Airtac SE125 Standard Cylinder SE125X850S
The AirTAC Airtac SE125 Standard Cylinder SE125X850S 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 SE125X850S
The AirTAC SE125X850S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty automation. Operating at 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force, scaling up to a maximum output of 1252 kgf at 1.0 MPa. The 850 mm stroke is a non-standard, made-to-order length designed to provide extended travel for large-scale machinery.
This 125 mm bore unit features a robust 32 mm piston rod and a PT1/2 port. The extruded aluminum barrel design eliminates external tie rods, creating a smooth, compact exterior that resists corrosion and allows for flush mounting. Equipped with a built-in magnet (-S), it supports AirTAC CMSE reed and DMSE electronic sensors for precise end-position detection.
Airtac SE125 Standard Cylinder SE125X850S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X850S |
|---|---|
| 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 SE125X850S
| 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 SE125X850S Is Used
Automotive Press Die Handling
Leveraging its 6136 N push force at 0.5 MPa and 850 mm stroke, this cylinder shifts heavy stamping dies into large mechanical presses, utilizing its adjustable cushioning to prevent impact damage at full extension.
Pallet Accumulation Gate
The extended 850 mm travel is ideal for diverting fully loaded warehouse pallets between heavy-duty roller lines, while the -S magnet triggers DMSE sensors to confirm gate position.
Injection Mold Ejection
Provides the high-force extraction power necessary to pull large molded plastic components from deep tooling cavities, using its 32 mm rod to withstand significant tensile loads during retraction.
Is the Airtac SE125 Standard Cylinder SE125X850S the Right Cylinder?
When sizing this actuator, consider stepping down to the 100 mm bore if your application only requires 3927 N of push at 0.5 MPa, or stepping up is not an option as 125 mm is the largest standard SE bore delivering 6136 N at 0.5 MPa. Because this is an 850 mm stroke, the long unsupported piston rod is susceptible to bending under heavy lateral loads; an external guide mechanism should be used to prevent rod-bearing damage. This cylinder is dimensionally interchangeable per ISO 15552, meaning it serves as a direct drop-in replacement for other ISO 15552 cylinders with a 125 mm bore, 850 mm stroke, PT1/2 port, and standard mounting accessories.
Note that the field-adjustable air cushion at both ends decelerates the piston near the stroke limits to soften hard end stops, but it is not a locking mechanism. If your application must hold a vertical load without live air pressure, you must integrate a BSE rod lock or an external pilot-operated check valve.
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 SE125X850S FAQ
At 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force is 8590 N. The maximum push force is 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
Yes, it shares the standardized ISO 15552 / VDMA 24562 mounting interface, making it dimensionally interchangeable with other ISO 15552 profile cylinders. Because it includes the -S magnet, it is fully compatible with AirTAC CMSE reed switches and DMSE electronic sensors.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SE125 Standard Cylinder SE125X850S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.