Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-20S 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 SAIJ32AX650-20S
The AirTAC SAIJ32X650-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 650 mm stroke that can be fine-tuned backward by up to 20 mm, creating a usable travel window of 630-650 mm for precise end-position calibration. Operating at 0.5 MPa, it delivers 402 N of push force and 345 N of pull force.
This SKU is configured with a SUS420J2 stainless steel rod (option A) for improved corrosion resistance compared to standard carbon steel. It includes a magnet (-S) for direct mounting of AirTAC CMSE reed and DMSE solid-state sensors along the dual-side extruded barrel grooves. Fluid supply connects via PT tapered G1/8 ports, and the unit omits FB, CA, CB, and CR mounts, supporting only the Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-20S |
|---|---|
| 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 SAIJ32AX650-20S
| 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 SAIJ32AX650-20S Is Used
Machine Changeover
Dial in the 630-650 mm end-position during product size transitions on a packaging line without replacing the cylinder or adding external stopper blocks.
Assembly Calibration
Fine-tune the retract end-stop during commissioning to perfect the pressing depth of a 402 N component insertion operation.
Variable Diverting
Adjust the stroke window on a long-travel diverter arm to handle varying package lengths dynamically on the fly.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX650-20S the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or commissioning fine-tuning without physically swapping out a fixed-stroke SAI cylinder. If your application requires higher thrust, stepping up to a 40 mm bore yields 628 N of push force at 0.5 MPa, whereas dropping below 32 mm reduces the force envelope. Because the nominal 650 mm stroke is long relative to the 12 mm rod diameter, an external guide is recommended to prevent excessive side-loading and premature seal wear.
The rear adjuster acts purely as a mechanical travel stop to set deceleration and end limits; it does not hold the load without live air pressure. For true fail-safe load-holding without continuous air supply, select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead. To replace an ISO 15552 unit, match the 32 mm bore, 650 mm stroke, 20 mm adjustment, PT G1/8 port, and -S magnet specifications.
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 SAIJ32AX650-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It supports a standard operating speed range of 30-800 mm/s.
The rear adjusting screw acts as a mechanical stop that allows you to shorten the effective travel by up to 20 mm. This creates a usable stroke window of 630 to 650 mm, enabling precise end-position tuning at commissioning without altering the cylinder mount.
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