Airtac SED Double Rod Cylinder SED63X250
The AirTAC Airtac SED Double Rod Cylinder SED63X250 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø63mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 250mm, PT3/8 ports, adjustable cushioning.
- BoreØ63 mm
- Stroke250 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 36 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 SED63X250
The AirTAC SED63X250 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 63mm bore and 250mm stroke. Because a 20mm rod exits both end covers, the annulus area is identical on extend and retract, yielding equal force in both directions—1402 N at 0.5 MPa and 1962 N at 0.7 MPa. The extruded aluminum barrel includes sensor grooves, though this specific SKU lacks the -S magnet option for position sensing. Adjustable air cushions at both ends provide 36mm of deceleration travel.
This through-rod design extends overall length beyond a standard single-rod SE cylinder, requiring rear-rod clearance in your machine layout. The rear rod end can drive a secondary mechanism or mount a cam, while the twin-rod geometry offers superior anti-rotation guidance compared to a single rod. It uses a PT3/8 port and M16x1.5 rod-end thread.
Airtac SED Double Rod Cylinder SED63X250 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED63X250 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 250 mm |
| Configuration | Double rod, double acting |
| Port size | PT3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 1402 N |
| 0.7 MPa | 1962 N |
| Max (@1.0 MPa) | 286 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 SED63X250
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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 SED63X250 Is Used
Pallet Transfer Station
Drives a 250mm stroke transfer carriage for heavy pallets. The twin rods prevent chassis twist under asymmetric loads, maintaining precise alignment.
CNC Lathe Bar Feeder
Pushes bar stock into a collet with 1402 N of force. The rear protruding rod can mount a mechanical flag to confirm feed completion externally.
Press Brake Tooling
Actuates a 250mm alignment gate for sheet metal bending. Equal both-way force ensures the gate retracts smoothly without dropping the workpiece.
Is the Airtac SED Double Rod Cylinder SED63X250 the Right Cylinder?
When sizing this 63mm bore, consider the neighbors: stepping down to a 50mm bore yields 825 N both ways at 0.5 MPa, while stepping up to an 80mm bore provides 2268 N at 0.5 MPa. Choose the SED63X250 over a single-rod SE when your application demands equal push/pull forces, resistance to torsional side loads, or a rear-rod output for a secondary mechanism. At 250mm stroke, external guide rails are recommended to prevent binding and protect the 20mm rods from bending moments.
As a true ISO 15552 cylinder, it drops in dimensionally for any standard double-rod footprint using the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting set (omitting FB, CA, CB, CR). Note that a plain SED does not hold position on air loss; the piston drifts. The adjustable cushion decelerates near stroke end but is not a lock. For fail-safe holding, specify 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 SED63X250 FAQ
Because the double-rod design subtracts rod area from both sides, force is equal in both directions. It outputs 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and reaches a maximum of 286 kgf at 1.0 MPa.
The SED63X250 provides equal extend and retract forces, better load guidance against rotation, and a rear rod end for mounting external cams or flags. It is dimensionally interchangeable per ISO 15552 and operates at speeds of 30-800 mm/s.
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