Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-30S 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 SAIJ40BX90-30S
The AirTAC SAIJ40X90-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force at 0.5 MPa and features a 16mm SUS304 stainless steel rod, making it highly suitable for environments where corrosion resistance is necessary. The integrated magnet allows for seamless position detection using AirTAC CMSE reed or DMSE electronic sensors.
This model provides a nominal 90mm stroke that can be fine-tuned down by up to 30mm, creating a precise 60-90mm usable travel window. The external rear stopper allows you to dial in the exact end position during commissioning without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port ensures a tight pneumatic connection.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-30S |
|---|---|
| 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 SAIJ40BX90-30S
| 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 SAIJ40BX90-30S Is Used
Product Changeovers
Quickly dial in the 60-90mm stroke window during format size changes on a packaging line without replacing the cylinder or adding external stops.
End-Position Tuning
Fine-tune the retract end position during machine commissioning to achieve exact clamping depth, utilizing the 30mm rear adjustment screw.
Corrosive Environments
Leverage the SUS304 stainless steel rod for pushing tasks in washdown or mildly corrosive manufacturing settings while maintaining ISO 15552 dimensions.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-30S the Right Cylinder?
Choose this 40mm bore when an application requires more power than a 32mm cylinder (402N push at 0.5 MPa) but lacks the physical space for a 50mm unit (982N push). The adjustable 60-90mm travel window is ideal for product changeovers on a line, allowing operators to reset the end-stop quickly instead of installing a fixed-stroke SAI cylinder. Operating speed ranges from 30-800mm/s.
When ordering, verify the 40mm bore, 90mm nominal stroke, 30mm adjustment range, PT G1/4 port, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Keep in mind the rear adjuster acts only as a travel stop, not a lock; the SAIJ cannot hold a load without live air, so consider a SAIL or BSAI cylinder if true load-holding is required.
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 SAIJ40BX90-30S FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 30mm. This turns the 90mm nominal stroke into a 60-90mm adjustable window, allowing precise end-position tuning without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ40X90-30-S provides 628N of push force and 528N of pull force. It can reach up to 1130N push force at its maximum 0.9 MPa pressure.
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