Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-40S 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 SAIJ32BX250-40S
The AirTAC SAIJ32X250-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 250 mm stroke that can be fine-tuned backward by up to 40 mm, creating a usable travel window of 210 to 250 mm. This allows precise end-position calibration during commissioning without swapping out the cylinder. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This specific SKU features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G1/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet enables position detection with AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, meaning it will not hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-40S |
|---|---|
| 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 SAIJ32BX250-40S
| 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 SAIJ32BX250-40S Is Used
Changeover Calibration
Dial in the exact 210 to 250 mm end-stop during machine changeovers without adding external shims or swapping cylinders.
Variable End Positioning
Fine-tune the retract stroke on packaging equipment to accommodate different product sizes on the fly.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod in light-duty manufacturing environments where moisture is present.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-40S the Right Cylinder?
Choose this 32 mm bore adjustable cylinder when an application requires exact end-position tuning or frequent product-size changeovers, stepping up from smaller units if you need more than the 402 N push force available here. If your setup demands load-holding without continuous air pressure, a standard SAIJ is insufficient; you should look at the SAIL pneumatic lock or BSAI clamp-lock series instead. To replace an ISO 15552 cylinder, match the 32 mm bore, 250 mm stroke, 40 mm adjustment range, PT G1/8 port, and -S magnet.
Because this unit features a 250 mm stroke, the 12 mm diameter rod and M10x1.25 rod thread provide a robust interface, but an external guide is still recommended to prevent excessive side-loading on long unsupported travels. The mounting hardware utilizes the reduced SAIJ subset, including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard lines.
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 SAIJ32BX250-40S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 250 mm nominal stroke down to 210 mm. This provides a 40 mm tuning window for precise positioning at commissioning, but it does not lock the load without live air pressure.
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