Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20
The AirTAC SAIJ32X250-20 is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the nominal 250 mm travel to a precise 230-250 mm window. It delivers 402 N of push force at 0.5 MPa and features a SUS420J2 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses PT tapered G1/8 ports and achieves a standard 27 mm cushion length at both ends to decelerate the load smoothly. The rear stopper screw acts purely as a travel end-setter for commissioning or product changeovers, not a lock, so live air pressure is always required to hold the load. For position-holding without continuous pressure, an external SAIL or BSAI locking cylinder is necessary.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAIJ32AX250-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SAIJ32AX250-20 Is Used
Machine Changeover
Fine-tune the 230-250 mm end-stop during product size transitions without physically swapping cylinders or adding external stopper blocks.
Component Seating
Dial in the exact retraction point during assembly line commissioning to guarantee consistent part seating and prevent overtravel damage.
Adjustable Clamping
Vary the clamping reach by up to 20 mm to accommodate different workpiece thicknesses while maintaining reliable 402 N force.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-20 the Right Cylinder?
Choose this 32 mm bore when your application requires around 402 N of thrust at 0.5 MPa, or step down if you need less force. The adjustable stroke is selected over a fixed SAI cylinder when you need fine end-position tuning at commissioning or frequent product-size changeovers without swapping physical stops. Since the stroke is 250 mm, an external guide is recommended to prevent excessive side-loading on the rod.
To replace this ISO 15552 cylinder accurately, match the 32 mm bore, 250 mm stroke, 20 mm adjustment range, PT G1/8 port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This specific SKU omits the magnet, so it will not work with CMSE or DMSE sensors; you must specify the -S option if electronic or reed switch sensing is required.
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 SAIJ32AX250-20 FAQ
At a 0.5 MPa operating pressure, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can output up to 82 kgf.
The external rear adjusting screw allows you to shorten the effective travel from the 250 mm nominal stroke down to a minimum of 230 mm. This creates a 20 mm adjustable window for setting the exact end position without replacing the cylinder.
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