Airtac SAI125 Standard Air Cylinder SAI125X40
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X40
The AirTAC SAI125X40 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and 40mm stroke. It provides a robust 6136N push force at 0.5MPa, making it well-suited for heavy-duty short-trroke clamping and lifting tasks.
This genuine unit incorporates standard carbon steel rod material and PT tapered port threads. Because it lacks a built-in magnet, position detection requires external proximity switches rather than internal CMSE or DMSE sensors.
Airtac SAI125 Standard Air Cylinder SAI125X40 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 40 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 SAI125X40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×40 | 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 SAI125X40 Is Used
Heavy-Duty Stamping
Provides the high 6136N push force needed to securely hold metal workpieces during aggressive stamping and forming operations.
Injection Mold Clamping
Ideal for short-stroke mold closure tasks where immense holding pressure and a compact 40mm stroke are required.
Pallet Lift Stations
Raises heavy loaded pallets at transfer stations, utilizing the robust 125mm bore to generate immediate lifting power.
Is the Airtac SAI125 Standard Air Cylinder SAI125X40 the Right Cylinder?
Select this 125mm bore when 80mm falls short, as the 80mm version only yields 2513N at 0.5MPa. For applications needing to hold a load mechanically without live air pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants, as the standard adjustable air cushions only decelerate the piston near stroke end.
As a dimensionally interchangeable ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 cylinders. Ensure your setup matches the 125mm bore, 40mm stroke, G1/2 port, and desired mounting accessory like an FA flange or TC trunnion.
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 SAI125X40 FAQ
At an operating pressure of 0.5MPa, this 125mm bore cylinder generates a push force of 6136N and a pull force of 5734N.
Yes, the SAI125X40 is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders using the same 125mm bore and mounting interface.
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 SAI125X40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.