Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S
The AirTAC SAIJ32X40-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 402N of push force at 0.5 MPa and features a 20mm adjustment range, creating a usable travel window of 20-40mm for precise end-position tuning during commissioning. The SUS420J2 stainless steel rod (material code A) provides enhanced corrosion resistance, and the integrated magnet enables position sensing.
This 32mm bore pneumatic actuator uses a PT G1/8 port and includes variable air cushions at both ends to decelerate the load smoothly. The rear adjuster acts purely as a mechanical stop to set the retract distance and does not hold the load without live air pressure. For load-holding requirements without continuous air, consider an external rod lock or the related SAIL series.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 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 SAIJ32AX40-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 SAIJ32AX40-20S Is Used
Precision End-Stop Tuning
Dial in the exact retract distance within the 20-40mm window during machine commissioning without adding external stopper blocks.
Product Size Changeover
Quickly adjust the stroke by up to 20mm on packaging lines when switching between different product sizes or formats.
Sensor-Calibrated Positioning
Leverage the integrated magnet with CMSE or DMSE switches to confirm the adjusted end-position in automated assembly tasks.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX40-20S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or product-size changeovers without physically swapping the cylinder. The 20mm adjustment window on a 40mm nominal stroke allows for highly granular tuning at commissioning. If your application requires less force, stepping down is not an option below 32mm, but stepping up to a 40mm bore yields 628N of push force at 0.5 MPa.
This cylinder is dimensionally interchangeable per ISO 15552 and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state sensors. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The 12mm rod and M10x1.25 thread handle moderate side loads, though external guides are always recommended for optimal longevity.
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 SAIJ32AX40-20S FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. It can reach a maximum push force of 724N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective stroke by up to 20mm, creating a usable travel window of 20-40mm. The adjuster functions as a mechanical stop to fine-tune the end position and does not lock the load without continuous air pressure.
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