rear rod simultaneously triggers a remote limit valve at the opposite end of the machine.
Is the Airtac SED Double Rod Cylinder SED40X900 the Right Cylinder?
Stepping down to the 32mm bore drops the equal both-way force to 345N at 0.5 MPa, while moving up to the 50mm bore increases it to 825N. For a 900mm stroke, the extended rod length demands careful external guide support to prevent excessive side loading on the rod seals. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR styles). If fail-safe position holding is required, a standard SED will drift under pressure loss; consider the BSED double-rod rod-lock cylinder or an external pilot-operated check valve instead.
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 SED40X900 FAQ
Because the double-rod design subtracts the rod area on both sides, force is equal in both directions: 528N at 0.5 MPa, 739N at 0.7 MPa, and a maximum of 108 kgf at 1.0 MPa.
Yes. The SED is a profile cylinder dimensionally interchangeable per ISO 15552, but it uses an extruded aluminum barrel without external tie rods. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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