Airtac SED Double Rod Cylinder SED40X950
The AirTAC Airtac SED Double Rod Cylinder SED40X950 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 950mm, PT1/4 ports, adjustable cushioning.
- BoreØ40 mm
- Stroke950 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SED Double Rod Cylinder SED40X950
The AirTAC SED40X950 is a double-acting, double-rod profile cylinder built to the ISO 15552 interface. A single piston drives a 16 mm rod out of both end covers, yielding perfectly symmetrical thrust. Because the annular area is identical on both sides, you get exactly 528 N of force in both directions at 0.5 MPa.
This unit carries a PT1/4 port and an M12x1.25 rod thread. The rear rod extension is highly useful for mounting a cam or secondary tool. It features field-adjustable air cushioning at 30 mm length on both ends, though this SKU lacks the magnet for position sensing.
Airtac SED Double Rod Cylinder SED40X950 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X950 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 950 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 SED40X950
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SED40X950 Is Used
Servo-Driven Gantry
Drives a 950 mm transfer carriage with 528 N of equal both-way force, ensuring stable acceleration without torsional twist.
Glass Edge Sealing
Uses the rear rod to carry a secondary tracking roller, maintaining perfectly parallel pressure during 40 mm bore sealing passes.
Reciprocating Sorter
Pushes and retracts components at 30-800 mm/s, relying on the twin-rod anti-rotation stability to prevent jamming in the diverter.
Is the Airtac SED Double Rod Cylinder SED40X950 the Right Cylinder?
Stepping up or down? The adjacent SED50 hits 825 N both ways at 0.5 MPa, while the smaller SED32 provides 345 N. Choose this 40 mm bore when your application requires moderate equal push-pull thrust and rear-rod clearance. Unlike a single-rod SE cylinder, the twin-rod design resists torsion and guides loads against rotation.
At 950 mm stroke, the extended rod length demands external guide rails to prevent sagging and side-load damage. Remember that a plain SED does not hold position on air loss—the piston drifts, and the cushion only decelerates near stroke end. For fail-safe holding, use a BSED rod lock or external 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 SED40X950 FAQ
Because the rod occupies both sides of the piston, thrust is identical in both directions. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and a maximum of 108 kgf at 1.0 MPa.
Yes. The SED40X950 is dimensionally interchangeable per ISO 15552. Just ensure you have rear-rod clearance, as a rod protrudes from both ends, and note it uses a PT1/4 port.
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