Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S
The AirTAC SAIJ32X55-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 402N of push force at 0.5 MPa and provides a usable travel window of 35 to 55 mm, letting you dial back the nominal 55 mm stroke by up to 20 mm during machine commissioning.
This variant includes a SUS304 stainless steel rod for corrosion resistance and a -S magnet for position sensing with CMSE reed or DMSE electronic switches. It uses PT tapered G1/8 ports and relies on variable air cushions at both ends to decelerate the load, not to hold it without live air.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 55 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 SAIJ32BX55-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 SAIJ32BX55-20S Is Used
End-Stop Calibration
Fine-tune the 35-55 mm travel window during setup to perfectly strike a workpiece without physically remounting the actuator.
Product Size Changeover
Quickly accommodate varying material lengths on a conveyor line by adjusting the rear stopper instead of replacing the cylinder.
Light-Duty Positioning
Handles small parts placement using the 402N push force, with the SUS304 rod ensuring durability in mildly corrosive settings.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20S the Right Cylinder?
Choose this 32mm bore when you need precise end-position tuning without adding external stops or swapping cylinders on product changeovers. If your application requires higher force, stepping up to the 40mm bore yields 628N of push force at 0.5 MPa.
The rear adjuster acts strictly as a travel stop, meaning it cannot hold a load without continuous air pressure; for true load-holding, consider the SAIL or BSAI series. This SAIJ32X55-20-S is dimensionally interchangeable per ISO 15552 and includes the -S magnet, PT ports, and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ32BX55-20S FAQ
The SAIJ32X55-20-S has a rear adjusting screw that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 35 to 55 mm, allowing you to set the exact end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, the 32mm bore provides 402N of push force and 345N of pull force. It operates at speeds between 30 and 800 mm/s.
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