Airtac SED Double Rod Cylinder SED50BX350S
The AirTAC Airtac SED Double Rod Cylinder SED50BX350S is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø50mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 350mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke350 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SED Double Rod Cylinder SED50BX350S
The AirTAC SED50BX350S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 350mm stroke. Because a rod exits both end covers, the annular piston area is identical on extend and retract. This yields exactly 825 N of output force at 0.5 MPa in both directions. The extruded aluminum barrel omits external tie rods, ensuring a clean, dimensionally interchangeable ISO 15552 footprint.
Equipped with a SUS304 stainless steel rod (code B), this variant is built for corrosion resistance and washdown environments. The integrated -S magnet enables position detection via CMSE reed or DMSE electronic sensors. Adjustable air cushions at both ends manage deceleration near stroke limits, while the rear rod extension allows mounting a secondary cam or limit flag to drive a second mechanism.
Airtac SED Double Rod Cylinder SED50BX350S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50BX350S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 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 SED50BX350S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×350 | 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 SED50BX350S Is Used
PCB Edge Deburring
Drives a deburring blade with 825 N of equal force on both strokes. The SUS304 rod withstands chemical coolants, while the twin rods prevent blade rotation during precision PCB edge routing.
Packaging Lane Diverters
Shifts cartons between conveyor lanes using the same 825 N force extending and retracting. The rear rod end mounts a cam to trigger a pneumatic diverter gate downstream.
Synchronized Gripper Jaws
Powers opposing gripper jaws that open and close with identical 1154 N force at 0.7 MPa. The double-rod architecture ensures perfectly synchronized jaw travel for delicate part handling.
Is the Airtac SED Double Rod Cylinder SED50BX350S the Right Cylinder?
Select this 50mm bore when you need 825 N of equal both-way force at 0.5 MPa. If your payload is lighter, step down to the 40mm bore delivering 528 N both ways. For heavier drives requiring more thrust, step up to the 63mm bore providing 1402 N. The SUS304 rod makes it ideal for food or chemical washdowns. The twin-rod design provides superior anti-rotation guidance and dual-side load support compared to a single-rod SE cylinder.
At 350mm stroke, the extended rod length increases side-load leverage; always use external linear guides to prevent binding and premature seal wear. To replace an existing ISO 15552 unit, match the 50mm bore, 350mm stroke, PT1/4 port, and mounting style (available options include Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that a plain SED does not hold position on air loss; the piston drifts. For fail-safe holding, use a BSED double-rod rod lock or an external pilot-operated 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 SED50BX350S FAQ
The double-rod design provides equal force in both directions. It delivers 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
A double-rod cylinder provides equal extend and retract forces, better load guidance against rotation, and a rear rod end that can mount a sensor flag or drive a secondary mechanism. It is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
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