Airtac SE125 Standard Cylinder SE125X650S
The AirTAC Airtac SE125 Standard Cylinder SE125X650S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 650mm 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
- Stroke650 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X650S
The AirTAC SE125X650S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty actuation. It delivers a substantial 6136 N push force at 0.5 MPa, scaling to 8590 N at 0.7 MPa. The extruded aluminum barrel features a clean, no-tie-rod exterior that resists corrosion and allows flush mounting on machinery.
This 650 mm stroke unit includes a built-in magnet (-S) for CMSE reed and DMSE electronic position sensing. Field-adjustable pneumatic cushioning at both ends allows you to tune end-of-stroke deceleration, absorbing the high kinetic energy generated by moving large masses at speeds up to 30-500 mm/s.
Airtac SE125 Standard Cylinder SE125X650S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X650S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 650 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 SE125X650S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×650 | 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 SE125X650S Is Used
Injection Mold Clamping
Provides 6136 N of extend force at 0.5 MPa to secure heavy injection mold halves within 650 mm of travel, utilizing the adjustable cushion to soften hard stops.
Press Ejection Systems
Drives heavy metal stamping ejectors over a 650 mm stroke, using the built-in magnet to trigger DMSE electronic sensors for precise part-release timing.
Automotive Body Welding
Positions large welding fixtures and subframes, benefiting from the tie-rod-free extruded profile for flush mounting on robotic assembly lines.
Is the Airtac SE125 Standard Cylinder SE125X650S the Right Cylinder?
Stepping down to the 100 mm bore yields 3927 N push at 0.5 MPa, whereas no larger standard SE bore exists above 125 mm. Because this 650 mm stroke generates significant leverage and side-loading forces on the 32 mm rod and its bearing, an external guide is strongly recommended to prevent premature bending and seal failure.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a drop-in replacement sharing the same 125 mm bore, 650 mm stroke, PT1/2 port, and standard mounting accessories. Note that the adjustable air cushion only decelerates the piston near stroke end; it does not lock or hold the load if air pressure is lost. For position holding, consider the BSE rod lock variant.
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 SE125X650S FAQ
At 0.5 MPa, it provides 6136 N push and 5734 N pull. At 0.7 MPa, push increases to 8590 N. The maximum push is 1252 kgf at 1.0 MPa, with an operating speed range of 30-500 mm/s.
Yes, the SE125X650S is dimensionally interchangeable per ISO 15552 standards. It shares the same 125 mm bore, PT1/2 port, and mounting footprint, allowing a drop-in retrofit alongside existing ISO 15552 cylinders.
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