Airtac SED Double Rod Cylinder SED40X400
The AirTAC Airtac SED Double Rod Cylinder SED40X400 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 400mm, PT1/4 ports, adjustable cushioning.
- BoreØ40 mm
- Stroke400 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 SED40X400
The AirTAC SED40X400 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 400mm stroke. Because a 16mm rod exits both end covers, the effective piston area is identical on both sides. This yields perfectly equal force and speed in both directions, delivering 528N at 0.5 MPa on extend and retract alike.
This extruded aluminum cylinder omits external tie rods and includes field-adjustable air cushioning at both ends to decelerate loads near stroke limits. This specific SKU lacks the -S magnet option, meaning it does not support CMSE or DMSE position sensing without modification. The rear rod extension can drive a secondary mechanism or mount a cam, while providing superior anti-rotation guidance for the load.
Airtac SED Double Rod Cylinder SED40X400 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X400 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 SED40X400
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SED40X400 Is Used
Web Tension Control
Drives paper or film winders in printing presses. The equal 528N both-way force maintains constant tension without overcompensating, while the twin rod resists torsional load.
Shuttle Transfer Units
Moves parts between machining stations in CNC cells. The rear rod end mounts a physical cam to trip mechanical limit switches, eliminating the need for embedded cylinder sensors.
Pick-and-Place Grippers
Actuates dual-action gripper jaws in packaging lines. The through-rod design ensures the 400mm stroke moves symmetrically, keeping the 108kgf max load perfectly balanced.
Is the Airtac SED Double Rod Cylinder SED40X400 the Right Cylinder?
When sizing this 40mm bore, note the 32mm bore provides 345N at 0.5 MPa, while stepping up to the 63mm bore yields 1402N at 0.5 MPa. Choose this double-rod SED over a single-rod SE when your application demands equal push-pull forces, resistance to torsional rotation, or needs to mount tooling and sensors on the rear rod. At 400mm stroke, the extended rod length increases leverage; always use external linear guides to prevent side loads from damaging the rod seals.
Remember that a plain SED does not hold position on air loss—the piston drifts without pressure. The adjustable cushion only decelerates near stroke end and is not a locking brake. For fail-safe holding, consider a BSED double-rod rod lock cylinder. To replace an ISO 15552 unit, match the 40mm bore, 400mm stroke, PT1/4 port, and your required mounting from the available Basic, FA, LB, TC, FTC, TCM1, or TCM2 styles.
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 SED40X400 FAQ
Because the double-rod design subtracts the rod area from both sides, force is identical in both directions: 528N at 0.5 MPa, 739N at 0.7 MPa, and a maximum of 108kgf at 1.0 MPa.
Yes. It is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. Just match the 40mm bore, 400mm stroke, and mounting style.
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