Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-40S
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40AX80-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke80 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 SAIJ40 Adjustable Cylinder SAIJ40AX80-40S
The AirTAC SAIJ40X80-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 80 mm nominal travel to a precise usable window of 40-80 mm. This variant includes a SUS420J2 stainless steel rod for enhanced corrosion resistance and a built-in magnet for position sensing.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract distance during commissioning or product changeover; it does not lock the load without continuous air pressure. Dimensionally interchangeable per ISO 15552, this extruded aluminum profile cylinder accepts a reduced set of mounts (Basic, FA, LB, TC, FTC, TCM1, TCM2) and utilizes PT tapered G1/4 ports.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-40S |
|---|---|
| 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-40S
| 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 SAIJ40AX80-40S Is Used
Changeover Adjustments
Dial in the 40-80 mm travel window during product size changeovers on packaging lines without adding external stopper blocks.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning to achieve precise seating forces for delicate assembly tasks.
Sensor-Ready Actuation
Leverage the built-in magnet with DMSE electronic sensors to confirm the adjusted end-of-stroke position in automated workflows.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX80-40S the Right Cylinder?
The adjustable stroke is ideal for machine setups requiring variable end-stops, giving you a 40-80 mm window to accommodate product size changes on the fly. Because the nominal stroke is 80 mm, side-loading is minimal, but always ensure the load is guided externally for optimal seal life.
To match this exact configuration for an ISO 15552 replacement, verify the 40 mm bore, 80 mm nominal stroke, 40 mm adjustment range, PT G1/4 port, and the -S magnet option. The integrated magnet supports AirTAC CMSE (reed) and DMSE (electronic) sensors fitted into the dual-side sensor grooves. Remember that the rear adjuster only sets the travel end; for load-holding without live air, consider an external rod lock or a SAIL pneumatic lock cylinder.
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 SAIJ40AX80-40S FAQ
The rear adjuster screw allows you to shorten the effective stroke by up to 40 mm from the 80 mm nominal length, creating a usable travel window of 40-80 mm. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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