Airtac SAI125 Standard Air Cylinder SAI125AX20
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 20mm 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
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX20
The AirTAC SAI125X20 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty operations, generating 6136 N of push force at 0.5 MPa. This 20 mm stroke is a made-to-order configuration tailored for compact, high-thrust clamping or short lifting movements.
Built with an extruded aluminum barrel, it features dual sensor grooves for CMSE or DMSE switches. The piston rod utilizes SUS420J2 stainless steel (code A) for superior corrosion resistance, and the PT tapered port thread guarantees a reliable, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX20 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 20 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 SAI125AX20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×20 | 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 SAI125AX20 Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force required for short-stroke metal stamping and forming operations in tight spaces.
Pallet Stopping
Acts as a heavy-duty stopper block on high-mass conveyor lines, absorbing kinetic energy with its rigid 125 mm profile.
Automotive Clamping
Secures heavy automotive chassis components during robotic welding, leveraging the SUS420J2 rod for resistance against weld spatter.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX20 the Right Cylinder?
For applications requiring slightly less force, stepping down to a 100 mm bore yields 3927 N at 0.5 MPa. If higher thrust is necessary, the 160 mm bore provides 10053 N. Because this is a non-standard 20 mm stroke, expect a made-to-order lead time. To mount this ISO 15552 profile cylinder, utilize CA or CB clevis brackets along with the G1/2 port. Note that this cylinder lacks a magnet for sensors (-S) as specified. If the machinery loses air pressure, the piston will drift; use the SAIL variant for pneumatic locking or the BSAI bidirectional clamp-lock to hold loads safely.
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 SAI125AX20 FAQ
At 0.5 MPa, the SAI125X20 delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X20 is dimensionally interchangeable per ISO 15552 profile-barrel standards. It serves as a drop-in replacement for other ISO 15552 cylinders using matching mounting accessories.
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