Airtac SAI125 Standard Air Cylinder SAI125BX5S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX5S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 5mm 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
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX5S
The AirTAC SAI125X5-S is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke clamping and ejecting tasks. Operating at 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force. This 5 mm stroke variant is purpose-built for applications requiring rapid, heavy-duty actuation over a minimal distance.
This configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in humid or washdown environments. It includes a piston magnet (-S) for integration with CMSE or DMSE sensor switches, which mount directly into the dual grooves on the extruded aluminum barrel. PT tapered ports are standard.
Airtac SAI125 Standard Air Cylinder SAI125BX5S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX5S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 5 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 SAI125BX5S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×5 | 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 SAI125BX5S Is Used
Heavy-Duty Stamping
Ideal for short-stroke metal forming or stamping tasks where a brief, high-impact 6136 N force is required to seat or mark components.
Pallet Ejection
Provides robust 5 mm ejection force to dislodge heavy finished goods or pallets from a machining center conveyor system.
Guided Clamping
Used in heavy-duty fixture clamps to secure large castings or weldments in place during secondary machining operations.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX5S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore (providing 3927 N push at 0.5 MPa) lacks the necessary power for heavy pressing or clamping, but a 160 mm bore is physically too large for the machine envelope. The 5 mm stroke is optimal for high-cycle ejectors or gripping blocks where full extension is unnecessary.
For applications requiring the load to remain held without continuous air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke end and do not function as a locking device. In drop-prevention scenarios, specify the SAIL variant with an air-released lock or utilize an external pilot-operated check valve. Being dimensionally interchangeable per ISO 15552, it serves as a direct drop-in replacement for other ISO 15552 profile cylinders with identical 125 mm bore, 5 mm stroke, PT ports, and 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 SAI125BX5S 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 SAI125X5-S is a genuine ISO 15552 profile cylinder. Its standardized mounting dimensions, PT port locations, and 125 mm bore make it dimensionally interchangeable with other ISO 15552 cylinders, serving as a drop-in replacement.
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