Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-50S 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 SAIJ32AX55-50S
The AirTAC SAIJ32X55-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 5 to 55 mm. Designed for precise end-position tuning at commissioning, it eliminates the need to swap cylinders or bolt on external stops during product changeovers. The extruded aluminum barrel ensures dimensionally interchangeable per ISO 15552 mounting dimensions.
In this 32 mm bore configuration, the cylinder delivers 402 N of push force and 345 N of pull force at 0.5 MPa. It features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The rear adjuster acts purely as a travel stop for deceleration, meaning it will not hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-50S |
|---|---|
| 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 SAIJ32AX55-50S
| 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 SAIJ32AX55-50S Is Used
Product Changeovers
Dial in the exact 5 to 55 mm end-stop during format changeovers on a packaging line without swapping out the physical actuator.
End-Position Tuning
Fine-tune the retract position at commissioning to align delicate tooling, using the rear stopper to dial out mechanical slack.
Variable Stroke Probing
Adjust the travel window on the fly for automated test fixtures that need to accommodate multiple part heights.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-50S the Right Cylinder?
Choose this 32 mm bore cylinder when an application requires 402 N of push force at 0.5 MPa with highly variable end-stops; if you need less force, stepping down is not an option in this series, but stepping up to a 40 mm bore yields 628 N. The adjustable stroke is ideal for machine setups requiring frequent product-size changes, offering a 5-55 mm travel window without replacing the actuator. For holding loads without live air, pair this cylinder with a SAIL air-released lock or an external pilot-operated check valve, as the adjuster is not a locking mechanism. To match this exact ISO 15552 replacement, specify a 32 mm bore, 55 mm stroke, 50 mm adjustment range, PT tapered port, and a magnet for CMSE / DMSE sensors.
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 SAIJ32AX55-50S FAQ
At 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 trim the nominal 55 mm stroke back by up to 50 mm, creating a usable travel window of 5 to 55 mm. This stopper sets the travel end and works with the air cushion for deceleration, but it does not lock the load without continuous air pressure.
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