Airtac SAI125 Standard Air Cylinder SAI125BX30S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX30S
The AirTAC SAI125X30-S is a double-acting ISO 15552 profile cylinder engineered for high-force automation tasks. Operating at 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force, making it ideal for short 30 mm clamping or pressing operations.
This specific configuration includes a SUS304 stainless steel rod for enhanced corrosion resistance and a built-in magnet (-S) for seamless integration with CMSE or DMSE reed switches along the extruded aluminum barrel grooves. It features PT tapered port threads and adjustable air cushions at both ends to manage impact deceleration.
Airtac SAI125 Standard Air Cylinder SAI125BX30S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAI125BX30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAI125BX30S Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force required for short-stroke metal forming and stamping operations in automotive part production.
Pallet Clamping
Secures heavy pallets or large workpieces during machining or packaging processes using its high pull force and rigid 125 mm profile.
Press Fit Assembly
Delivers precise, high-impact force for seating bearings or bushings into housings within a compact 30 mm stroke envelope.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX30S the Right Cylinder?
Selecting this 125 mm bore cylinder is optimal when a 100 mm bore (offering 3927 N at 0.5 MPa) is insufficient for your load requirements, but stepping up to a 160 mm bore (10053 N at 0.5 MPa) would be excessive overkill. The 30 mm stroke is highly compact, minimizing overall machine footprint.
Because the SAI is a double-acting pneumatic actuator, it relies on continuous air pressure to maintain position; if air is exhausted or removed, the piston will drift. For applications requiring fail-safe load holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder. To mount this ISO 15552 interchangeable actuator, utilize standard accessories like FA flanges or CA clevises.
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 SAI125BX30S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 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 model code includes an -S, indicating it has a built-in magnet. It is fully compatible with CMSE and DMSE series sensors mounted in the standard barrel grooves.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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