Airtac SAI125 Standard Air Cylinder SAI125BX15S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX15S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX15S
The AirTAC SAI125X15-S is a double-acting ISO 15552 profile cylinder engineered for high-force tasks, delivering a push force of 6136 N at 0.5 MPa. Its short 15 mm stroke is ideal for compact clamping and heavy-duty holding mechanisms within confined machinery envelopes.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance, PT tapered port threads, and an integrated magnet (-S) for seamless position sensing using CMSE or DMSE switches along the dual-side sensor grooves.
Airtac SAI125 Standard Air Cylinder SAI125BX15S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX15S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 15 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 SAI125BX15S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 SAI125BX15S Is Used
Heavy-Duty Stamping
Provides the robust 6136 N force needed for short-stroke metal stamping, punching, and riveting operations in automated fabrication lines.
Product Clamping
Ideal for securely gripping and holding heavy workpieces or pallets on conveyor systems during machining or assembly processes.
Press Fit Assembly
Delivers precise, high-impact force for inserting bearings, bushings, or pins into housings on automated assembly machinery.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX15S the Right Cylinder?
For applications requiring less force, the SAI100 bore provides 3927 N at 0.5 MPa, whereas stepping up to the SAI160 yields 10053 N. Because this 15 mm stroke is very short, side-load bending is minimal, but always ensure axial load alignment to prevent premature rod-bearing wear.
Note that this standard cylinder relies on live air pressure to maintain its position; if air is exhausted, the load will drift. For true mechanical holding without continuous pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard 125 mm bore interface.
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 SAI125BX15S FAQ
At an operating pressure of 0.5 MPa, the SAI125X15-S 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 SAI125X15-S includes an integrated magnet (-S) and features sensor grooves on both sides of the barrel, making it fully compatible with CMSE and DMSE series reed switches.
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