Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S
The AirTAC SAIJ40X280-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned down by up to 10 mm, creating a precise 270-280 mm usable travel window for exact end-position calibration. Delivering 628 N of push force at 0.5 MPa, it handles moderate actuation tasks reliably.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet operates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAIJ40 Adjustable Cylinder SAIJ40BX280-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX280-10S Is Used
Machine Changeover
Dial in the 270-280 mm retract position during product size changes without physically swapping the actuator or adding external stopper blocks.
End-Position Calibration
Fine-tune the exact end of stroke at commissioning using the rear screw, absorbing mechanical tolerances in the fixture setup.
Material Handling
Pushes or diverts items on a line with 628 N of force, using the SUS304 rod to resist moisture and washdown environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S the Right Cylinder?
Select this 40 mm bore cylinder when an application requires 628 N push force at 0.5 MPa, stepping up from a 32 mm bore that provides 402 N, or down from a 63 mm bore yielding 1559 N. The 10 mm adjustable window is ideal for machine setup and product changeovers, allowing you to dial in the retract end-position without swapping cylinders or adding external stops. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is a stop, not a lock.
Because the 280 mm stroke is substantial, the 16 mm rod and M12x1.25 rod thread provide rigidity, but an external guide is recommended to prevent excessive side-loading on long unsupported travel. To match this ISO 15552 interchangeable cylinder, verify the 40 mm bore, 280 mm stroke, 10 mm adjustment, PT G1/4 port, and -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40 Adjustable Cylinder SAIJ40BX280-10S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 10 mm, providing a usable travel window of 270 to 280 mm. It functions as a mechanical stop and does not lock the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX280-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.