Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S
The AirTAC SAIJ40X150-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 75 mm to 150 mm without swapping out the unit. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, utilizing a G1/4 port for efficient pneumatic flow.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and an integrated magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 SAIJ40BX150-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 SAIJ40BX150-75S Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 75-150 mm window during machine commissioning to accommodate different product sizes without adding external stopper blocks.
Product Changeover
Quickly adjust the cylinder's effective stroke on the packaging line when switching to a new package format, minimizing downtime and avoiding cylinder replacement.
Corrosive Setup Adjustments
Leverage the SUS304 stainless steel rod and precise stroke adjustment for machining environments where moisture is present and positional tuning is frequently required.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-75S the Right Cylinder?
Choose this adjustable-stroke model when your application requires variable end-position tuning at commissioning or during product changeover, saving the downtime of physically swapping a fixed-stroke SAI cylinder. If you need higher force, stepping up to a 50 mm bore yields 982 N of push force at 0.5 MPa; if less force is needed, a 32 mm bore provides 402 N.
Because the nominal stroke is 150 mm, the 16 mm rod and M12x1.25 thread handle standard side loads adequately, though long unsupported strokes always require an external guide. Remember that the rear adjuster acts only as a mechanical stop and does not hold the load without live air—use an SAIL or BSAI cylinder for fail-safe load holding. This unit is dimensionally interchangeable per ISO 15552, featuring a PT tapered port thread.
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 SAIJ40BX150-75S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 75 mm, creating a usable travel window of 75 to 150 mm. This allows you to set the exact end position at commissioning without changing the cylinder itself.
At 0.5 MPa operating pressure, the SAIJ40X150-75-S provides 628 N of push force and 528 N of pull force. At its maximum rated pressure of 1.0 MPa, it can deliver up to 128 kgf.
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