Airtac SED Double Rod Cylinder SED50X85
The AirTAC SED Double Rod Cylinder SED50X85 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 85mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke85 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 SED50X85
The AirTAC SED50X85 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensions. Because a rod exits both ends, the annulus area is identical on extend and retract. It generates exactly 825 N of force in both directions at 0.5 MPa.
This 50mm bore unit features a PT1/4 port, a 20mm rod, and adjustable air cushions at both ends. The rear rod extension is perfect for mounting a cam or driving a secondary mechanism. This specific SKU lacks a magnet, so it does not support position sensing without modification.
Airtac SED Double Rod Cylinder SED50X85 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X85 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 85 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 SED50X85
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×85 | 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 SED50X85 Is Used
PCB Edge Deburring
Drives opposing deburring tools simultaneously. The 825 N equal both-way force ensures consistent cutting pressure on extend and retract.
Film Web Splicing
Clamps packaging film webs from both sides. Twin rods prevent jaw misalignment during the 85mm splice cycle.
Dual-Side Pick & Place
Transfers small electronic modules using twin grippers. The rear rod end mounts a mechanical limit flag for sequencing.
Is the Airtac SED Double Rod Cylinder SED50X85 the Right Cylinder?
Choose this 50mm bore if your application requires 825 N of bidirectional force at 0.5 MPa. If you need less power, step down to the 40mm bore providing 528 N both ways. For heavier loads, step up to the 63mm bore yielding 1402 N. The twin-rod design inherently resists torsion and provides superior anti-rotation guidance compared to a single-rod SE cylinder.
Remember that a plain SED does not hold position on air loss; the piston will drift. The adjustable cushion only decelerates the load near stroke end. For fail-safe holding, consider a BSED rod-lock cylinder. When replacing an ISO 15552 unit, match the 85mm stroke, PT1/4 port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or 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 SED50X85 FAQ
The double-rod design provides equal force in both directions. It outputs 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The twin rods provide identical extend and retract forces, prevent piston rotation, and allow you to mount tooling or a sensor flag on the rear rod end. It is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
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Standard models are processed and dispatched in 3-5 business days.
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