Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S
The AirTAC SAIJ32X45-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 25-45 mm from the 45 mm nominal stroke. Delivering 402 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors.
The rear adjustment screw acts purely as a travel stop for end-position tuning at commissioning; it does not lock or hold the load without live air pressure. This compact 32 mm bore unit uses a G1/8 PT port and offers a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting heavy pivot options.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 45 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 SAIJ32BX45-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 SAIJ32BX45-20S Is Used
Machine Setup Changeover
Dial in the exact 25-45 mm travel window during product size changeovers without physically replacing the cylinder or adding shims.
Variable End-Stop Positioning
Fine-tune the retract end-position on small actuators to perfect gripping or pressing distances on the fly.
Lab Automation Testing
The SUS304 rod provides corrosion resistance for lab environments while the adjustable stroke accommodates varying test sample sizes.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20S the Right Cylinder?
Choose this 32 mm bore when you need 402 N push force at 0.5 MPa and precise variable end-stops during machine setup or product changeover, avoiding the need to swap cylinders or add external stops. If your application requires less force, stepping down to a 25 mm bore is an option, while moving up to a 40 mm bore yields 628 N for heavier loads.
For load-holding without continuous air pressure, this plain adjuster is insufficient; you would need an AirTAC SAIL pneumatic lock, BSAI clamp-lock, or an external rod lock. This SAIJ32X45-20-S configuration includes a PT tapered port thread, a SUS304 stainless steel rod, and an -S magnet for sensor compatibility.
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 SAIJ32BX45-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
The rear adjuster screw lets you shorten the 45 mm nominal stroke by up to 20 mm, creating a usable travel window of 25-45 mm. This stopper only sets the end position and does not hold the load without air pressure.
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