Airtac SAI125 Standard Air Cylinder SAI125X25S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 25mm stroke, G1/2 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
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X25S
The AirTAC SAI125X25-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Operating at 0.5 MPa, it provides a substantial push force of 6136 N and a pull force of 5734 N. The 25 mm stroke makes this unit exceptionally compact for its 125 mm bore size, delivering massive thrust in short bursts.
As a genuine AirTAC component, it features an integrated magnet (-S) for direct compatibility with CMSE and DMSE reed switches via the dual sensor grooves on the extruded aluminum barrel. The standard carbon steel piston rod ensures robust performance, while the adjustable air cushions at both ends manage impact deceleration effectively.
Airtac SAI125 Standard Air Cylinder SAI125X25S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAI125 Standard Air Cylinder SAI125X25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI125 Standard Air Cylinder SAI125X25S Is Used
Heavy Stamping
Delivers 6136 N of impact force for short-stroke metal forming and pressing operations.
Clamp Actuation
Ideal for securely locking large workpieces into position during machining processes.
Pallet Braking
Provides high stopping power to arrest heavy pallets on conveyor lines instantly.
Is the Airtac SAI125 Standard Air Cylinder SAI125X25S the Right Cylinder?
Choose this 125 mm bore when an application requires moving heavy loads over very short distances. If 6136 N of push force at 0.5 MPa is excessive, stepping down to an 80 mm bore yields 2513 N, whereas scaling up to a 160 mm bore provides 10053 N. The G1/2 PT tapered port accommodates high airflow necessary for rapid actuation.
Because the stroke is only 25 mm, side-load stress on the rod bearing is minimal compared to longer strokes. However, this cylinder cannot sustain a load if air pressure drops; the adjustable cushion only slows the piston near the end caps and does not function as a braking or locking mechanism. For suspended loads requiring failsafe holding, consider the SAIL variant with an air-released lock.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for 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 (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI125 Standard Air Cylinder SAI125X25S FAQ
At an operating pressure of 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X25-S is dimensionally interchangeable per ISO 15552 standards, allowing it to serve as a drop-in replacement for other standard profile cylinders with matching mounting interfaces.
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.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAI125 Standard Air Cylinder SAI125X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.