Airtac SE125 Standard Cylinder SE125X50N
The AirTAC Airtac SE125 Standard Cylinder SE125X50N is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 50mm stroke, PT1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke50 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X50N
The AirTAC SE125X50N is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics, delivering a robust 6136 N push force at 0.5 MPa. Its square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while leaving three integrated sensor grooves exposed for switch placement.
Equipped with an NBR seal, this unit is tailored for standard temperature environments rather than high-heat FKM applications. The field-adjustable pneumatic cushioning at both ends allows technicians to dial in end-of-stroke deceleration via a set screw, softening hard mechanical stops for a 50 mm stroke moving at speeds up to 30-500 mm/s.
Airtac SE125 Standard Cylinder SE125X50N Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X50N |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 mm |
| Acting type | 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 SE series 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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SE125 Standard Cylinder SE125X50N
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×50 | 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: Basic, LB, FA, FB, CA, CB, CR, TC, FTC, TCM1, TCM2. Related SE-family variants: SED (double rod), SEJ (adjustable stroke), BSE (rod lock), BSED (double-rod rod lock).
Where the Airtac SE125 Standard Cylinder SE125X50N Is Used
Metal Stamping Press
Provides 6136 N of thrust at 0.5 MPa to actuate heavy stamping dies and form thick-gauge sheet metal components within a 50 mm travel distance.
Injection Mold Clamping
Applies massive holding force to secure injection mold halves together, leveraging the NBR seal for reliable operation in standard-temperature molding bays.
Heavy-Duty Component Ejection
Delivers a rapid 50 mm ejection stroke to push dense finished metal or plastic parts out of CNC machining centers at up to 500 mm/s.
Is the Airtac SE125 Standard Cylinder SE125X50N the Right Cylinder?
Generating 6136 N of thrust at 0.5 MPa, this 125 mm bore cylinder handles massive loads; if you need less force, stepping down to the 100 mm bore yields 3927 N push, while this SE125X50N itself represents the maximum standard thrust available before requiring a multi-cylinder or hydraulic setup. As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for competing ISO 15552 cylinders, utilizing a PT1/2 port, a 32 mm rod, and standard mounting accessories. Note that this SKU lacks a built-in magnet, so it cannot host CMSE or DMSE position sensors without modification. Since the stroke is 50 mm, side-load bending on the rod bearing is minimal, but external guides are still recommended for offset loads.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/CR/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SE125 Standard Cylinder SE125X50N FAQ
The SE125X50N generates a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force reaches 8590 N. The maximum allowable operating pressure is 1.0 MPa, which yields a maximum push force of 1252 kgf.
No, the SE125X50N is a standard double-acting cylinder and cannot hold a load if air is lost or the valve is centered; the piston will drift. The adjustable air cushion at both ends only decelerates the piston near the stroke end and does not function as a mechanical lock. For position holding, consider the BSE rod-lock variant or an external pilot-operated check valve.
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