Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S
The AirTAC SAIJ40X375-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 628N of push force at 0.5 MPa. Its integrated 10mm adjustment screw creates a precise 365-375mm usable travel window, allowing you to fine-tune the retract end position during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
This specific SKU features a SUS304 stainless steel rod (code B) for superior corrosion resistance and ships with a magnet for CMSE reed and DMSE electronic sensors. It uses a G1/4 port and achieves speeds of 30-800 mm/s. The rear adjuster functions strictly as a travel stop to set deceleration, meaning it will not hold a load without continuous live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 375 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 SAIJ40BX375-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×375 | 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 SAIJ40BX375-10S Is Used
End-Position Tuning
Dial in the exact 365-375mm retract distance during machine commissioning to perfect product seating without machining new hard stops.
Product Changeover
Quickly adjust the stroke by up to 10mm on packaging lines when switching between slightly different package lengths.
Corrosive Assembly
Leverage the SUS304 stainless steel rod for reliable actuation in light chemical or washdown assembly environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX375-10S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when your application requires variable end-stops or frequent product-size changeovers. If your setup demands greater thrust, stepping up to a 50mm bore yields 982N at 0.5 MPa; conversely, a 32mm bore drops to 402N. Because the nominal stroke is 375mm, an external guide is recommended to prevent excessive side-loading on the rod.
For a true ISO 15552 replacement match, ensure you specify the 40mm bore, 375mm stroke, 10mm adjustment, PT tapered port threads, and the -S magnet option. Remember that neither the rear adjuster nor the air cushions act as a lock; for load-holding without live air, consider an AirTAC SAIL or BSAI cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ40BX375-10S 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 effective stroke by up to 10mm, creating a usable travel window of 365-375mm. This stopper sets the travel end but does not lock the load without live air pressure.
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