Airtac SAI40 Standard Air Cylinder SAI40BX120
The AirTAC SAI40 Standard Air Cylinder SAI40BX120 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 120mm 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
- Stroke120 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 SAI40BX120
The AirTAC SAI40X120 is a double-acting ISO 15552 profile cylinder engineered for pneumatic automation. It delivers a push force of 628 N at 0.5 MPa, making it well-suited for medium-duty handling tasks. The 120 mm stroke is a made-to-order length, providing exact travel for specialized machine movements.
This variant is configured with a SUS304 stainless steel rod for superior corrosion resistance in harsh environments. It uses PT tapered port threads and lacks a piston magnet. If your application requires position sensing, you would need the -S magnet option alongside CMSE or DMSE switches.
Airtac SAI40 Standard Air Cylinder SAI40BX120 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX120 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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 SAI40BX120
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×120 | 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 SAI40BX120 Is Used
Stainless Rod Handling
Ideal for food or packaging equipment where the SUS304 rod prevents corrosion during washdowns.
Mid-Stroke Diverting
The exact 120 mm travel provides precise movement for diverting products on a processing line.
Compact Assembly Press
Offers 628 N of push force at 0.5 MPa for pressing small bearings or pins into housings.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX120 the Right Cylinder?
Choose this 40 mm bore when 32 mm (402 N push at 0.5 MPa) lacks power, but 50 mm (982 N) is oversized. For this 120 mm stroke, side load is minimal, but always ensure rigid mounting using FA or FB flanges. Because this is a non-standard 120 mm stroke, expect a slightly longer lead time.
This cylinder is dimensionally interchangeable per ISO 15552, acting as a direct replacement for other ISO 15552 profile cylinders. It features a PT G1/4 port and a 30-800 mm/s speed range. Note that the standard SAI does not hold loads without air pressure; for fail-safe holding, select the SAIL or BSAI 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 SAI40BX120 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
Yes. The SAI series is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders with matching mounting dimensions.
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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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