Airtac SAI125 Standard Air Cylinder SAI125BX10S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 10mm 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
- Stroke10 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX10S
The AirTAC SAI125X10-S is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke operations. It provides a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it ideal for heavy-duty clamping and holding tasks. The extruded aluminum barrel design omits tie-rods, ensuring a clean exterior that aligns perfectly with standardized ISO 15552 mounting dimensions.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. Equipped with a magnet (-S), it supports CMSE and DMSE sensor switches that mount directly into the dual-side sensor grooves. The cylinder uses PT tapered port threads, adjustable air cushions at both ends, and operates reliably at speeds between 30-500 mm/s.
Airtac SAI125 Standard Air Cylinder SAI125BX10S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 10 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 SAI125BX10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×10 | 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 SAI125BX10S Is Used
Heavy-Duty Stamping
Provides the intense 6136 N push force required to seat or stamp solid components securely within a tight 10 mm travel distance.
Industrial Clamping
Ideal for rigidly locking heavy workpieces in place during machining operations, utilizing its high pull force and short stroke.
Press Fit Assembly
Delivers controlled, high-impact force for pressing bearings or bushings into housings quickly and reliably.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX10S the Right Cylinder?
Select this 125 mm bore model when an application demands substantial force within a very compact 10 mm stroke, such as high-tonnage clamping. If your application requires less force, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, which may save space and air consumption. Conversely, if higher thrust is needed, the 160 mm bore offers 10053 N at 0.5 MPa.
Because the stroke is extremely short, side-load stress on the rod bearing is minimal compared to longer strokes. However, remember that a standard SAI cylinder relies on continuous air pressure to maintain its position; if pressure is lost, the piston will drift. For dead-end holding without live pressure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder. This model is fully interchangeable with other ISO 15552 cylinders via standard FA, FB, or TC mounting accessories.
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 SAI125BX10S FAQ
At an operating pressure of 0.5 MPa, this 125 mm 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 SAI125X10-S is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with matching 125 mm bore and 10 mm stroke specifications, utilizing standard mounting hardware.
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