Airtac SED Double Rod Cylinder SED50X900
The AirTAC Airtac SED Double Rod Cylinder SED50X900 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 900mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke900 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM16×1.5
- 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 SED50X900
The AirTAC SED50X900 is a double-acting, double-rod profile cylinder adhering to the ISO 15552 / VDMA 24562 dimensional standard. Because a 20mm rod exits both end covers, the effective piston area is identical on extend and retract. This yields an equal 825N of thrust in both directions at 0.5MPa, avoiding the force imbalance found in single-rod units.
This 900mm stroke unit features an extruded aluminum barrel without external tie rods. It includes field-adjustable air cushioning at both ends to decelerate the load near stroke limits. Note that this specific SKU lacks the -S magnet option, meaning it cannot support CMSE reed or DMSE electronic position sensors without modification.
Airtac SED Double Rod Cylinder SED50X900 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X900 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 900 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 SED50X900
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | 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 SED50X900 Is Used
Web Guiding Mechanism
Delivers 825N of equal force both ways to steer material webs, using the twin rods to prevent rotational drift across the 900mm stroke.
Dual-Station Transfer
Uses the rear rod end to push a secondary conveyor diverter while the front rod advances the primary product, synchronizing both actions at 825N.
Long-Stroke Testing Rig
Applies perfectly balanced 1154N tension and compression cycles at 0.7MPa to test component fatigue, relying on the anti-rotation properties of the dual rods.
Is the Airtac SED Double Rod Cylinder SED50X900 the Right Cylinder?
Selecting this 50mm bore provides 825N of equal bidirectional force at 0.5MPa. If your application requires less force, the adjacent 40mm bore generates 528N both ways. If you need more power, stepping up to the 63mm bore yields 1402N both ways at 0.5MPa.
The twin-rod architecture is essential here: the 900mm stroke creates a long extension, but dual rods provide superior anti-rotation guidance and allow the rear rod end to drive a secondary mechanism or cam. Because this stroke exceeds 300mm, you must use external linear guides to manage side loads and prevent binding. Remember that the adjustable air cushion only decelerates the piston near the end of travel; it does not hold position on air loss. For fail-safe holding, consider a BSED double-rod lock cylinder or an external pilot-operated check valve. This cylinder uses a PT1/4 port and M16x1.5 rod thread.
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 SED50X900 FAQ
The SED50X900 provides equal force in both directions because the 20mm rod occupies both sides of the piston. It generates 825N at 0.5MPa, 1154N at 0.7MPa, and a maximum of 168kgf at 1.0MPa.
Yes, it shares the exact ISO 15552 / VDMA 24562 mounting interface and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Just ensure you leave rear-rod clearance, as a rod protrudes from both ends, making the overall length longer than a single-rod SE cylinder.
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