Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10 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 SAIJ40BX90-10
The AirTAC SAIJ40X90-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 90 mm nominal stroke by up to 10 mm for a precise 80-90 mm usable travel window. Delivering 628 N of push force at 0.5 MPa, it features a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread for a reliable pneumatic seal.
Because the adjuster acts purely as a mechanical stop on the retract end, it cannot hold a load without live air pressure; for true position holding, consider the SAIL or BSAI locking variants. This profile cylinder supports a 30-800 mm/s speed range and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10 |
|---|---|
| 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 SAIJ40BX90-10
| 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 SAIJ40BX90-10 Is Used
End-Position Tuning
Dial in the exact retract distance within the 80-90 mm window during machine setup to accommodate minor mechanical variations without adding external stops.
Product Changeover
Quickly adjust the stroke end by up to 10 mm on a packaging line when switching to a slightly different product size, minimizing downtime.
Corrosive Assembly Tasks
Leverage the SUS304 stainless steel rod for light assembly tasks in environments where moisture or mild chemicals would degrade standard carbon steel rods.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX90-10 the Right Cylinder?
Choose this 40 mm bore when an application requires slightly more force than a 32 mm cylinder (which provides 402 N push at 0.5 MPa) but less bulk than a 50 mm option (982 N). The 10 mm adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeover without swapping out the entire cylinder for a fixed-stroke SAI variant. When matching an ISO 15552 replacement, verify the 90 mm stroke, 10 mm adjuster, PT port, and mounting style.
Although the 16 mm rod diameter handles standard operational stresses well, any cylinder approaching or exceeding 300 mm of stroke requires an external guide to prevent excessive side-loading. Since this configuration lacks the -S magnet, it cannot host CMSE or DMSE sensors without a model change.
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 SAIJ40BX90-10 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 879 N.
The rear adjuster screw acts as a mechanical stop that shortens the 90 mm nominal stroke by up to 10 mm, creating an effective 80-90 mm travel window. It only sets the end position and does not lock the load without continuous air pressure.
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