Airtac SED Double Rod Cylinder SED50X450
The AirTAC Airtac SED Double Rod Cylinder SED50X450 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 450mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke450 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 SED50X450
The AirTAC SED50X450 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 450mm stroke. Because a 20mm rod exits both end covers, the effective piston area is identical on extend and retract. This yields perfectly symmetrical force, delivering 825 N each way at 0.5 MPa. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile that drops in dimensionally for any ISO 15552 footprint.
This specific SKU lacks the -S magnet option, meaning it has no onboard position sensing. However, the rear rod extension is fully exposed to mount a cam, external flag, or secondary tooling. Field-adjustable air cushions at both ends (30mm cushion length) allow you to tune deceleration for the 450mm travel. Note that the twin rods add overall length; you must leave clearance behind the rear cover for the protruding rod.
Airtac SED Double Rod Cylinder SED50X450 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X450 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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 SED50X450
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×450 | 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 SED50X450 Is Used
Web Guiding Mechanism
Uses the 825N equal both-way force to push and pull a film web guide evenly, preventing asymmetric tension during 450mm corrections.
Shuttle Transfer Unit
Mounts a gripper on the front rod and a counterweight or cam on the rear rod to smoothly transfer parts between two stations.
Equal-Force Press
Applies 1154N at 0.7 MPa in both directions to seat and unseat components with identical pressure, leveraging anti-rotation stability.
Is the Airtac SED Double Rod Cylinder SED50X450 the Right Cylinder?
Selecting this 50mm bore provides 825 N of force both ways at 0.5 MPa. If your payload is lighter, the neighboring 40mm bore provides 528 N both ways. If you need more thrust, step up to the 63mm bore for 1402 N. The double-rod design is chosen over a single-rod SE when you need anti-rotation stability, a rear rod to drive a second mechanism, or perfectly balanced push/pull dynamics. At 450mm stroke, the extended rod length increases leverage on the bearings; you should use external guides to handle side loads and prevent premature wear. Remember that an SED does not hold position on air loss—the piston drifts. For fail-safe holding, use a BSED double-rod lock or an external pilot-operated check valve. When replacing an ISO 15552 unit, match the 50mm bore, 450mm stroke, PT1/4 port, and your required mounting from the Basic, FA, LB, TC, FTC, TCM1, or TCM2 set (this series omits FB, CA, CB, and CR).
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 SED50X450 FAQ
Because the double-rod design subtracts the 20mm rod area from both sides, force is equal in both directions: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
No, a standard SED cylinder will drift on air loss. The adjustable air cushion only decelerates the piston near the stroke ends; it is not a brake. For fail-safe position holding, consider a BSED double-rod lock cylinder.
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