Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50S 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 SAIJ40BX95-50S
The AirTAC SAIJ40X95-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 95 mm nominal stroke to a 45 mm minimum, creating a 45-95 mm usable window. Delivering 628 N of push force at 0.5 MPa, it is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for electronic DMSE or reed CMSE position sensing.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during machine changeovers. The rear adjuster acts purely as a mechanical stop to set the end position, while the standard PT G1/4 port and extruded aluminum barrel with dual sensor grooves maintain full ISO 15552 dimensional interchangeability.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50S |
|---|---|
| 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 SAIJ40BX95-50S
| 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 SAIJ40BX95-50S Is Used
Variable End Stops
Dial in the exact 45 to 95 mm end position during machine setup without physically replacing the cylinder or adding external stopper blocks.
Product Changeover
Quickly adapt the travel window on a packaging line when handling different carton sizes, using the rear screw to trim the stroke on the fly.
Stainless Rod Actuation
Leverage the SUS304 stainless steel rod for light-duty positioning tasks in environments where standard carbon steel rods face corrosion risks.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-50S the Right Cylinder?
Choose this 40 mm bore when you need precise end-position tuning during commissioning or frequent product-size changes on a line, stepping down from a 50 mm bore (982 N at 0.5 MPa) if your force needs are lower, or up if you require more thrust. Because the SAIJ40X95-50-S features a 95 mm stroke, an external guide is recommended to prevent excessive rod side-loading, even though the 16 mm rod and M12x1.25 thread handle standard stresses well.
Remember that the rear adjuster is a travel stop, not a lock; the cylinder will not hold a load without live air pressure, so for dead-pilot holding you should look at the SAIL or BSAI series. This SKU uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR, and includes the -S magnet for CMSE/DMSE switches.
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 SAIJ40BX95-50S FAQ
The rear adjuster screw lets you mechanically shorten the stroke by up to 50 mm, providing an adjustable travel window of 45 to 95 mm. It functions only as a travel stop and does not lock the load without continuous air pressure.
At 0.5 MPa operating pressure, it provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, the push force increases to 1130 N.
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