Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S
The AirTAC SAIJ32X280-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 280 mm stroke that can be fine-tuned backward by up to 20 mm, creating a precise 260-280 mm usable travel window. Delivering 402 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads.
This adjustable model allows operators to dial in exact end positions at commissioning or during product changeover without swapping the cylinder or adding external stops. It includes a magnet for position sensing with CMSE reed or DMSE electronic switches, and its extruded aluminum barrel features sensor grooves on both sides for flexible mounting.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 280 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 SAIJ32BX280-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×280 | 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 SAIJ32BX280-20S Is Used
Commissioning Fine-Tuning
Dial in the exact 260-280 mm end position during machine setup without machining new hard stops or altering the pneumatic plumbing.
Product Changeover
Quickly adjust the retract stroke length on packaging lines when handling slightly different package sizes on the same conveyor.
Sensor Calibration
Leverage the -S magnet and DMSE electronic sensors to confirm the adjusted end position is reached reliably before triggering the next motion.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of thrust at 0.5 MPa and a variable end-stop within the 260-280 mm range. If your setup demands higher force, stepping up to the 40 mm bore yields 628 N at the same pressure. The rear adjuster acts purely as a mechanical travel stop and does not hold the load without live air; for true load-holding, consider an SAIL or BSAI cylinder. To match this ISO 15552 replacement exactly, verify the 280 mm stroke, 20 mm adjustment, PT G1/8 port, and the -S magnet.
Because this stroke is 280 mm, the 12 mm diameter piston rod and M10x1.25 rod thread should be guided externally to prevent excessive side-loading on the gland bearings.
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 SAIJ32BX280-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum pressure of 1.0 MPa, it can deliver up to 82 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 280 mm down to 260 mm. This creates a 260-280 mm travel window for fine-tuning without replacing the cylinder.
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