Airtac SED Double Rod Cylinder SED50X40S
The AirTAC SED Double Rod Cylinder SED50X40S 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 40mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke40 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 SED50X40S
The AirTAC SED50X40S is a double-acting, double-rod ISO 15552 profile cylinder with a 50mm bore and 40mm stroke. Because a 20mm rod occupies both piston sides, the annulus area is identical in each direction. This yields an equal push and pull force of 825N at 0.5 MPa, avoiding the lopsided thrust of single-rod units.
An integrated magnet (-S) enables position tracking via CMSE reed or DMSE electronic sensors. The extruded aluminum barrel lacks external tie rods, and field-adjustable air cushions at both ends manage end-of-stroke deceleration across the 30-800mm/s speed range.
Airtac SED Double Rod Cylinder SED50X40S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X40S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 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 SED50X40S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 SED50X40S Is Used
Pick-and-Place Grippers
Drives synchronous dual grippers using the 825N both-way force, leveraging the rear rod for a cam-actuated part verification flag.
Transfer Pushers
Indexes cartons on a packaging line, using the twin rods to resist rotational twisting during high-speed 30-800mm/s transfers.
Web Guide Actuators
Steers material webs evenly, benefiting from identical extend and retract thrust so positioning torque remains perfectly balanced.
Is the Airtac SED Double Rod Cylinder SED50X40S the Right Cylinder?
Choose this 50mm bore to get 825N of equal both-way force at 0.5 MPa. If your load is lighter, step down to the 40mm bore for 528N; for heavier drives, step up to the 63mm bore for 1402N. The twin-rod design provides superior anti-rotation stability and lets you mount a rear cam or secondary tooling, which a single-rod SE cannot do. Standard mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
A plain SED50X40S will drift on air loss, as its cushions only decelerate near stroke end and do not lock the piston. For fail-safe holding, use a BSED double-rod lock or an external pilot-operated check valve. Ensure your PT1/4 port and M16x1.5 rod match your ISO 15552 footprint for a direct replacement.
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 SED50X40S FAQ
The SED50X40S provides equal force in both directions because rods exit both ends. It delivers 825N at 0.5 MPa, 1154N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The twin rods provide equal thrust both ways and better load guidance against rotation. The protruding rear rod also allows you to mount a secondary mechanism or sensor flag, which is impossible on a single-rod ISO 15552 cylinder.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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