Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S
The AirTAC SAIJ40X80-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 80 mm stroke that can be fine-tuned backward by up to 30 mm, yielding a precise 50-80 mm usable travel window during commissioning. Delivering 628 N of push force at 0.5 MPa, it handles moderate actuation tasks without needing external stops.
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. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SAIJ40BX80-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SAIJ40BX80-30S Is Used
Product Changeover Tuning
Dial back the stroke from 80 mm down to 50 mm instantly on the production line when switching to a shorter package size, avoiding mechanical teardown.
End-Stop Calibration
Fine-tune the final retract position during machine commissioning to achieve exact placement, compensating for mechanical tolerances without adding external stops.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in humid or washdown environments to push and position components reliably while maintaining clean surface integrity.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX80-30S the Right Cylinder?
Select this 40 mm bore cylinder when an application requires 628 N of push force at 0.5 MPa, stepping down from a 50 mm bore that yields 982 N, or up from a 32 mm bore providing 402 N. The adjustable stroke is chosen over a fixed SAI cylinder when you need variable end-stops for product changeovers, allowing you to dial in the exact 50-80 mm travel without swapping hardware. The rear adjuster acts only as a travel stop and relies on live air pressure; it does not hold the load. For true load-holding without air, consider an external rod lock or the SAIL series. To match this ISO 15552 replacement exactly, verify the 40 mm bore, 80 mm stroke, 30 mm adjustment, PT ports, SUS304 rod, and -S 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 SAIJ40 Adjustable Cylinder SAIJ40BX80-30S FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 30 mm. This creates a 50-80 mm adjustable travel window without changing the cylinder itself.
At an operating pressure of 0.5 MPa, the SAIJ40X80-30-S provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
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