Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20S 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 SAIJ32AX550-20S
The AirTAC SAIJ32X550-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 402N of push force at 0.5 MPa and provides a usable travel window of 530 to 550 mm, letting you dial in the exact retract position without swapping hardware. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for position detection.
This model uses an SUS420J2 stainless steel piston rod (material code A) and PT tapered port threads. It supports speeds of 30-800 mm/s and uses adjustable air cushions at both ends to decelerate the load. The rear stopper sets the travel end-point during commissioning, but it does not lock the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20S |
|---|---|
| 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 SAIJ32AX550-20S
| 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 SAIJ32AX550-20S Is Used
Machine Changeover
Quickly adjust the retract distance by up to 20mm during product size changes without replacing the cylinder or adding external stopper blocks.
Variable End Stops
Fine-tune the exact end position on a 550mm stroke conveyor sorting arm to accommodate varying package dimensions at commissioning.
Sensor Calibration
Leverage the built-in magnet with CMSE reed or DMSE electronic sensors to confirm the adjusted 530-550mm travel window in automated assembly lines.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-20S the Right Cylinder?
Choose this 32mm bore when an application requires precise end-position tuning on a long 550mm stroke, stepping up from a smaller unit if you need more than the 402N push force available here. An adjustable stroke is preferred over a fixed SAI cylinder when you need product changeover flexibility or fine-tuning at machine setup. Because the stroke is 550mm, the M10x1.25 rod requires external guiding to prevent excessive side-loading on the seals.
For an exact ISO 15552 replacement, match the 32mm bore, 550mm stroke, 20mm adjustment, PT port, and -S magnet. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. If the machine requires true load-holding without continuous air pressure, use an external rod lock or select an AirTAC SAIL or BSAI cylinder 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 SAIJ32AX550-20S FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At 0.7 MPa, the push force increases to 563N.
The rear adjuster acts as a mechanical stop that shortens the 550mm nominal stroke by up to 20mm, giving an effective travel window of 530 to 550mm. It only sets the end position and does not hold the load without air pressure.
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