Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 140mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke140 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S
The AirTAC SAIJ32X140-20-S is a double-acting, adjustable-stroke ISO 15552 profile cylinder with a 32 mm bore and a 140 mm nominal stroke. An integrated rear stopper screw allows you to trim the effective travel back by up to 20 mm, creating a precise 120-140 mm usable window. This on-machine fine-tuning eliminates the need to swap out the barrel or bolt on external stops during commissioning. Delivering 402 N of push force at 0.5 MPa, it is built with a corrosion-resistant SUS304 stainless steel rod and includes a magnet for position sensing.
The extruded aluminum barrel features sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a mechanical travel stop to set the end position; it does not lock or hold the load without live air pressure. For applications requiring true load-holding, a SAIL pneumatic lock or an external rod lock is required. This SAIJ model uses PT tapered ports (G1/8) and provides a standard 27 mm cushion at both ends to decelerate the moving payload smoothly.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×140 | 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 Adjustable Cylinder SAIJ32 SAIJ32BX140-20S Is Used
Product Changeover Dial-In
Quickly adjust the 120-140 mm travel window during product size changes on a packaging line, using the rear stopper to set new end positions without replacing the cylinder.
End-Stop Commissioning
Fine-tune the final retract position during machine commissioning to achieve exact clamping distances, preventing over-travel without adding external mechanical stops.
Sensor-Driven Assembly
Leverage the integrated magnet and dual sensor grooves to mount CMSE or DMSE switches, confirming the adjusted end-of-stroke position in automated assembly processes.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX140-20S the Right Cylinder?
Choose this 32 mm bore cylinder when you need 402 N of push force at 0.5 MPa and require exact end-position tuning without swapping hardware. If your application demands higher thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, if you need less force and a shorter footprint, you would step down to a smaller bore size. The SAIJ32X140-20-S is selected over a fixed-stroke SAI when a machine setup requires a variable end-stop to accommodate product changeovers or to dial in a precise clamping distance.
This configuration includes a SUS304 stainless steel rod, a magnet for CMSE/DMSE sensors, and PT tapered ports (G1/8). It is dimensionally interchangeable per ISO 15552 mounting-interface dimensions. The available mounting set for SAIJ includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR. Because the 140 mm stroke is under 300 mm, side-load concerns are minimal, though an external guide is still recommended for heavy lateral loads. Operating speed ranges from 30 to 800 mm/s.
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 Adjustable Cylinder SAIJ32 SAIJ32BX140-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 82 kgf.
The rear adjuster screw acts as a mechanical stop that allows you to shorten the 140 mm nominal stroke by up to 20 mm. This creates a usable travel window of 120 to 140 mm, enabling precise end-position tuning without replacing the cylinder.
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