Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20 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 SAIJ32AX425-20
The AirTAC SAIJ32X425-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 405-425mm usable travel window from its 425mm nominal stroke. Delivering 402N of push force at 0.5 MPa, it uses a PT tapered G1/8 port and a 12mm SUS420J2 stainless steel rod (material code A) for improved corrosion resistance.
This extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear adjuster functions strictly as a mechanical stop to dial in end positions during commissioning without adding external stops; it does not lock the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20 |
|---|---|
| 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 SAIJ32AX425-20
| 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 SAIJ32AX425-20 Is Used
Machine Setup Tuning
Dial in the exact 405-425mm end-of-stroke position during initial machine commissioning without fabricating custom external stopper blocks.
Product Changeover
Quickly adjust the retract stop to accommodate varying package lengths on a packaging line, utilizing the 20mm adjustment range.
Variable End Stops
Fine-tune the final retract position on testing fixtures where a fixed 425mm stroke would overshoot delicate components.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX425-20 the Right Cylinder?
Choose this 32mm bore when an application requires precise end-position tuning on a long 425mm stroke, stepping up from a smaller bore if the 402N thrust at 0.5 MPa is insufficient. Because the stroke exceeds 300mm, the 12mm rod and M10x1.25 thread should be paired with an external guide to prevent excessive side-loading and premature wear.
Select this adjustable SAIJ variant over a fixed SAI cylinder when you need variable end-stops for product changeovers. For load-holding without continuous air pressure, integrate an external pilot-operated check valve or select the SAIL or BSAI series instead, as the SAIJ adjuster is only a travel stop. To match ISO 15552 interchangeability, specify the 32mm bore, 425mm stroke, 20mm adjustment, PT port, and the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting styles.
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 SAIJ32AX425-20 FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. It can deliver up to 724N of push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that shortens the 425mm nominal stroke by up to 20mm, creating a 405-425mm usable travel window. It allows fine-tuning of the retract end-position without swapping the cylinder.
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