Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75
The AirTAC SAIJ32X650-75 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits you to trim the nominal 650 mm travel back by up to 75 mm, yielding a usable 575 to 650 mm end-position window. In the 32 mm bore class, it delivers 402 N of push thrust and 345 N of pull thrust at a 0.5 MPa operating pressure. This configuration uses a SUS304 stainless steel rod for enhanced corrosion resistance and features PT tapered port threads.
Unlike a fixed-stroke SAI cylinder, the integrated rear stopper screw allows precise end-position tuning at commissioning without swapping the barrel or adding external stops. The extruded aluminum profile includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic solid-state switches. Remember that the adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 650 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 SAIJ32BX650-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×650 | 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 SAIJ32BX650-75 Is Used
Variable End-Stop Tuning
Dial in the exact retraction point within the 575-650 mm window during machine setup to accommodate different material thicknesses without changing the cylinder.
Product Changeover Systems
Quickly adjust the stroke length on packaging or sorting lines when switching to a new product size, using the rear screw to set the new travel limit.
Corrosive Environment Actuators
Leverage the SUS304 stainless steel rod in light-duty manufacturing cells where moisture or chemicals are present, ensuring reliable actuation over a long 650 mm travel.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-75 the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N push force at 0.5 MPa; stepping down is not an option within the SAIJ range, but stepping up to a 40 mm bore provides 628 N if your payload increases. The 75 mm adjustment window is highly valuable for product changeovers on a line, letting you dial in the exact retraction distance without machining new hard stops. If you need true load-holding without continuous air pressure, the SAIJ adjuster will not suffice—you should look at the SAIL pneumatic lock or BSAI clamp-lock series instead.
Because the 650 mm stroke is substantial for a 32 mm bore, the 12 mm rod and M10x1.25 rod thread will experience amplified side-loading forces if the load is unsupported. Always guide the tooling externally on strokes of this length to prevent binding. For an ISO 15552 dimensionally interchangeable replacement, match the 32 mm bore, 650 mm stroke, 75 mm adjustment, PT port threads, and the SUS304 (B) rod material specification.
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 SAIJ32BX650-75 FAQ
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 82 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 650 mm down to as little as 575 mm. It fine-tunes the end position but does not lock the load without live air pressure.
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