Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-75S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-75S 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 SAIJ32BX125-75S
The AirTAC SAIJ32X125-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 125 mm stroke that can be dialed back by up to 75 mm, yielding a highly versatile 50-125 mm usable travel window for precise end-position tuning. Delivering 402 N of push force at 0.5 MPa, this compact unit is tailored for applications requiring exacting setup flexibility.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and operates with a PT tapered port. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) directly supports AirTAC CMSE reed and DMSE electronic solid-state switches without external modifications.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-75S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-75S |
|---|---|
| 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 SAIJ32BX125-75S
| 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 SAIJ32BX125-75S Is Used
Machine Changeover
Dial in the 50-125 mm travel window rapidly when switching between product sizes on a packaging line, avoiding physical cylinder swaps.
Commissioning Calibration
Fine-tune the exact retract end-position during initial setup without machining hard stops, leveraging the 75 mm rear adjustment screw.
Variable End Stops
Establish precise mechanical limits for delicate positioning tasks, relying on the rear stopper to set the deceleration point.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-75S the Right Cylinder?
Select this 32 mm bore when you need up to 402 N of push force at 0.5 MPa with on-the-fly end-stop tuning. If your application requires stepping up force, the neighboring 40 mm bore yields 628 N push at 0.5 MPa. Choose this adjustable-stroke SAIJ model over a fixed SAI cylinder when you need to fine-tune the retract position during machine commissioning or product changeovers without adding external stops. For any load-holding requirements, note that the rear adjuster is strictly a travel stop, not a lock; you would need an external pilot-operated check valve or a SAIL lock cylinder for dead-air holding. To match this exact ISO 15552 replacement, specify: 32 mm bore, 125 mm stroke, 75 mm adjustment, PT port, SUS304 (B) rod, and the -S magnet.
Because this cylinder features a 125 mm stroke, it remains well within standard side-load limits for a 12 mm rod diameter, though long unsupported strokes should always utilize an external guide. The SAIJ series utilizes a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some other 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 SAIJ32BX125-75S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from its 125 mm nominal length down to as little as 50 mm. It only sets the travel end and does not lock the load without live air pressure.
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