Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-75
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-75 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 SAIJ32BX550-75
The AirTAC SAIJ32X550-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 550 mm stroke that can be dialed back by up to 75 mm, yielding a precise 475-550 mm usable travel window for commissioning without external stops. It delivers 402 N of push force at 0.5 MPa and uses a SUS304 stainless steel rod for superior corrosion resistance.
This model features PT tapered port threads and lacks a piston magnet. The rear adjuster acts purely as a mechanical stop to set the retract end-position; it does not hold the load without live air pressure. For position holding, an external rod lock or SAIL cylinder is required. The extruded aluminum barrel includes sensor grooves on both sides for future upgrades.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-75 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-75 |
|---|---|
| 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 SAIJ32BX550-75
| 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 SAIJ32BX550-75 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance between 475 and 550 mm during machine commissioning to accommodate different material thicknesses without swapping cylinders.
Product Changeover Diverter
Adjust the stroke on the fly to meet new package sizes on a packaging line, using the rear stopper to fine-tune the diverter arm's resting position.
Long-Stroke Alignment Press
Utilize the 550 mm travel to reach across a wide bay for part alignment, relying on the 75 mm adjustment window to set the exact final touch-point.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-75 the Right Cylinder?
Select this 32 mm bore when your application requires 402 N of push force at 0.5 MPa (or 563 N at 0.7 MPa) alongside a long 550 mm stroke that needs fine-tuning. If your setup needs less force, stepping down is not an option in this profile size, but stepping up to a 40 mm bore yields 628 N at 0.5 MPa. Because the stroke is 550 mm, the 12 mm rod and M10x1.25 thread will experience amplified side loads if the tooling is unsupported, so an external guide rail is strongly recommended to prevent premature seal wear.
Choose this adjustable-stroke SAIJ over a fixed SAI when you need variable end-stops for product changeovers on a shared line. The ISO 15552 mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. For load-holding without continuous air pressure, the adjuster and air cushions will not act as a brake; consider a SAIL or BSAI series cylinder instead.
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 SAIJ32BX550-75 FAQ
At 0.5 MPa operating pressure, 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 rises to 563 N.
The rear adjuster screw allows you to mechanically shorten the effective stroke from its 550 mm nominal length by up to 75 mm. This creates a 475-550 mm travel window, letting you set the exact end-position at commissioning without adding external stops.
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