Airtac SED Double Rod Cylinder SED50X425S
The AirTAC SED Double Rod Cylinder SED50X425S 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 425mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke425 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 SED50X425S
The AirTAC SED50X425S is a double-acting, double-rod ISO 15552 profile cylinder. A 20mm rod exits both ends, yielding 825 N of force each way at 0.5 MPa. The -S option embeds a magnet for CMSE reed or DMSE electronic sensors.
Because the rear rod protrudes 425mm, you must leave ample clearance for rear tooling or cam flags. The extruded aluminum barrel omits external tie rods, and field-adjustable air cushions at both ends manage deceleration near stroke end.
Airtac SED Double Rod Cylinder SED50X425S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X425S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 425 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 SED50X425S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×425 | 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 SED50X425S Is Used
Web Edge Guiding
Yields 1154 N of equal bidirectional force at 0.7 MPa to steer material webs via a rear-rod cam, preventing rotational drift during travel.
Dual-Side Pusher
Drives opposing pusher fingers simultaneously from both rod ends, moving 825 N of product at 0.5 MPa without adding a second cylinder.
Transfer Shuttle
Synchronizes a part transfer between two stations using the twin 20mm rods, maintaining 168 kgf max hold stability across the 425mm stroke.
Is the Airtac SED Double Rod Cylinder SED50X425S the Right Cylinder?
Step down to the SED40 (528 N both ways at 0.5 MPa) for lighter duties, or up to the SED63 (1402 N) if your load exceeds 1154 N at 0.7 MPa. Choose this double-rod profile over a single-rod SE when you need to mount a rear cam, drive dual mechanisms, or guide against rotation.
At 425mm of stroke, the twin 20mm rods demand external load guides to prevent side-load binding. Note that a plain SED drifts on air loss; the cushions only decelerate, they do not hold position. For fail-safe holding, use a BSED or external lock. ISO 15552 mounting interfaces include Basic, FA, LB, TC, FTC, TCM1, and 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 SED50X425S FAQ
It delivers 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa. Because it is a double-rod cylinder, this force is identical in both extend and retract directions.
The twin rods exit both ends, allowing you to mount rear tooling, sensors, or a second mechanism. It also provides superior anti-rotation guidance and ensures the effective piston area, and thus force, is perfectly equal both ways.
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