Airtac SAI125 Standard Air Cylinder SAI125X125S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X125S
The AirTAC SAI125X125-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N push force at 0.5 MPa, it excels in high-thrust operations. The 125 mm stroke provides compact actuation for machinery requiring substantial power over short distances. A factory-installed magnet enables seamless position detection.
This model features a standard carbon steel piston rod for high tensile strength and utilizes a PT tapered port thread for a secure, leak-free pneumatic connection. The extruded aluminum barrel includes sensor grooves on both sides, allowing direct mounting of CMSE or DMSE reed switches without additional brackets.
Airtac SAI125 Standard Air Cylinder SAI125X125S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAI125X125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SAI125X125S Is Used
Heavy Stamping
Provides the 6136 N force at 0.5 MPa needed for pressing, riveting, and forming metal components in automated fabrication cells.
Clamping Systems
Secures large workpieces or heavy molds during CNC machining and welding operations using its substantial 5734 N pull force.
Pallet Handling
Actuates heavy-duty stops, lifts, and positioning gates on high-mass pallet conveyor lines with reliable short-stroke power.
Is the Airtac SAI125 Standard Air Cylinder SAI125X125S the Right Cylinder?
Select this 125 mm bore when an 80 mm bore (providing 2513 N at 0.5 MPa) is insufficient for your load, but you want to avoid stepping up to a massive 160 mm cylinder. The 125 mm stroke keeps the retracted length manageable for tight machinery layouts.
As an ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard 125 mm bore ISO 15552 unit. Matching components include a G1/2 port, M27x2 rod thread, and standard mounting accessories like FA flanges or TC trunnions. Note that this standard cylinder does not hold loads when air pressure is removed; for dead-load holding, specify the SAIL or BSAI variant.
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 SAI125X125S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X125-S is a genuine ISO 15552 profile cylinder. Its standardized mounting dimensions and G1/2 port make it a drop-in replacement for other ISO 15552 cylinders of the same bore size.
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 SAI125X125S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.