Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20 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 SAIJ32BX280-20
The AirTAC SAIJ32X280-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 260-280 mm usable travel window, allowing you to dial in the exact retract position during commissioning without adding external stops. In the 32 mm bore class, it delivers 402 N of push force at 0.5 MPa and uses a G1/8 port.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches if a magnet is added later. The rear adjuster acts strictly as a travel stop for deceleration, not a lock, so live air is required to hold the load.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20 |
|---|---|
| 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 SAIJ32BX280-20
| 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 SAIJ32BX280-20 Is Used
Machine Setup & Changeover
Dial in the exact retract position within the 260-280 mm window during line changeovers without physically swapping the cylinder or adding external stopper blocks.
Variable End-Stop Positioning
Perfect for light-duty assembly tasks requiring 402 N of push force where the final end-position needs precise mechanical tuning to accommodate part tolerances.
Corrosive Environment Testing
The SUS304 stainless steel rod withstands humid or mildly corrosive environments while providing repeatable positioning for laboratory or washdown-adjacent testing rigs.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX280-20 the Right Cylinder?
Choose this 32 mm bore cylinder when your application requires 402 N of thrust at 0.5 MPa and precise end-position tuning. If you need to step up the force, the neighbouring 40 mm bore provides 628 N of push force at the same pressure. The adjustable stroke is ideal for product changeovers on a line, letting you fine-tune the 260-280 mm travel window on the fly rather than swapping to a fixed-stroke SAI cylinder.
Because the stroke is 280 mm, the 12 mm diameter rod has an unsupported length that makes it susceptible to side loads; always use an external guide to prevent binding. For load-holding without continuous air pressure, this cylinder is insufficient—select an SAIL air-released lock or BSAI clamp-lock cylinder instead. To match this ISO 15552 footprint, specify the 32 mm bore, 280 mm stroke, 20 mm adjustment, PT G1/8 port, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mountings.
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 SAIJ32BX280-20 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 1.0 MPa pressure, it delivers up to 82 kgf.
The rear adjuster screw lets you mechanically shorten the effective stroke by up to 20 mm from the 280 mm nominal length, creating a 260-280 mm travel window. It acts as a travel stop to tune end positions and is not a lock; live air is needed to hold the load.
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