Airtac SE125 Standard Cylinder SE125X850
The AirTAC Airtac SE125 Standard Cylinder SE125X850 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 850mm 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
- Stroke850 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X850
The AirTAC SE125X850 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, peaking at 8590 N push at 0.7 MPa. The extruded aluminum barrel omits external tie rods, yielding a flush, corrosion-resistant body that mounts cleanly to tooling while maintaining the standardized ISO 15552 footprint for direct retrofitting.
This 850 mm stroke is a non-standard, made-to-order length exceeding the 1500 mm maximum standard catalog stroke for this bore. It features a Ø32 mm piston rod and PT1/2 porting. Because this specific SKU lacks the -S magnet code, it is not position-sensor ready out of the box. The field-adjustable pneumatic cushioning at both ends allows technicians to dial in end-of-stroke deceleration, softening hard impacts when cycling heavy loads.
Airtac SE125 Standard Cylinder SE125X850 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X850 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 850 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 SE125X850
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×850 | 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 SE125X850 Is Used
Palletizer Case Push-Off
Uses the 6136 N push force at 0.5 MPa to sweep heavy filled cartons off the end of a palletizer conveyor line onto a wrapping station.
Injection Mold Ejector
Leverages the 8590 N push at 0.7 MPa to break large automotive interior trim panels free from deep mold cavities during ejection.
Heavy Press Knockout
Employs the 5734 N retract pull force to extract binding pins from thick steel stamping dies, utilizing the 850 mm stroke for deep reach.
Is the Airtac SE125 Standard Cylinder SE125X850 the Right Cylinder?
Choose this 125 mm bore when you need maximum thrust, but be aware that an 850 mm stroke on a Ø32 mm rod invites rod-bearing bending under side loads; always pair this length with an external guide to prevent premature seal wear. If you need to step down, the 100 mm bore offers 3927 N push at 0.5 MPa. If you need to step up, 125 mm is the largest standard SE bore, delivering 1252 kgf at 1.0 MPa. Remember that a plain SE cylinder drifts when air is lost or exhausted; if your application must hold a load without live pressure, specify a BSE rod lock variant instead.
For ISO 15552 dimensional interchangeability, match the 125 mm bore, 850 mm stroke, PT1/2 port, and your required mounting accessory (such as a TC centre trunnion). Since this unit has no -S magnet, you cannot use AirTAC CMSE or DMSE sensors without modifying the piston assembly.
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 SE125X850 FAQ
At 0.5 MPa, the SE125X850 delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force is 8590 N. The maximum push force is 1252 kgf at 1.0 MPa operating pressure.
Yes, it is dimensionally interchangeable per ISO 15552 mounting dimensions, meaning it shares the exact same footprint and mounting hardware as other ISO 15552 profile cylinders. However, a plain SE cylinder does not hold position when air is exhausted; the adjustable cushion only decelerates near stroke end. For load holding, use a BSE rod lock.
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