Airtac SAI40 Standard Air Cylinder SAI40BX155
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40BX155 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 SAI40BX155
The AirTAC SAI40X155 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa. Its 155 mm stroke provides the exact mid-range extension needed for compact assembly machinery and material handling tasks.
This specific configuration is built with a SUS304 stainless steel piston rod (option B) for superior corrosion resistance, alongside PT tapered port threads. Because it lacks a standard magnet, it is optimized for pure pneumatic actuation without sensor feedback requirements.
Airtac SAI40 Standard Air Cylinder SAI40BX155 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX155 |
|---|---|
| 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 SAI40BX155
| 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 SAI40BX155 Is Used
Compact Assembly
Drives small clamping arms and pick-and-place units in electronics assembly where a 155 mm stroke provides precise component placement.
Package Diverting
Actuates routing gates on conveyor lines, utilizing the 628 N push force at 0.5 MPa to redirect lightweight cartons reliably.
Textile Machinery
Operates tensioning and guiding mechanisms in humid textile environments, benefiting from the SUS304 stainless steel rod.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX155 the Right Cylinder?
Select this 40 mm bore when an application requires more power than the 32 mm version (which provides 402 N at 0.5 MPa) but lacks the physical space for a 50 mm unit. The 155 mm stroke is a non-standard increment that offers a custom extension distance without the cost of a fully made-to-order unit.
If your workflow demands position holding upon loss of air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke ends and will not lock the load. For those setups, consider the SAIL locking variant or an external pilot check valve. This model serves as a direct replacement for any ISO 15552 cylinder utilizing a 40 mm bore, 155 mm stroke, G1/4 port, and standard mounting accessories like FA or FB flanges.
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 SAI40BX155 FAQ
At an operating pressure of 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 SAI40X155 is dimensionally interchangeable per ISO 15552 standards. It can serve as a direct replacement for other ISO 15552 profile cylinders with a 40 mm bore and 155 mm stroke.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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