Airtac SAI40 Standard Air Cylinder SAI40BX550S
The AirTAC SAI40 Standard Air Cylinder SAI40BX550S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 550mm 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
- Stroke550 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 SAI40BX550S
The AirTAC SAI40X550-S is a double-acting ISO 15552 profile cylinder engineered for mid-range linear motion. Delivering a push force of 879 N at 0.7 MPa, this 40 mm bore unit utilizes a 550 mm stroke to bridge the gap between compact handling and extended travel distances. The extruded aluminum barrel omits tie-rods, presenting a clean exterior that drops directly into standardized ISO 15552 mounting footprints.
This specific configuration includes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or chemically active settings. Equipped with a built-in magnet (-S), the cylinder seamlessly integrates with CMSE and DMSE sensor switches seated in the dual side grooves. Fluid control is managed via PT tapered G1/4 ports, while adjustable air cushions at both ends tame kinetic energy at stroke extremes.
Airtac SAI40 Standard Air Cylinder SAI40BX550S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX550S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 550 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 SAI40BX550S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×550 | 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 SAI40BX550S Is Used
Package Diverting
Pushes medium-weight cartons across sorting lanes with 879 N of force, while the 550 mm stroke accommodates wider conveyor belts.
Component Ejection
Ejects molded parts from press beds, utilizing the SUS304 rod to resist cooling fluids and repetitive mechanical stress.
Pallet Handling
Positions empty pallets for robotic loading, relying on the 550 mm travel to clear adjacent machinery safely.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX550S the Right Cylinder?
Selecting this 40 mm bore over the smaller 32 mm variant increases your 0.5 MPa push thrust from 402 N to 628 N, providing necessary power for heavier slides. If an application demands even greater force, stepping up to the 50 mm bore raises the 0.5 MPa output to 982 N. Because this model features a 550 mm stroke, the extended rod is susceptible to bending under side loads; utilize an external guide rail or a guided cylinder carriage to prevent premature rod-bearing wear.
As a true ISO 15552 cylinder, it serves as a direct replacement for any standard 40 mm bore, 550 mm stroke unit with a G1/4 port and standard mounting accessories like FA flanges or TC trunnions. Note that the standard adjustable air cushion decelerates the piston but does not lock the load; if the machine loses air pressure, the rod will drift. Use an external pilot-operated check valve or the SAIL locking variant for fail-safe position holding.
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 SAI40BX550S FAQ
At an operating pressure of 0.7 MPa, the SAI40X550-S generates a push force of 879 N and a pull force of 528 N. The theoretical maximum force at 1.0 MPa is 128 kgf.
Yes. The SAI40X550-S is dimensionally interchangeable per ISO 15552. You can drop it into existing 40 mm bore setups utilizing standard G1/4 ports and standard mounting accessories without modifying the machine frame.
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