Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S
The AirTAC SAIJ32X475-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 455 to 475 mm usable travel window, allowing you to dial back the nominal 475 mm stroke by up to 20 mm during commissioning. Delivering 402 N of push force at 0.5 MPa, this 32 mm bore unit is equipped with a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port.
The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports electronic DMSE solid-state and CMSE reed switches. The rear adjuster acts purely as a mechanical stop to set the end position; it does not hold the load without live air pressure. For load-holding applications, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 475 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 SAIJ32BX475-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×475 | 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 SAIJ32BX475-20S Is Used
Machine Commissioning
Fine-tune the 455-475 mm travel window during initial setup to dial in exact end positions without adding external stops.
Product Changeover
Quickly adjust the end-stop by up to 20 mm on a packaging line when switching between product sizes.
Variable End Stops
Use the rear mechanical stopper to set precise retract positions for delicate assembly tasks.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX475-20S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI cylinder when your machine setup requires variable end-stops or fine end-position tuning without swapping components. If your application demands greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Because the 475 mm stroke is relatively long, an external guide is recommended to prevent side-loading on the 12 mm rod. To replace an ISO 15552 cylinder, match the 32 mm bore, 475 mm stroke, 20 mm adjustment, PT G1/8 port, and -S magnet.
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 SAIJ32BX475-20S FAQ
At 0.5 MPa it provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster allows you to shorten the 475 mm nominal stroke by up to 20 mm, creating a 455 to 475 mm usable travel window. The adjuster is a stop, not a lock.
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