Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S
The AirTAC SAIJ32X155-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 135-155 mm usable travel window, allowing you to trim the effective stroke by up to 20 mm during commissioning without swapping the cylinder. Delivering 402 N of push force at 0.5 MPa, it fits compact automation setups requiring precise end-position tuning.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the PT G1/8 port ensures straightforward pneumatic integration.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 155 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 SAIJ32BX155-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×155 | 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 SAIJ32BX155-20S Is Used
Precision End-Stop Tuning
Dial in the exact 135-155 mm travel distance during machine commissioning to perfect product placement without adding external stops.
Product Size Changeover
Quickly adjust the rear stopper by up to 20 mm to accommodate varying material lengths on a conveyor without changing the cylinder.
Corrosion-Resistant Actuation
Utilize the SUS304 stainless steel rod in light manufacturing environments where moisture or minor chemicals are present.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX155-20S the Right Cylinder?
Choose this 32 mm bore when an application demands 402 N push force at 0.5 MPa with exact end-stop flexibility. If your setup requires less force, stepping down is not an option below 32 mm in this series, but if you need greater thrust, the 40 mm bore offers 628 N at 0.5 MPa. The adjustable stroke is ideal for product changeovers on a line, functioning as a travel stop rather than a lock. For load-holding without live air pressure, consider the SAIL or BSAI series. To match this ISO 15552 replacement exactly, specify the 155 mm stroke, 20 mm adjustment, PT G1/8 port, SUS304 rod, and -S magnet.
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 SAIJ32BX155-20S 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 acts as a mechanical stop, allowing you to shorten the nominal 155 mm stroke by up to 20 mm, creating a 135-155 mm travel window. It only sets the end position and does not lock the load without live air.
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