Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-20S 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 SAIJ32BX650-20S
The AirTAC SAIJ32X650-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 20 mm of end-position trimming. This yields a usable travel window of 630 to 650 mm, allowing you to fine-tune the retract distance at commissioning without relying on external stops. It delivers 402 N of push thrust at 0.5 MPa and uses a PT tapered port thread paired with a SUS304 stainless steel rod for corrosion resistance.
Because the 650 mm stroke is relatively long for a 32 mm bore, the 12 mm rod and M10x1.25 thread should be paired with an external guide to manage side loads. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet operates seamlessly with AirTAC CMSE reed and DMSE electronic switches. The rear adjuster acts purely as a travel stop to set the end position, not as a load-holding lock.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-20S |
|---|---|
| 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 SAIJ32BX650-20S
| 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 SAIJ32BX650-20S Is Used
End-Position Tuning
Dial in the exact retract stop within a 630-650 mm window during commissioning without swapping cylinders or adding external physical stops.
Product Changeover
Quickly adjust the stroke by up to 20 mm on packaging lines when handling slightly different package dimensions, reducing downtime.
Long-Stroke Assembly
Utilize the 650 mm travel for extended reach operations while relying on the SUS304 rod for durability in varied industrial environments.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX650-20S the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires precise end-position tuning during machine setup or product changeover, offering a 630-650 mm travel window instead of a fixed 650 mm stroke. If your force requirements are higher, stepping up to the 40 mm bore increases push thrust to 628 N at 0.5 MPa. For applications needing true position holding without live air pressure, consider the SAIL or BSAI series, as the SAIJ rear adjuster is a stop, not a brake.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 650 mm stroke, 20 mm adjustment range, PT port thread, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For this 650 mm stroke, always use an external guide rail to prevent rod bending and premature seal wear.
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 SAIJ32BX650-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push thrust and 345 N of pull thrust. The maximum thrust is 82 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 630 to 650 mm, allowing fine-tuning of the end position without replacing the cylinder.
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