Airtac SAI125 Standard Air Cylinder SAI125BX10
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX10 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 SAI125BX10
The AirTAC SAI125X10 is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke automation. It delivers a substantial 6136 N of push force at just 0.5 MPa, making it highly effective for brief, heavy-duty pressing or clamping operations. This specific configuration features a SUS304 stainless steel piston rod (code B) for superior corrosion resistance and utilizes PT tapered port threads.
Because the stroke is only 10 mm, the piston travels a minimal distance, which reduces cycle times and limits mechanical wear. Although the standard barrel lacks an embedded magnet for proximity sensing, the extruded aluminum profile includes sensor grooves on both sides. You can easily add position feedback by specifying the -S magnet option and using CMSE or DMSE series switches.
Airtac SAI125 Standard Air Cylinder SAI125BX10 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX10 |
|---|---|
| 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 SAI125BX10
| 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 SAI125BX10 Is Used
Heavy-Duty Stamping
Provides abrupt, high-force impact for short-stroke metal forming, riveting, or embossing tasks within a compact footprint.
Pallet Clamping
Secures heavy workholding pallets or industrial fixtures instantly, utilizing 6136 N of push force to prevent movement during machining.
Industrial Joining
Applies concentrated pressure for pin insertion, bushing alignment, or heavy structural component assembly operations.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX10 the Right Cylinder?
Selecting this 125 mm bore model is appropriate when an application requires intense thrust over a very short distance. If 6136 N at 0.5 MPa is excessive for your payload, stepping down to the 100 mm bore yields 3927 N, whereas upgrading to a 160 mm bore provides 10053 N. The PT tapered porting ensures a tight, reliable pneumatic seal when installed with appropriate thread sealant.
For short strokes like this 10 mm design, side-load stress on the rod bearing is minimal. However, operators must remember that a standard SAI cylinder does not lock or hold a load when air pressure is removed; the piston will drift. If your setup requires true fail-safe position holding without live pressure, consider the SAIL variant with an air-released lock, or the BSAI bidirectional clamp-lock cylinder.
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 SAI125BX10 FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X10 is dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 profile cylinders, matching standard mounting dimensions and accessories like FA flanges or TC trunnions.
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