Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 450mm 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
- Stroke450 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S
The AirTAC SAIJ32X450-20-S is a double-acting, adjustable-stroke ISO 15552 profile cylinder featuring a 32 mm bore and a 450 mm stroke. An integrated rear adjusting screw allows you to shorten the effective travel by up to 20 mm, creating a precise 430-450 mm usable stroke window for exact end-position tuning during commissioning. Delivering 402 N of push force at 0.5 MPa, it is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE and DMSE sensors.
This model utilizes a PT tapered port thread and achieves a standard maximum stroke length for its bore size. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting. Because the rear adjuster acts purely as a travel stop and the air cushions manage deceleration, this cylinder cannot hold a load without live air pressure. For true load-holding without continuous pressure, consider the SAIL or BSAI series.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 450 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 SAIJ32BX450-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×450 | 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 SAIJ32BX450-20S Is Used
Machine Setup Tuning
Dial in the exact 430-450 mm travel distance during initial commissioning to perfectly align tooling without machining hard stops.
Product Changeover
Quickly adjust the end-stop position by up to 20 mm on a production line when switching between slightly different product sizes.
Variable End Stops
Use the rear adjusting screw to fine-tune the retract position for precision assembly tasks requiring exacting linear placement.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX450-20S the Right Cylinder?
Choose this 32 mm bore cylinder when your application requires 402 N of push force at 0.5 MPa and a highly specific end-of-stroke position that falls within the 430-450 mm range. The adjustable rear stopper allows you to dial in the exact travel distance during machine setup or product changeover without swapping out the entire cylinder or adding external physical stops. If your application requires less force, stepping down is not an option within this bore size, but stepping up to a 40 mm bore provides 628 N of push force at 0.5 MPa for heavier loads.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 450 mm stroke, 20 mm adjustment range, PT port thread, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR configurations. Because the 450 mm stroke is relatively long for a 32 mm bore, the 12 mm diameter rod and M10x1.25 thread can only handle limited side loads. You must use an external guide rail to prevent rod binding and premature seal wear.
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 SAIJ32BX450-20S FAQ
The rear of the cylinder features an external adjusting screw that acts as a mechanical stop. It allows you to shorten the nominal 450 mm stroke by up to 20 mm, giving you an adjustable usable travel window of 430 to 450 mm.
At a 0.5 MPa operating pressure, this double-acting cylinder provides 402 N of push force and 345 N of pull force. It can achieve up to 724 N of push force at 0.7 MPa.
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