Airtac SAI125 Standard Air Cylinder SAI125BX140S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX140S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX140S
The AirTAC SAI125X140-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, this 125mm bore unit is built to execute demanding linear motion tasks with reliability. The 140mm stroke provides substantial travel distance for high-capacity machinery.
This specific configuration features a SUS304 stainless steel piston rod for superior corrosion resistance in harsh environments. Equipped with a built-in magnet (-S), it seamlessly integrates with CMSE and DMSE series sensor switches via the dual-side extruded aluminum barrel grooves for precise end-of-stroke positioning.
Airtac SAI125 Standard Air Cylinder SAI125BX140S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX140S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 140 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 SAI125BX140S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×140 | 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 SAI125BX140S Is Used
Heavy Stamping
Provides the high thrust needed for metal forming and heavy-duty stamping presses in automotive parts manufacturing.
Lift and Transfer
Handles the elevation and transfer of heavy pallets or engine blocks on automated assembly lines.
Large Carton Handling
Actuates large packaging mechanisms and heavy material diversion gates in high-throughput logistics hubs.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX140S the Right Cylinder?
Selecting this 125mm bore is ideal when 100mm cylinders (offering 3927 N at 0.5 MPa) lack the necessary thrust for your heavy payloads. If your application requires even higher force, stepping up to the 160mm bore yields 10053 N at 0.5 MPa. The PT tapered port threads ensure a tight, reliable pneumatic connection.
Because the standard double-acting design relies on continuous air pressure, the piston will drift if supply is lost. Do not depend on the adjustable air cushions to hold a suspended load; for fail-safe position holding, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. Being dimensionally interchangeable per ISO 15552, it serves as a direct drop-in replacement for other ISO 15552 profile cylinders.
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 SAI125BX140S 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 SAI125X140-S is a genuine ISO 15552 profile cylinder, meaning its mounting interface is dimensionally interchangeable with other ISO 15552 standard cylinders, serving as a direct drop-in replacement.
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 SAI125BX140S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.