Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10S 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 SAIJ40BX90-10S
The AirTAC SAIJ40X90-10-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 90mm nominal stroke that can be fine-tuned down by up to 10mm, creating an exact 80-90mm usable travel window for precision end-position tuning.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and operates with PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches for flexible positioning feedback.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10S |
|---|---|
| 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 SAIJ40BX90-10S
| 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 SAIJ40BX90-10S Is Used
Machine Changeover
Dial in the 80-90mm travel window during product size changes without bolting on external stops or replacing the entire cylinder.
End-Position Tuning
Fine-tune the retract end position at commissioning to achieve precise mechanical alignment using the rear adjustment screw.
Variable End Stops
Accommodate slight variations in incoming product sizes on a conveyor line by adjusting the stroke back by up to 10mm.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10S the Right Cylinder?
Choose this 40mm bore when an application requires 628N push force at 0.5 MPa, stepping up from a 32mm bore (402N) if more thrust is needed, or down to a 50mm bore (982N) for heavier loads. The adjustable stroke is ideal for machine setup and product changeovers, allowing you to dial in the 80-90mm travel window without swapping cylinders or adding external stops. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for pneumatic locking, consider the SAIL or BSAI series.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints using the SAIJ subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). To replace an existing cylinder, match the 40mm bore, 90mm stroke, 10mm adjustment, PT port thread, and the -S magnet requirement.
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 SAIJ40BX90-10S 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 a usable travel window of 80-90mm. The adjuster acts as a mechanical stop to fine-tune the end position and does not function as a load lock.
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