Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-50 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 SAIJ32AX250-50
The AirTAC SAIJ32X250-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window from 200 to 250 mm without adding external stops. It 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. The unit features a SUS420J2 stainless steel rod for improved corrosion resistance compared to standard carbon steel.
This model uses a PT tapered G1/8 port and offers variable air cushioning at both ends to decelerate the moving load. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount position switches if needed later, even though this specific SKU is specified without a magnet. The rear stopper screw sets the retract end position but does not function as a lock, meaning the cylinder cannot hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-50 |
|---|---|
| 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 SAIJ32AX250-50
| 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 SAIJ32AX250-50 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 200 and 250 mm during machine setup to accommodate varying workpiece sizes without changing the cylinder.
Product Changeover Diverter
Adjust the stroke on the fly when switching the conveyor line to a different package length, ensuring the diverter arm hits the correct new end position.
Sensor Mounting Flexibility
Utilize the dual sensor grooves on the extruded barrel to mount reed or electronic switches exactly where needed along the adjustable travel range.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-50 the Right Cylinder?
Choose this 32 mm bore when your application requires the 402 N push force at 0.5 MPa, but you need flexibility in the end-of-stroke position. If your process demands higher clamping or thrust, stepping up to the 40 mm bore yields 628 N of push force at the same pressure. The 50 mm adjustment range is ideal for product changeovers where multiple parts run on the same line, letting you dial in the exact 200 to 250 mm travel during commissioning rather than swapping out a fixed-stroke SAI cylinder.
Because the 250 mm stroke is relatively long for a 32 mm bore, the 12 mm rod is more susceptible to side-loading and bending; always guide the load externally to prevent premature seal wear. For any load-holding requirements without continuous air pressure, this standard SAIJ adjuster will not suffice—consider an SAIL pneumatic lock or an external rod lock instead. To replace an ISO 15552 cylinder, match the 32 mm bore, 250 mm nominal stroke, 50 mm adjustment, PT G1/8 port, and your required mounting bracket from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ32AX250-50 FAQ
The rear adjuster screw acts as a mechanical stop that shortens the cylinder's effective stroke. On this model, you can trim the nominal 250 mm stroke back by up to 50 mm, creating a usable travel window of 200 to 250 mm for fine-tuning the end position at commissioning.
At a 0.5 MPa operating pressure, the SAIJ32X250-50 generates 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
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