Airtac SAI125 Standard Air Cylinder SAI125AX45S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX45S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX45S
The AirTAC SAI125X45-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for high-impact clamping and pressing tasks. The 45 mm stroke provides compact, rapid actuation for short-travel machinery.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically washed environments. Equipped with a magnet (-S), the extruded aluminum barrel includes dual-side sensor grooves designed for seamless mounting of CMSE and DMSE reed switches. Its PT tapered ports ensure tight, reliable pneumatic connections.
Airtac SAI125 Standard Air Cylinder SAI125AX45S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX45S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 45 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 SAI125AX45S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×45 | 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 SAI125AX45S Is Used
Heavy-Duty Stamping
Provides the 6136 N push force required to form, punch, or stamp thick-gauge metal components in short-stroke presses.
Automotive Clamping
Secures heavy chassis or drivetrain components during robotic welding, utilizing the robust 125mm bore and SUS420J2 rod.
Pallet Braking
Halts heavy pallets on high-mass conveyors, using adjustable air cushions at both ends to soften the 45mm stroke end-impact.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX45S the Right Cylinder?
Stepping down to the 100mm bore reduces the 0.5 MPa push force to 3927 N, whereas moving up to the 160mm bore increases it to 10053 N. Choose this 125mm model when your application demands upward of 6000 N of thrust within a short 45mm travel distance. Because this is a non-standard stroke (made-to-order), expect a slightly longer lead time compared to standard 50mm increments.
This cylinder utilizes a double-acting design, meaning air pressure controls both extension and retraction. Note that it does not hold position or maintain a load if air pressure is lost or exhausted; the piston will drift. For drop-in replacements, this unit is dimensionally interchangeable per ISO 15552 with other standard profile cylinders. Mounting accessories include FA/FB flanges and TC trunnions, and it operates at speeds of 30-500 mm/s.
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 SAI125AX45S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X45-S is a genuine ISO 15552 profile cylinder, making its mounting interface and envelope dimensions fully interchangeable with other ISO 15552 standard cylinders of the same bore size.
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