Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S
The AirTAC SAIJ40X800-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 790-800mm usable travel window. Delivering 879N of push force at 0.7 MPa, it utilizes a SUS304 stainless steel rod for superior corrosion resistance and is equipped with a magnet for CMSE reed and DMSE electronic sensors.
This adjustable-stroke design allows precise end-position tuning during commissioning without adding external stops. The PT tapered port thread ensures a tight pneumatic seal, while the extruded aluminum barrel maintains standard ISO 15552 mounting dimensions.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAIJ40BX800-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SAIJ40BX800-10S Is Used
Machine Setup Fine-Tuning
Dial in the exact 790-800mm retract position during machine commissioning without swapping out the entire cylinder.
Product Changeover
Quickly adjust the end-stop by up to 10mm to accommodate slightly different product sizes on an automated line.
Long-Stroke Positioning
Use the 800mm travel to push components across a wide workstation while relying on the rear screw for final placement accuracy.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10S the Right Cylinder?
Choose this 40mm bore when an application requires 879N push force at 0.7 MPa, stepping up from a 32mm bore (563N) or down from a 63mm bore (2182N). The 10mm rear adjuster is ideal for fine-tuning the retract end position on the fly, whereas a fixed SAI cylinder locks you into a single 800mm dimension.
Because the stroke is 800mm, the 16mm rod needs external guidance to prevent excessive side-loading and sagging. The rear adjuster acts strictly as a travel stop, not a lock; for load-holding without live air pressure, select an AirTAC SAIL or BSAI cylinder. This SKU uses the SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR.
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 SAIJ40BX800-10S FAQ
At 0.5 MPa it provides 628N push and 528N pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster acts as a stop that lets you trim the effective travel back by up to 10mm, creating a 790-800mm usable window. It is a travel stop, not a lock, and does not hold the load without live air.
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