Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 550mm 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
- Stroke550 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S
The AirTAC SAIJ32X550-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 530 to 550 mm, allowing you to dial back the nominal stroke by up to 20 mm during commissioning without adding external stops. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and carries a -S magnet for position sensing. It supports AirTAC CMSE reed and DMSE electronic solid-state switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. Fluid supply arrives via PT tapered G1/8 ports.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 550 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 SAIJ32BX550-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×550 | 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 SAIJ32BX550-20S Is Used
Variable End-Position Tuning
Dial in the exact 530 to 550 mm travel distance during machine commissioning to accommodate slightly different product lengths without swapping out the entire cylinder.
Product Changeover Stops
Quickly adjust the retract stop on a packaging line conveyor when switching to a new carton size, using the 20 mm trim range to fine-tune the pusher distance.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for light-duty pushing tasks in food processing or chemical handling areas where standard carbon steel rods would pit or rust.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-20S the Right Cylinder?
Choose this 32 mm bore adjustable-stroke model when an application requires precise end-position tuning for product changeovers, rather than installing a fixed-stroke SAI cylinder. If your setup needs greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Because the 550 mm stroke is long relative to the 12 mm rod diameter, adding an external guide rail is highly recommended to prevent excessive side-loading and premature wear.
For ISO 15552 dimensional interchangeability, match the 32 mm bore, 550 mm stroke, 20 mm adjustment, PT G1/8 port thread, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for true fail-safe load holding, consider the SAIL or BSAI series instead.
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 SAIJ32BX550-20S FAQ
The rear adjuster screw lets you shorten the effective travel from 550 mm down to 530 mm. It acts as a physical stop that fine-tunes the retract end position at commissioning, but it is not a lock and will not hold the load without continuous air pressure.
At 0.5 MPa operating pressure, the 32 mm bore generates 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can output up to 82 kgf.
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