Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-30 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 SAIJ40AX90-30
The AirTAC SAIJ40X90-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to shorten the effective travel. With a 90mm nominal stroke and a 30mm adjustment range, it provides a usable travel window of 60-90mm. This fine-tuning capability allows precise end-position calibration at commissioning without swapping the cylinder or adding external stops. It delivers 628N of push force and 528N of pull force at 0.5MPa.
This model uses a SUS420J2 stainless steel rod for enhanced durability against side loads, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjuster acts only as a travel stop; it does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-30 |
|---|---|
| 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 SAIJ40AX90-30
| 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 SAIJ40AX90-30 Is Used
Machine Setup Tuning
Dial in the exact 60-90mm travel distance during machine commissioning without physically swapping cylinders or adding external stopper blocks.
Product Changeover
Quickly adapt the end-stop position on automated lines when handling slightly different product sizes that require varied stroke lengths.
End-Position Calibration
Fine-tune the retract end position to account for mechanical wear or slight variations in fixture alignment over time.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40AX90-30 the Right Cylinder?
Choose this 40mm bore when you need precise variable end-stops for product changeovers, stepping down from a 50mm bore (982N push at 0.5MPa) if your application requires less force. The 30mm adjustment window on this 90mm stroke means you can dial back the travel by up to 30mm. Because the stroke is under 300mm, side-load stress is minimal, but always ensure the load is guided externally for optimal cylinder life. For load-holding without live air, select a SAIL or BSAI cylinder instead. To match this ISO 15552 replacement, use a 40mm bore, 90mm stroke, 30mm adjustment, PT port, and no 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 SAIJ40AX90-30 FAQ
The rear adjuster screw lets you shorten the nominal 90mm stroke by up to 30mm, providing an effective adjustable travel window of 60-90mm. The adjuster acts as a mechanical stop and does not lock the load without air pressure.
At 0.5MPa operating pressure, the SAIJ40X90-30 provides 628N of push force and 528N of pull force. It can reach up to 879N push force at 0.7MPa.
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