Airtac SAI40 Standard Air Cylinder SAI40BX550
The AirTAC SAI40 Standard Air Cylinder SAI40BX550 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 SAI40BX550
The AirTAC SAI40X550 is a double-acting ISO 15552 profile cylinder engineered for standardized mounting interfaces. Delivering a push force of 879 N at 0.7 MPa, this 40 mm bore unit is built to execute a 550 mm stroke with reliable pneumatic thrust. Its extruded aluminum barrel omits tie-rods, presenting a clean exterior that drops directly into existing ISO 15552 footprints.
This specific configuration utilizes a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It features PT tapered port threads and lacks a standard magnet. For high-temperature environments up to 70 C, the standard TPU seals handle typical demands, while a Viton (H) seal option is available for extreme thermal exposure.
Airtac SAI40 Standard Air Cylinder SAI40BX550 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX550 |
|---|---|
| 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 SAI40BX550
| 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 SAI40BX550 Is Used
Long-Reach Diversion
Pushes packages across a wide conveyor belt using its 550 mm stroke, relying on the 879 N force at 0.7 MPa to redirect heavy cartons smoothly.
Stainless Rod Actuation
Ideal for food packaging or washdown machinery where the SUS304 rod material prevents corrosion during frequent cleaning cycles.
Pneumatic Pressing
Applies consistent downward pressure for light assembly tasks, benefiting from the adjustable air cushions at both stroke ends to prevent end-cap impact.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX550 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 extra power for mid-range actuation. If your application requires even greater force, stepping up to the 50 mm bore raises the 0.5 MPa push output to 982 N. The G1/4 port size ensures adequate flow for its 30-800 mm/s speed range.
Because this model features a 550 mm stroke, the unsupported piston rod is susceptible to bending under side loads. Implement an external guide rail or utilize a dedicated guided cylinder to prevent premature rod-bearing wear. Furthermore, standard double-acting operation cannot hold a load if air pressure drops; integrate an external pilot-operated check valve if position holding is mandatory. To match this exact unit, specify a 40 mm bore, 550 mm stroke, PT port thread, and no magnet.
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 SAI40BX550 FAQ
At an operating pressure of 0.7 MPa, the SAI40X550 generates a push force of 879 N and a pull force of 528 N. At 0.5 MPa, the push force is 628 N.
Yes, the SAI40X550 is dimensionally interchangeable per ISO 15552. You can drop it into existing mounts using accessories like FA flanges or LB foot brackets, provided you match the 40 mm bore and 550 mm stroke.
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 SAI40BX550
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.