Airtac SAI40 Standard Air Cylinder SAI40BX125
The AirTAC SAI40 Standard Air Cylinder SAI40BX125 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 125mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI40 Standard Air Cylinder SAI40BX125
The AirTAC SAI40X125 is a double-acting ISO 15552 profile cylinder offering a push force of 879 N at 0.7 MPa. Its 125 mm stroke provides ample travel for intermediate positioning tasks. The extruded aluminum barrel design omits tie-rods, giving it a clean exterior that drops right into standardized ISO 15552 mounting interfaces.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in humid or washdown settings. Fluid ports are PT tapered threads, and the barrel includes dual-side sensor grooves. For applications needing dual opposing rods or locking mechanics, consider the related SAID or SAIL series.
Airtac SAI40 Standard Air Cylinder SAI40BX125 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX125 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40BX125
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SAI40 Standard Air Cylinder SAI40BX125 Is Used
Package Diverting
Provides the 628 N push force at 0.5 MPa needed to actuate diverter arms on high-speed packaging conveyors.
Small Part Pressing
Exerts precise downward pressure for seating bearings or small electronic components during light assembly operations.
Carton Clamping
Uses the 125 mm stroke to extend and grip varying sizes of cardboard cartons on automated handling lines.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX125 the Right Cylinder?
If you need slightly less thrust, the neighboring 32 mm bore yields 563 N at 0.7 MPa; stepping up to a 50 mm bore provides 1374 N. At 125 mm of stroke, side loads are moderate, but always ensure the load is guided to prevent rod-bearing wear. This cylinder uses a G1/4 PT port and accepts standard FA, FB, or LB mounting accessories. Note that a plain SAI relies on continuous air pressure to hold a load; if power drops, the piston drifts. For fail-safe holding, use an external pilot-operated check valve or the SAIL lock variant.
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 SAI40 Standard Air Cylinder SAI40BX125 FAQ
At 0.7 MPa, the SAI40X125 generates a push force of 879 N and a pull force of 724 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
Yes, the SAI40X125 is dimensionally interchangeable per ISO 15552, meaning it shares standardized mounting interfaces with other ISO 15552 profile cylinders.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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