Airtac SAI125 Standard Air Cylinder SAI125X75S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X75S
The AirTAC SAI125X75-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty handling. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for short-stroke clamping and high-thrust pressing operations. The extruded aluminum barrel design omits tie-rods, offering a clean profile that drops directly into standardized ISO 15552 mounting footprints.
Equipped with a magnet for position detection, this unit integrates seamlessly with CMSE and DMSE sensor switches fitted into the dual side grooves. The standard carbon steel piston rod ensures durable performance, while the PT tapered port thread guarantees a secure, leak-free pneumatic connection. Adjustable air cushions at both ends absorb kinetic energy, protecting the internal mechanics from end-of-stroke impact.
Airtac SAI125 Standard Air Cylinder SAI125X75S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAI125X75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAI125X75S Is Used
Heavy-Duty Stamping
Generates 8590 N of push force at 0.7 MPa, ideal for short-stroke metal forming, riveting, and heavy press operations.
Industrial Clamping
Secures large molds or heavy fabricated components during machining or welding, utilizing the robust 125 mm bore for unwavering hold-down force.
Pallet Stopper Gates
Acts as a high-capacity stop or diverter in conveyor systems, using the integrated magnet and CMSE sensors to confirm blocking position.
Is the Airtac SAI125 Standard Air Cylinder SAI125X75S the Right Cylinder?
Select this 125 mm bore when an application demands substantially more force than a 100 mm bore cylinder, which offers 3927 N of push force at 0.5 MPa. The 75 mm stroke is optimal for compact, high-thrust tasks where a longer extension would waste cycle time or space. Because the stroke is under 300 mm, rod-bearing bending stress is minimal, though external guides should still be used to handle heavy lateral payloads.
This model is dimensionally interchangeable with other ISO 15552 cylinders, simplifying machine upgrades and maintenance. It features a G1/2 port, a PT tapered thread type, and utilizes standard mounting accessories like TC trunnions or FA flanges. If the machinery requires the piston to maintain its position during a complete loss of air pressure, a standard SAI will drift; in those scenarios, specify the SAIL variant with an air-released lock or a BSAI clamp-lock cylinder 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 SAI125X75S FAQ
At 0.5 MPa, this cylinder provides 6136 N of push force and 5734 N of pull force. If operating pressure increases to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X75-S is a true ISO 15552 profile cylinder, meaning its mounting dimensions are standardized for drop-in interchangeability with other ISO 15552 compliant cylinders of the same bore size.
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