Airtac SED Double Rod Cylinder SED50X325S
The AirTAC SED Double Rod Cylinder SED50X325S 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 325mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke325 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 SED50X325S
The AirTAC SED50X325S is a double-acting, double-rod ISO 15552 profile cylinder with a 50mm bore and 325mm stroke. Because a 20mm rod exits both ends, the annulus area is identical on extend and retract, yielding equal force of 825 N each way at 0.5 MPa. The integrated -S magnet enables position tracking via DMSE electronic or CMSE reed switches.
It features a field-adjustable air cushion at both ends to decelerate the load near stroke limits. Note that the twin-rod design increases overall length, so you must leave rear-rod clearance for the protruding 20mm diameter M16x1.5 thread.
Airtac SED Double Rod Cylinder SED50X325S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X325S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 325 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 SED50X325S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×325 | 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 SED50X325S Is Used
Transfer Pusher
Drives a dual-sided package pusher on a packaging conveyor, utilizing the 825N both-way force to extend and retract loads without stroke hesitation.
CNC Loader Arm
Actuates a rear-rod cam on a CNC lathe loader arm, using the twin rods to prevent binding during the 325mm travel into the spindle.
Web Edge Guide
Positions a web edge guide in a paper mill, leveraging the equal bidirectional force to maintain precise material tension without drift.
Is the Airtac SED Double Rod Cylinder SED50X325S the Right Cylinder?
At 325mm, this long stroke requires external load guidance to prevent side-loading from sagging rods or heavy tooling. Stepping down to the 40mm bore yields 528 N both ways at 0.5 MPa, while stepping up to the 63mm bore provides 1402 N. Choose this 50mm double-rod over a single-rod SE when you need superior anti-rotation guidance or need to drive a secondary mechanism from the rear rod. It is dimensionally interchangeable per ISO 15552 with a PT1/4 port. Remember, the air cushion only decelerates; it does not hold position on air loss. For fail-safe holding, use a BSED double-rod lock cylinder.
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 SED50X325S FAQ
Because the double-rod design has equal piston areas on both sides, it delivers 825 N of force both ways at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The twin rods provide superior anti-rotation guidance and allow the rear rod end to drive a secondary mechanism or sensor flag. It is a direct ISO 15552 direct replacement, but requires rear-rod clearance for the protruding shaft.
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