Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30
The AirTAC SAIJ32X120-30 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 90 to 120 mm, allowing you to dial back the nominal 120 mm stroke by up to 30 mm during machine commissioning without adding external stops. Operating at 0.5 MPa, it delivers 402 N of push force and 345 N of pull force, making it well-suited for compact, lower-force positioning tasks.
This variant uses a SUS304 stainless steel rod (code B) for enhanced corrosion resistance and carries PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning electronic DMSE or reed CMSE switches cannot be fitted without a magnet option. The rear adjuster acts purely as a mechanical travel stop, so live air pressure is always required to hold the load.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 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 SAIJ32BX120-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 SAIJ32BX120-30 Is Used
Machine Changeover
Fine-tune the 90-120 mm travel window during product size changeovers to set precise end-stops without physically replacing the cylinder.
Assembly Positioning
Utilize the 402 N push force to move lightweight jigs into exact alignment, relying on the rear screw for final position calibration.
End-Stop Calibration
Dial in the exact retract distance during machine commissioning, compensating for mechanical tolerance stacks without adding external stops.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX120-30 the Right Cylinder?
Choose this 32 mm bore when your application requires the exact force class of 402 N push at 0.5 MPa; stepping down is not an option for ISO 15552 standard bores, but stepping up to a 40 mm bore yields 628 N if your payload increases. The adjustable stroke is ideal for product changeovers where the exact end-of-travel position varies slightly, saving you from swapping out a fixed-stroke SAI cylinder. Mounting options include the reduced SAIJ set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since this unit lacks a lock, use a SAIL or BSAI cylinder if you need fail-safe load holding 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 SAIJ32BX120-30 FAQ
The nominal stroke is 120 mm, but the rear adjuster allows you to shorten the effective travel by up to 30 mm, creating a usable stroke window of 90 to 120 mm for precise end-position tuning.
No, the rear adjuster is a mechanical stop that sets the travel end, not a lock. The cylinder requires live air pressure to maintain position; for fail-safe load holding, consider the SAIL or BSAI series.
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