Airtac SAI40 Standard Air Cylinder SAI40BX55
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40BX55 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 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 SAI40BX55
The AirTAC SAI40X55 is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 55mm stroke. It delivers a push thrust of 628 N and a pull thrust of 528 N at 0.5 MPa, making it well-suited for compact mid-range actuation tasks. The extruded aluminum barrel is designed without tie-rods and includes sensor grooves on both sides for flexible switch mounting.
This specific configuration features a SUS304 stainless steel piston rod (option B) for superior corrosion resistance in washdown or mildly chemical environments. It uses PT tapered port threads and operates without a magnet. The adjustable air cushions at both ends ensure smooth deceleration across its 30-800 mm/s speed range.
Airtac SAI40 Standard Air Cylinder SAI40BX55 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX55 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAI40BX55
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAI40BX55 Is Used
Packaging Diverters
Provides the 628N push force needed to actuate short-stroke routing gates on high-speed packaging conveyors.
Clamp Mechanisms
The 55mm stroke and SUS304 rod are ideal for securing stainless steel workpieces during machining operations.
Material Ejection
Delivers rapid, repeatable ejection of finished parts from press dies using its 30-800 mm/s speed range.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX55 the Right Cylinder?
If your application requires less force, stepping down to the 32mm bore yields 402 N of push force at 0.5 MPa, while moving up to the 50mm bore provides 982 N for heavier loads. Because this 55mm stroke is relatively short, side-load stress on the rod bearing is minimal, though external guides are always recommended for rigidly attached loads. Note that a standard SAI cylinder relies on continuous air pressure to hold its position; if the air supply is lost, the piston will drift. For fail-safe load holding, consider the SAIL variant with an air-released lock or an external pilot-operated check valve. This model serves as a direct dimensional direct replacement for other ISO 15552 profile cylinders, matching the 40mm bore, 55mm stroke, PT G1/4 port, and standard mounting accessories like FA or LB.
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 SAI40BX55 FAQ
At an operating pressure of 0.5 MPa, the SAI40X55 generates 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 SAI40X55 is manufactured to the ISO 15552 profile standard, making it dimensionally interchangeable with other ISO 15552 cylinders of the same 40mm bore and 55mm stroke configuration.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAI40 Standard Air Cylinder SAI40BX55
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.