Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S
The AirTAC SAIJ32X125-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 105-125 mm usable travel window, letting you trim the nominal 125 mm stroke back by up to 20 mm during commissioning without adding external stops. Delivering 402 N of push force at 0.5 MPa, it suits light-duty positioning tasks.
This variant uses a SUS304 stainless steel rod for corrosion resistance and includes a magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic sensors mounted in the dual-side sensor grooves. The PT tapered ports and variable air cushions at both ends ensure reliable deceleration, though the adjuster acts only as a travel stop, not a load lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 SAIJ32BX125-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SAIJ32BX125-20S Is Used
Machine Changeover
Dial in the exact 105-125 mm end position when switching product sizes on a packaging line, avoiding physical cylinder swaps.
Assembly Calibration
Fine-tune the rear stopper during commissioning to perfect part pressing depth without machining custom external spacers.
Light Load Routing
Route small components accurately using the 402 N thrust class and SUS304 rod, adjusting travel as process parameters evolve.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-20S the Right Cylinder?
Choose this 32 mm bore when a 402 N thrust class at 0.5 MPa fits your load, stepping up to the 40 mm bore (628 N) only if you need higher push force. The adjustable 20 mm end-stop is ideal for fine-tuning machine setups or product changeovers, offering flexibility a fixed-stroke SAI cylinder cannot match. To match this ISO 15552 interchangeable replacement, specify: 32x125 bore/stroke, 20 mm adjustment, PT G1/8 ports, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and a -S magnet. Because the rear screw is a stop rather than a lock, use a SAIL or BSAI cylinder if you must hold a load without live air pressure.
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 SAIJ32BX125-20S FAQ
The rear adjuster screw lets you shorten the effective travel from the 125 mm nominal stroke down to 105 mm. This creates a 20 mm tuning window for setting exact end positions without swapping the cylinder.
At 0.5 MPa operating pressure, the 32 mm bore generates 402 N of push force and 345 N of pull force. It can reach up to 724 N push force at 0.9 MPa.
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