Airtac SED Double Rod Cylinder SED40X55
The AirTAC Airtac SED Double Rod Cylinder SED40X55 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 SED40X55
The AirTAC SED40X55 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a 16mm rod exits both end covers, the annulus area is identical on both sides. This means you get exactly 528 N of output force at 0.5 MPa in both extend and retract directions. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile that drops in for any standard ISO 15552 footprint.
This 40mm bore unit travels a short 55mm stroke and features adjustable air cushioning at both ends to decelerate the piston near stroke limits. This specific SKU is configured without a magnet, so it does not support CMSE or DMSE position sensing. The rear rod protrusion is highly useful for mounting a secondary cam, driving a second mechanism, or providing superior anti-rotation guidance for your payload.
Airtac SED Double Rod Cylinder SED40X55 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED40X55 |
|---|---|
| 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 SED40X55
| 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 SED40X55 Is Used
PCB Edge Guiding
Uses the equal 528 N force both ways to clamp and center electronic boards on a conveyor without skewing, leveraging the twin-rod anti-rotation properties.
Dual-Side Pick & Place
Drives a front gripper to pick parts while the rear rod simultaneously actuates a diverter cam, maximizing cycle efficiency within the 55mm stroke.
Light Assembly Press
Applies a consistent 739 N force at 0.7 MPa to seat small bearings or pins, using the through-rod design to maintain precise perpendicularity.
Is the Airtac SED Double Rod Cylinder SED40X55 the Right Cylinder?
Select this 40mm bore when an application demands equal 528 N force both ways and compact 55mm travel. If you need less force, the adjacent 32mm bore provides 345 N at 0.5 MPa. If your payload requires more push and pull, stepping up to the 63mm bore yields 1402 N at 0.5 MPa. Choose this double-rod SED over a single-rod SE when you need to mount rear tooling or prevent the load from twisting. Note that the adjustable air cushion only decelerates the piston near the end of stroke; it is not a locking device. If air pressure drops, the cylinder will drift. For fail-safe holding, use an external rod lock or a BSED series cylinder. To replace an existing unit, match the 55mm stroke, PT1/4 port, and your required mounting style (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 SED40X55 FAQ
Because the double-rod design subtracts the rod area from both sides, force is equal 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. It is a true ISO 15552 profile cylinder with no external tie rods. You can drop it in for any standard 40mm bore, 55mm stroke ISO cylinder. Just verify your mounting style (Basic, FA, LB, TC, FTC, TCM1, TCM2) and PT1/4 port.
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