Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-75
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-75 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 SAIJ32AX550-75
The AirTAC SAIJ32X550-75 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a nominal 550 mm stroke that can be dialed back by up to 75 mm, creating a precise 475-550 mm usable travel window for exact end-position tuning. At 0.5 MPa, it generates 402 N of push force and 345 N of pull force, operating at speeds of 30-800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, and this specific configuration uses a SUS420J2 stainless steel rod with PT tapered ports.
The integrated rear stopper allows you to trim the effective stroke during commissioning or product changeover without swapping out the cylinder or adding external stops. It is crucial to note that this rear adjuster functions strictly as a travel stop and deceleration point, not a load-holding lock; the cylinder cannot hold a load without live air pressure. For applications requiring true position holding, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-75 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-75 |
|---|---|
| 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 SAIJ32AX550-75
| 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 SAIJ32AX550-75 Is Used
Variable End-Stop Tuning
Dial in the exact 475 to 550 mm travel distance during machine setup to accommodate different material lengths without physically changing the cylinder.
Product Changeover
Quickly adjust the retract end-position on packaging lines handling varying carton sizes, reducing downtime between production runs.
Commissioning Calibration
Fine-tune the final end-of-stroke position during installation to perfect timing and prevent mechanical crashes, avoiding the need for external stop blocks.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-75 the Right Cylinder?
Choose this 32 mm bore if your application requires moderate force (402 N push at 0.5 MPa) and a highly adjustable end-stop. If you need significantly more thrust, stepping up to the 40 mm bore yields 628 N of push force. The 75 mm adjustment range is ideal for machines processing variable product sizes, replacing the need to stock multiple fixed-stroke SAI cylinders. Because the stroke extends to 550 mm, the 12 mm rod should be externally guided to prevent excessive side-load wear on the seals. As a true ISO 15552 cylinder, it is dimensionally interchangeable with standard ISO 15552 mounting interfaces and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ32AX550-75 FAQ
At an operating pressure of 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. If you increase the pressure to 0.7 MPa, the push force reaches 563 N.
The rear adjuster acts as a mechanical stop that lets you shorten the 550 mm nominal stroke by up to 75 mm, providing a usable travel window between 475 and 550 mm. It only sets the travel end and does not lock the load without live air pressure.
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