Airtac SED Double Rod Cylinder SED125X140
The AirTAC Airtac SED Double Rod Cylinder SED125X140 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 140mm, PT1/2 ports, adjustable cushioning.
- BoreØ125 mm
- Stroke140 mm
- Port sizePT1/2
- ConfigurationDouble rod
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SED Double Rod Cylinder SED125X140
The AirTAC SED125X140 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 125mm bore and 140mm stroke. Because a 32mm rod occupies both piston faces, the annulus area is identical on extend and retract, yielding an equal both-way thrust of 5734 N at 0.5 MPa. Its extruded aluminum barrel integrates sensor grooves, though this specific SKU lacks the -S magnet for position sensing.
A field-adjustable air cushion at both ends (40mm cushion length) safely decelerates heavy loads near stroke end. The twin M27x2 rod ends provide exceptional torsional rigidity, preventing load rotation better than a single-rod design while allowing rear-side tooling or cam actuation.
Airtac SED Double Rod Cylinder SED125X140 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED125X140 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 140 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 SED125X140
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×140 | 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 SED125X140 Is Used
Heavy Press Ejection
Drives an automotive stamping press ejection system, using the massive 5734 N both-way force to reliably push heavy panels out of dies on extension and retract the tooling on the return stroke.
Multi-Axis Bending Brake
Powers a thick-plate bending brake where the twin 32mm rods prevent the heavy clamp beam from twisting under asymmetric loads during high-force metal forming.
Large Valve Actuation
Actuates a large industrial process valve, utilizing the rear rod end to mount a mechanical cam flag that physically trips external limit switches for redundant safety feedback.
Is the Airtac SED Double Rod Cylinder SED125X140 the Right Cylinder?
Select this 125mm bore when an application demands massive equal bidirectional force, stepping up from the 80mm bore (2268 N at 0.5 MPa) to the series maximum of 5734 N at 0.5 MPa. As the largest available bore, there is no larger option for higher force needs. Choose this double-rod SED over a single-rod SE when twin-side guidance or rear-rod cam actuation is required. Note that a plain SED does not hold position on air loss; for fail-safe holding, specify a BSED double-rod lock cylinder. For ISO 15552 drop-in replacement, match the 125mm bore, 140mm stroke, PT1/2 port, and mounting from the available Basic, FA, LB, TC, FTC, TCM1, or TCM2 set.
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 SED125X140 FAQ
Because the double-rod design creates equal annulus areas on both sides of the piston, the force is identical in both directions: 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and a maximum of 1169 kgf at 1.0 MPa.
The twin-rod design provides superior torsional rigidity and anti-rotation guidance for heavy loads. It also allows the rear rod end to drive a secondary mechanism or sensor flag, while maintaining a true ISO 15552 mounting interface for drop-in interchangeability.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SED Cylinders
Request a Quote for Airtac SED Double Rod Cylinder SED125X140
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.