Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20 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 SAIJ32BX55-20
The AirTAC SAIJ32X55-20 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 55 mm stroke that can be dialed back by up to 20 mm, yielding a usable travel window of 35 to 55 mm for precise end-position tuning during commissioning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This configuration features a SUS304 stainless steel rod (option B) for enhanced corrosion resistance, a 12 mm rod diameter with an M10x1.25 thread, and PT tapered ports. The extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts strictly as a mechanical stop for deceleration and positioning; it does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20 |
|---|---|
| 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 SAIJ32BX55-20
| 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 SAIJ32BX55-20 Is Used
Machine Setup & Changeover
Dial in the exact 35 to 55 mm end-stop during product changeover without physically replacing the cylinder or re-engineering the fixture.
Variable End-Stop Positioning
Fine-tune the retract distance by up to 20 mm at commissioning to accommodate minor variations in part dimensions or tooling length.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod and compact 32 mm bore for light-duty pushing and pulling tasks where moisture or chemical exposure is a concern.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX55-20 the Right Cylinder?
Choose this 32 mm bore adjustable cylinder when your application requires exact end-position tuning without adding external stops or swapping components. If you need greater thrust, stepping up to a 40 mm bore provides 628 N of push force at 0.5 MPa. Conversely, if your force requirements are lower, a smaller bore would reduce physical size and air consumption.
The SAIJ32X55-20 is dimensionally interchangeable per ISO 15552 mounting interfaces. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because it lacks a magnet (-S not specified), it does not support AirTAC CMSE or DMSE sensors out of the box. For any load-holding requirements during air loss, consider an external rod lock or AirTAC SAIL and BSAI series cylinders instead of relying on the adjuster.
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 SAIJ32BX55-20 FAQ
At a standard 0.5 MPa operating pressure, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel from the nominal 55 mm stroke by up to 20 mm. This creates a usable stroke window of 35 to 55 mm, enabling fine-tuning of the end position without swapping the cylinder.
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