Airtac SAI125 Standard Air Cylinder SAI125X30S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X30S
The AirTAC SAI125X30-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty short-stroke tasks. It delivers a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa. The 30 mm stroke is optimal for high-force clamping or pressing operations where compact retraction is required.
This variant includes a built-in magnet for proximity sensing and uses a standard carbon steel piston rod. It features dual sensor grooves on the extruded aluminum barrel for direct mounting of CMSE or DMSE switches. The PT tapered port thread guarantees a tight, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125X30S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAI125X30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAI125X30S Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force required to deform metal sheets or punch holes in automated fabrication lines.
Pallet Stops
Acts as a high-force stopper mechanism for heavy pallets, utilizing the short 30 mm stroke to rapidly arrest momentum.
Injection Molding Ejectors
Delivers powerful, compact ejection force to free molded parts from stationary dies before robotic extraction.
Is the Airtac SAI125 Standard Air Cylinder SAI125X30S the Right Cylinder?
For operations needing slightly less force, stepping down to the 100 mm bore yields 3927 N of push force at 0.5 MPa. If your application exceeds 6136 N, consider the 160 mm bore which provides 10053 N. Because this is a short 30 mm stroke, side-load bending is minimal, but always verify rod bearing loads.
This cylinder serves as a dimensionally interchangeable drop-in replacement for other ISO 15552 profile cylinders. To match this exact unit, specify the 125 mm bore, 30 mm stroke, PT G1/2 port, TC trunnion or FA flange mounting, and the -S magnet option. Remember that standard SAI cylinders rely on live air pressure to move; they do not internally hold loads when pressure is exhausted. For fail-safe holding, use 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 SAI125X30S FAQ
At 0.5 MPa, it provides a push force of 6136 N and a pull force of 5734 N. If you increase the pressure to 0.7 MPa, the push force rises to 8590 N.
Yes, the SAI125X30-S is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders like those from Festo or SMC.
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