Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-30S 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 SAIJ40BX150-30S
The AirTAC SAIJ40X150-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 150 mm stroke that can be dialed back by up to 30 mm, giving you a precise 120-150 mm usable travel window for fine-tuning end positions during commissioning. Delivering 628 N of push force at 0.5 MPa, it fits mid-range automation tasks perfectly.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and carries a built-in magnet for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. You can set the travel end without adding external stops, though the adjuster acts strictly as a stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-30S |
|---|---|
| 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 SAIJ40BX150-30S
| 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 SAIJ40BX150-30S Is Used
Machine Changeover
Dial in the 120-150 mm travel window during product size changes without physically replacing the actuator or adding shims.
Variable End-Stop Setup
Use the rear screw to establish a precise retract position at commissioning, preventing hard mechanical crashes.
Sorting Diverter
Provides 628 N of push force at 0.5 MPa to reliably divert packages, with the SUS304 rod offering corrosion resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX150-30S the Right Cylinder?
Choose this 40 mm bore when a 32 mm bore (402 N push at 0.5 MPa) lacks thrust, but a 63 mm bore (1559 N) is physically oversized. The 30 mm adjustment window is ideal for product changeovers on a line, letting you shift the retract end-position without swapping the cylinder. For load-holding without continuous air pressure, you would need a SAIL pneumatic lock or a BSAI clamp-lock cylinder, as the SAIJ adjuster is only a travel stop.
To match this ISO 15552 interchangeable cylinder, confirm the 150 mm nominal stroke, 30 mm adjustment range, PT tapered port threads, and the -S magnet option. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Since the 150 mm stroke is below the 300 mm threshold, side-load stress is moderate, but the 16 mm rod still requires external guidance for heavy lateral loads.
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 SAIJ40BX150-30S FAQ
The rear adjuster acts as a mechanical stop that shortens the retract travel. For this model, you can trim the 150 mm nominal stroke back by up to 30 mm, creating a 120-150 mm usable window. It does not lock the load without live air pressure.
At 0.5 MPa, it provides 628 N of push force and 528 N of pull force. The -S suffix indicates a built-in magnet compatible with AirTAC CMSE reed and DMSE electronic sensors mounted in the dual barrel grooves.
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