Airtac SAI125 Standard Air Cylinder SAI125BX225S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX225S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX225S
The AirTAC SAI125X225-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 125 mm bore unit is tailored for moving substantial payloads across its 225 mm stroke. As a genuine AirTAC component, it ensures seamless dimensional interchangeability with other ISO 15552 standard actuators.
This specific configuration includes a SUS304 stainless steel piston rod (code B) for superior corrosion resistance in harsh environments. It is equipped with a magnetic piston (-S) for use with CMSE or DMSE sensor switches, which mount directly into the dual grooves on the extruded aluminum barrel. The cylinder operates efficiently at speeds between 30-500 mm/s and utilizes PT tapered port threads.
Airtac SAI125 Standard Air Cylinder SAI125BX225S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX225S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SAI125BX225S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SAI125BX225S Is Used
Heavy Stamping
Provides the high thrust necessary for pressing bearings or forming thick metal components in automated fabrication lines.
Pallet Handling
Ideal for lifting and repositioning heavy loaded pallets on conveyor systems where robust push force is mandatory.
Clamp Actuation
Secures large industrial workpieces during machining operations, utilizing its 6136 N output to prevent deflection.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX225S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore falls short—the 100 mm provides 3927 N at 0.5 MPa, whereas this SAI125X225-S yields 6136 N. If your application requires even more power, stepping up to a 160 mm bore offers 10053 N. Because the 225 mm stroke is below the 300 mm threshold, side-load stress on the rod bearing is minimal, though external guides are still recommended for perfectly rigid payload tracking.
For drop-in replacements, match the 125 mm bore, 225 mm stroke, G1/2 port, and your required mounting accessory—such as an LB foot or TC trunnion. Note that this standard cylinder relies on adjustable air cushions to decelerate the piston at stroke ends; it does not hold position if air pressure drops. If your machinery requires static locking during exhaust or valve centering, specify the SAIL or BSAI variant instead.
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 SAI125BX225S 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 SAI125X225-S is a true ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 actuators, provided you match the 125 mm bore, 225 mm stroke, and mounting hardware.
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 SAI125BX225S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.