Airtac SED Double Rod Cylinder SED50X20S
The AirTAC SED Double Rod Cylinder SED50X20S 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 20mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke20 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 SED50X20S
The AirTAC SED50X20S is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a rod exits both ends, the annulus area is identical on extend and retract, yielding an equal force of 825 N each way at 0.5 MPa. The extruded aluminum barrel eliminates external tie rods for a clean, compact footprint.
This 50 mm bore, 20 mm stroke unit includes a standard magnet (-S) for position sensing via CMSE reed or DMSE electronic switches. The Ø20 mm rod features an M16x1.5 thread, and field-adjustable air cushions at both ends protect your machinery at stroke completion.
Airtac SED Double Rod Cylinder SED50X20S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X20S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 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 SED50X20S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | 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 SED50X20S Is Used
Pick-and-Place Grippers
Drives synchronized gripper jaws with equal 825 N force in both directions, utilizing the short 20 mm stroke for rapid part transfer between robotic machining centers.
PCB Edge Guide Alignment
Uses the twin-rod anti-rotation特性 to square electronic panels on conveyor lines, ensuring the rear rod maintains perfect parallelism without mechanical twist.
Dual-Side Film Sealing
Powers a sealing jaw from the front while the rear rod simultaneously triggers a DMSE electronic sensor flag, coordinating packaging cycles with 1154 N at 0.7 MPa.
Is the Airtac SED Double Rod Cylinder SED50X20S the Right Cylinder?
Choose this 50 mm bore when you need 825 N of bidirectional force at 0.5 MPa. If your application requires less push, step down to the 40 mm bore (528 N both ways); if you need more power, step up to the 63 mm bore (1402 N both ways). The twin-rod design provides superior anti-rotation stability and allows driving a secondary mechanism from the rear rod end.
For ISO 15552 direct replacements, match the 50 mm bore, 20 mm stroke, PT1/4 port, and preferred mounting (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SED does not hold position on air loss; the piston drifts. For fail-safe holding, use an external rod lock or the BSED double-rod rod-lock series.
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 SED50X20S FAQ
The SED50X20S provides equal force in both directions because of the double-rod design. It outputs 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and reaches a maximum of 168 kgf at 1.0 MPa.
A double-rod cylinder provides identical extend and retract forces, better load stability against rotation, and allows a rear rod end to drive a secondary mechanism or sensor flag. It drops directly into standard ISO 15552 mounting interfaces without requiring external tie rods.
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