Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50
The AirTAC SAIJ40X95-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel end-point during commissioning. With a nominal 95 mm stroke and a 50 mm adjustment range, it provides a highly flexible 45-95 mm usable travel window without requiring external stops or cylinder swaps. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This variant is configured with a SUS304 stainless steel rod for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjuster acts purely as a mechanical stop to set deceleration and end-position, meaning it will not hold a load dynamically without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAIJ40BX95-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SAIJ40BX95-50 Is Used
Machine Changeover
Dial in the exact 45 to 95 mm end-stop during product size changeovers without physically swapping the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract stroke at machine commissioning to perfect timing or avoid mechanical crashes, using the 50 mm adjustment range to absorb positioning variations.
Corrosive Environments
Leverage the SUS304 stainless steel rod option for packaging or food lines where moisture is present, maintaining reliable linear motion without rust.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50 the Right Cylinder?
Choose this 40 mm bore adjustable model when your application requires exact end-position tuning or frequent product changeovers, stepping down from a 50 mm bore (982 N push at 0.5 MPa) if your force requirements are lower, or up if you need more thrust. The 16 mm rod and M12x1.25 thread provide robust side-load resistance, though for this 95 mm stroke an external guide is still recommended for heavy loads. Because the SAIJ series omits the FB, CA, CB, and CR mounts, you must select from the available Basic, FA, LB, TC, FTC, TCM1, and TCM2 ISO 15552 mounting interfaces. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
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 SAIJ40BX95-50 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster screw lets you shorten the 95 mm nominal stroke by up to 50 mm, creating a 45-95 mm usable travel window. It functions as a travel stop for end-position tuning, not as a lock to hold the load without air pressure.
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