Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20
The AirTAC SAIJ32X180-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 180 mm nominal stroke to a 160 mm minimum. This creates a 160-180 mm usable window, letting you dial in the retract end-position at commissioning without adding external stops. In the compact 32 mm bore class, it delivers 402 N of push force at 0.5 MPa and 563 N at 0.7 MPa.
This unit is built with 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, allowing you to mount CMSE reed or DMSE electronic switches if needed. The rear adjuster acts purely as a travel stop to set deceleration and end-position, meaning it will not hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 180 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 SAIJ32BX180-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×180 | 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 SAIJ32BX180-20 Is Used
Machine Changeover
Dial in the 160-180 mm travel window during product size transitions to set new retract positions without replacing the cylinder.
End-Stop Tuning
Fine-tune the final retract position during initial commissioning to absorb mechanical tolerances and achieve precise placement.
Variable Positioning
Adjust the rear stopper to vary the end-of-stroke contact point for flexible sorting or gating on automated lines.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX180-20 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or frequent product changeovers that would otherwise demand physically swapping out a fixed-stroke SAI unit. If your application needs higher force, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. To replace an ISO 15552 cylinder, match the 32 mm bore, 180 mm stroke, 20 mm adjustment, PT port thread, and standard mounting interface.
Because the 180 mm stroke is relatively short, side-load stress is minimal, but the 12 mm rod and M10x1.25 thread still require external guidance for heavy lateral loads. Remember that the rear adjuster is a stop, not a lock; for true load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ32BX180-20 FAQ
The 32 mm bore provides 402 N of push force and 345 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster screw lets you shorten the 180 mm nominal stroke by up to 20 mm, creating a 160-180 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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