Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 425mm 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
- Stroke425 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S
The AirTAC SAIJ32X425-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 405 to 425 mm. Delivering 402 N of push force at 0.5 MPa, it utilizes a PT tapered port thread and a SUS420J2 stainless steel rod for enhanced durability against moisture. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet (-S) supports precise position detection.
Unlike a fixed-stroke SAI cylinder, this model uses an external adjusting screw at the rear to fine-tune the retract end position during commissioning without adding external stops. The adjuster functions strictly as a travel stop and does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 425 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 SAIJ32AX425-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×425 | 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 SAIJ32AX425-20S Is Used
Machine Changeover
Dial in the 405-425 mm retract position during product size changes without replacing the cylinder or adding mechanical shims.
Variable End Stops
Fine-tune the travel end on packaging lines to accommodate different carton depths using the rear adjusting screw.
Sensor-Guided Positioning
Leverage the integrated magnet with DMSE electronic sensors to confirm the adjusted end position during automated setups.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20S the Right Cylinder?
Select this 32 mm bore when an application requires 402 N of thrust at 0.5 MPa with a variable end-stop, stepping up from a smaller unit or down from a 40 mm bore that yields 628 N. The adjustable stroke is ideal for product-size changeovers on a line, allowing operators to dial in the exact 405-425 mm travel without swapping cylinders. When matching an ISO 15552 replacement, verify the 425 mm stroke, 20 mm adjustment range, PT port thread, and the -S magnet requirement.
Because the 425 mm stroke is relatively long for a 32 mm bore, the 12 mm rod and M10x1.25 thread require external guiding to prevent excessive side-loading and premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Position sensing is handled by AirTAC CMSE reed or DMSE electronic switches.
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 SAIJ32AX425-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. The maximum thrust is 82 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 425 mm stroke by up to 20 mm, creating a 405-425 mm travel window. It acts as a mechanical stop and does not lock the load without air pressure.
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