Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-10S 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 SAIJ40AX90-10S
The AirTAC SAIJ40X90-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 628N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod and a PT tapered port thread. By integrating a magnet, it supports CMSE reed and DMSE electronic sensors for precise position detection.
This model provides a nominal 90mm stroke that can be fine-tuned down by up to 10mm, creating an 80-90mm usable travel window. This built-in adjuster acts as a mechanical stop to set the exact retract end position during commissioning, but it does not lock the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-10S |
|---|---|
| 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 SAIJ40AX90-10S
| 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 SAIJ40AX90-10S Is Used
Product Changeovers
Dial in the 80-90mm travel window during format changes on packaging lines, ensuring precise end-stops without swapping cylinders.
Machine Setup
Fine-tune the retract position at commissioning using the rear stopper, eliminating the need for custom machined spacers.
Variable End Stops
Adjust the effective stroke on the fly for sorting pushers that handle varying package sizes on a single conveyor.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-10S the Right Cylinder?
Choose this 40mm bore when you need more power than the 32mm version (402N push at 0.5 MPa) but want a smaller footprint than the 50mm option (982N). The adjustable stroke is selected over a fixed SAI cylinder when applications require frequent product changeovers or exact end-position tuning without adding external stops. For holding loads without continuous air, consider a SAIL or BSAI cylinder instead.
To replace an ISO 15552 cylinder, match the 40mm bore, 90mm stroke, 10mm adjustment, PT G1/4 port, and the -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the stroke is under 300mm, side-load stress is minimal, though the 16mm rod still requires external guidance for heavy lateral loads.
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 SAIJ40AX90-10S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster screw allows you to shorten the 90mm nominal stroke by up to 10mm, providing an 80-90mm travel window. It functions as a mechanical stop for end-position tuning and is not a locking device.
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