Airtac SE125 Standard Cylinder SE125X185S
The AirTAC Airtac SE125 Standard Cylinder SE125X185S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 185mm 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
- Stroke185 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X185S
The AirTAC SE125X185S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics. It generates 6136 N of push force at 0.5 MPa and reaches a maximum thrust of 1252 kgf at 1.0 MPa. The extruded aluminum barrel omits external tie rods, yielding a square, flush-mount profile that resists corrosion and simplifies fixture integration. A built-in magnet (-S) enables seamless position feedback using AirTAC CMSE reed or DMSE electronic sensors.
This 125mm bore unit features a robust Ø32mm piston rod and a PT1/2 port. Field-adjustable pneumatic cushioning at both ends allows technicians to tune end-of-stroke deceleration via a set screw, softening hard impacts during high-mass cycling. Operating at 30-500 mm/s, it provides reliable power for demanding industrial environments.
Airtac SE125 Standard Cylinder SE125X185S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X185S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 185 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 SE125X185S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×185 | 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 SE125X185S Is Used
Pallet Dispenser Ejection
Provides the 6136 N push force required to separate and eject empty wooden pallets from automated dispensing magazines in high-throughput logistics hubs.
Hydraulic Press Feeder
Drives heavy steel blanks into a forming press, utilizing the 1252 kgf max thrust and the 185mm stroke to index thick materials safely under high pressure.
Injection Mold Clamp
Secures heavy injection molding tooling halves, relying on the Ø32mm rod and adjustable cushioning to absorb massive end-of-stroke kinetic energy during rapid mold changes.
Is the Airtac SE125 Standard Cylinder SE125X185S the Right Cylinder?
Select this 125mm model when your application requires maximum thrust, such as moving heavy pallets or compressing dense materials. If 6136 N push at 0.5 MPa is excessive, step down to the 100mm bore, which provides 3927 N. Because this is the largest standard SE bore, stepping up requires a custom or alternative series. Since the stroke is 185mm, the unsupported rod length introduces leverage forces; pair this cylinder with an external guide to prevent rod-bearing bending under heavy side loads.
As a true ISO 15552 profile cylinder, the SE125X185S serves as a drop-in replacement for any standard ISO 15552 cylinder, sharing identical mounting interface dimensions and accessories. Remember that the adjustable air cushion only decelerates the piston near stroke end; it does not hold a load. If air pressure drops, the piston drifts, so add a BSE rod lock for fail-safe position holding.
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 SE125X185S FAQ
At 0.5 MPa, the SE125X185S delivers 6136 N push and 5734 N pull. At 0.7 MPa, push increases to 8590 N, with a maximum push of 1252 kgf at 1.0 MPa. The operational speed range is 30-500 mm/s.
No. The SE125X185S is double-acting and relies on live air pressure; the adjustable air cushion only decelerates the piston near stroke end and acts as a brake. For fail-safe load holding, use a BSE rod lock variant or an external pilot-operated check valve.
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