Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S
The AirTAC SAIJ40X90-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel down to a 15-90 mm window from its 90 mm nominal stroke. Delivering 879N of push force at 0.7 MPa, it fits mid-range automation tasks perfectly. The -S magnet enables position sensing across the dual-side barrel grooves using CMSE reed or DMSE solid-state switches.
This variant features a SUS420J2 stainless steel rod and tapered PT ports. The rear adjuster functions purely as a mechanical stop for end-position tuning during commissioning, not as a load-holding lock; for fail-safe holding without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 SAIJ40AX90-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SAIJ40AX90-75S Is Used
Machine Changeover
Dial in the 15-90 mm travel window during product size transitions without replacing the cylinder or adding external stops.
End-Position Tuning
Fine-tune the retract end-position at commissioning to absorb mechanical tolerances and achieve precise end-of-stroke placement.
Adjustable Ejector
Set variable ejection distances on an assembly line by adjusting the rear stopper to match varying part sizes.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-75S the Right Cylinder?
Choose this 40mm bore when you need more force than the 32mm version (563N at 0.7 MPa) but want a lighter footprint than the 63mm bore. An adjustable stroke is ideal for machine setups requiring variable end-stops without physically swapping cylinders, unlike a fixed-stroke SAI model. To match this ISO 15552 replacement exactly, verify the 90mm stroke, 75mm adjustment range, PT porting, and the -S magnet option. The 16mm rod and M12x1.25 thread handle standard side loads well, though external guides are recommended for any high-offset payloads.
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 SAIJ40AX90-75S FAQ
At 0.7 MPa operating pressure, this 40mm bore cylinder provides 879N of push force and 528N of pull force.
The rear adjuster allows you to mechanically shorten the 90mm nominal stroke, providing a usable travel window of 15-90 mm for fine-tuning end positions without live air locking the load.
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