Airtac SED Double Rod Cylinder SED125X100
The AirTAC Airtac SED Double Rod Cylinder SED125X100 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø32mm piston rod exits BOTH ends of the Ø125mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 100mm, PT1/2 ports, adjustable cushioning.
- BoreØ125 mm
- Stroke100 mm
- Port sizePT1/2
- ConfigurationDouble rod
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SED Double Rod Cylinder SED125X100
The AirTAC SED125X100 is a double-acting, double-rod profile cylinder machined to ISO 15552 dimensional standards. A 32 mm hardened rod exits both end covers, yielding an identical annulus area on each piston face. This geometry generates 5734 N of thrust in both extend and retract directions at 0.5 MPa, completely eliminating the force disparity found in single-rod units.
This 125 mm bore variant features a PT1/2 port and a 40 mm adjustable air cushion at both ends to bleed off kinetic energy near stroke extremes. Because this specific SKU lacks the -S magnet option, it cannot host CMSE or DMSE sensors; position verification requires external switches. The extruded aluminum barrel omits external tie rods, and the extending rear rod provides a robust platform for mounting a secondary cam or tooling.
Airtac SED Double Rod Cylinder SED125X100 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED125X100 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 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 (Ø125mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 5734 N |
| 0.7 MPa | 8027 N |
| Max (@1.0 MPa) | 1169 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 SED125X100
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SED125X100 Is Used
Heavy-Duty Stamping Press
Drives a 5734 N bidirectional stamping die where the rear rod simultaneously pushes a knockout pin, ensuring synchronized part ejection.
Multi-Axis Bending Fixture
Clamps heavy steel tubing against rotation during a bend, using the dual-rod structure to maintain precise angular alignment under 8028 N of force.
Large Component Transfer
Shifts heavy cast machinery blocks between machining centers, utilizing the through-rod to mount a secondary cam for triggering downstream gates.
Is the Airtac SED Double Rod Cylinder SED125X100 the Right Cylinder?
Select this 125 mm bore when a task demands heavy bidirectional power, as it outputs 5734 N each way at 0.5 MPa (8028 N at 0.7 MPa, maxing at 1169 kgf). If your application requires less force, the adjacent 100 mm bore provides 3681 N both ways. Since this is the largest standard SED profile, stepping up requires a custom solution. The twin-rod design is superior to a single-rod SE when you need strict anti-rotation guidance or must drive a mechanism from both ends. Remember that the air cushion only decelerates the load near stroke end; it does not hold position on air loss. For fail-safe holding, integrate an external rod lock or pilot-operated check valve. Ensure your design leaves physical clearance for the rear rod protrusion.
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 SED125X100 FAQ
Because the double-rod design creates equal piston areas on both sides, it delivers 5734 N of force at 0.5 MPa and 8028 N at 0.7 MPa in both directions. The maximum output is 1169 kgf at 1.0 MPa.
Yes, it drops in for any ISO 15552 double-rod profile cylinder matching the 125 mm bore and 100 mm stroke. Just ensure your mounting falls within the SED set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and that you have rear-rod clearance.
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