Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-50 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 SAIJ32AX280-50
The AirTAC SAIJ32X280-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 230 to 280 mm, allowing you to dial back the nominal stroke by up to 50 mm during commissioning. This bore size delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it well-suited for lighter-duty positioning tasks.
This unit is configured with a SUS420J2 stainless steel rod for improved corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for straightforward switch mounting. Keep in mind the rear adjuster acts strictly as a travel stop; it does not hold the load without live air pressure, so a SAIL or BSAI lock is needed for position holding.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-50 |
|---|---|
| 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 SAIJ32AX280-50
| 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 SAIJ32AX280-50 Is Used
Machine Changeover
Dial in the 230-280 mm travel window during product size transitions without adding external physical stops to the fixture.
End-Position Tuning
Fine-tune the retract end position at commissioning to perfect the timing of lighter-duty 32 mm bore assembly routines.
Variable Diverter Stroke
Adjust the actuation length on the fly to accommodate different package sizes moving along a conveyor line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX280-50 the Right Cylinder?
Choose this adjustable model over a fixed-stroke SAI when your machine setup requires variable end-stops or product-size changeovers without physically swapping the cylinder. If your application requires greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Because the 280 mm stroke is relatively long for the 12 mm rod diameter, external guide rails should be used to prevent excessive side-loading and rod deflection.
When specifying an ISO 15552 replacement, match the 32 mm bore, 280 mm stroke, 50 mm adjustment range, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This configuration omits the FB, CA, CB, and CR mounts, and ships without a magnet (-S) for sensor detection.
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 SAIJ32AX280-50 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
A rear adjusting screw allows you to shorten the effective stroke by up to 50 mm. This creates a usable travel window between 230 and 280 mm, acting as a hard stop to decelerate the load at the retract end.
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