Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-20 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 SAIJ32AX55-20
The AirTAC SAIJ32X55-20 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical adjuster. It provides a usable travel window of 35 to 55 mm, letting you dial in the exact retract position 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, making it well-suited for lighter-duty positioning tasks.
This variant features a SUS420J2 stainless steel piston rod and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and while this unit lacks a magnet, the grooves remain ready for external proximity mounts. The rear adjustment screw functions purely as a travel stop to set the end position, not as a load-holding lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-20 |
|---|---|
| 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 SAIJ32AX55-20
| 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 SAIJ32AX55-20 Is Used
Product Changeovers
Dial in the 35-55 mm travel window during machine setup to accommodate varying product sizes without swapping cylinders.
Commissioning Calibration
Fine-tune the exact retract end-position during initial startup to align tooling perfectly without external stoppers.
Light-Duty Positioning
Leverage the 402 N push force for compact, precise component placement in automated assembly lines.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX55-20 the Right Cylinder?
Choose this 32 mm bore when your application requires less force than the 40 mm size (which provides 628 N at 0.5 MPa) but you still need precise travel tuning. An adjustable stroke is ideal for machine changeovers where product sizes vary, replacing the need to physically swap out a fixed-stroke SAI cylinder. The standard speed range is 30-800 mm/s.
Because the SAIJ32X55-20 is a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders. To match this exact configuration, specify a 32 mm bore, 55 mm stroke, 20 mm adjustment range, PT ports, and no magnet. Remember that the rear adjuster only halts the piston; it will not hold a load without live air pressure, so for true locking needs consider an SAIL or BSAI cylinder.
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 SAIJ32AX55-20 FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 55 mm down to 35 mm. This creates a 35-55 mm adjustable window for fine-tuning the end position at commissioning.
At 0.5 MPa operating pressure, the SAIJ32X55-20 provides 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at 0.9 MPa.
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