Airtac SAI40 Standard Air Cylinder SAI40BX155S
The AirTAC SAI40 Standard Air Cylinder SAI40BX155S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm 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
- Stroke155 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 SAI40BX155S
The AirTAC SAI40X155-S is a double-acting ISO 15552 profile cylinder engineered with a 40mm bore and a 155mm non-standard stroke. It provides a push force of 628 N and a pull force of 528 N at 0.5 MPa, making it well-suited for mid-range actuation tasks requiring precise 155mm travel.
This variant is configured with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for direct compatibility with CMSE and DMSE sensor switches. The extruded aluminum barrel features sensor grooves on both sides, and fluid connections use PT tapered threads.
Airtac SAI40 Standard Air Cylinder SAI40BX155S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX155S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAI40BX155S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAI40BX155S Is Used
Packaging Equipment
Drives precise 155mm folding or sealing flaps in corrugated packaging lines where exact travel is mandatory.
Material Diverters
Actuates routing gates on conveyor systems, utilizing the 628 N push force to move moderate product weights.
Textile Machinery
Handles thread or fabric guide arms where the SUS304 rod prevents degradation in humid manufacturing environments.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX155S the Right Cylinder?
Select this specific 155mm stroke when standard 150mm or 160mm options do not fit your exact machinery kinematics. If your application requires less force, stepping down to a 32mm bore yields 402 N at 0.5 MPa, while stepping up to a 50mm bore provides 982 N. Because 155mm is a made-to-order stroke, expect a brief lead time.
This cylinder uses adjustable air cushions at both ends to decelerate the piston smoothly. It does not hold its load if air pressure drops; for fail-safe locking, consider the SAIL or BSAI variants. As a true ISO 15552 profile cylinder, it serves as a direct replacement for any standard 40mm bore, 155mm stroke, G1/4 port configuration with LB or FA 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 SAI40 Standard Air Cylinder SAI40BX155S FAQ
At 0.5 MPa, this 40mm bore cylinder provides a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
Yes, the SAI40X155-S is dimensionally interchangeable per ISO 15552. You can drop it into existing 40mm bore, 155mm stroke, G1/4 port setups using standard FA, LB, or TC mounting accessories.
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1-Year Warranty
Covers non-human-caused product damage.
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