Airtac SE125 Standard Cylinder SE125X375S
The AirTAC Airtac SE125 Standard Cylinder SE125X375S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 375mm 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
- Stroke375 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X375S
The AirTAC SE125X375S is a double-acting single-rod profile cylinder built to the ISO 15552 standard, delivering a robust 6136 N push at 0.5 MPa. Its square extruded aluminum barrel eliminates external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while protecting internal pneumatics.
Equipped with a built-in magnet (-S), this unit supports AirTAC CMSE reed and DMSE electronic sensors for precise end-position detection. The field-adjustable air cushioning at both ends allows technicians to tune deceleration via a set screw, softening hard end stops for heavy loads moving at up to 500 mm/s.
Airtac SE125 Standard Cylinder SE125X375S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X375S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 375 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 SE125X375S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×375 | 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 SE125X375S Is Used
Injection Mold Platen Ejection
Provides the high 6136 N push force required to eject heavy molded plastic parts from a press platen, utilizing the 375 mm stroke to fully clear the deep mold cavity.
Heavy Stamping Press Feed
Indexes thick steel coil into a mechanical stamping press, relying on the field-adjustable cushioning to smoothly decelerate the heavy 125 mm bore payload without shock loading.
Palletizer Lift Arm
Actuates a heavy-duty lift arm in automated end-of-line palletizing, where the -S magnet triggers DMSE electronic sensors to confirm load elevation at 375 mm of travel.
Is the Airtac SE125 Standard Cylinder SE125X375S the Right Cylinder?
Generating 6136 N of push at 0.5 MPa, this 125 mm bore is the largest in the SE range. If your application is over-specified, stepping down to the 100 mm bore yields 3927 N of push, saving physical envelope and air consumption. Because this is the maximum bore, there is no larger standard SE option for higher force requirements. As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for competing cylinders using the same mounting interface and PT1/2 ports.
With a 375 mm stroke, the 32 mm hard-chrome piston rod experiences significant leverage under side loads. To prevent premature rod-bearing wear and seal failure, an external guide rail should be installed to support the load. Note that the adjustable air cushion only decelerates the piston near stroke end; it does not lock the rod, so a BSE rod lock is required for fail-safe holding when air pressure is lost.
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 SE125X375S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N, with a maximum rated push of 1252 kgf at 1.0 MPa. The operational speed range is 30-500 mm/s.
No. The SE125X375S features adjustable air cushions at both ends to decelerate the piston, but these are not locking mechanisms. If air pressure is lost or the valve is centered, the rod will drift. For fail-safe load holding, you must use an AirTAC BSE rod lock or an external pilot-operated check valve.
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