Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40S 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 SAIJ32BX550-40S
The AirTAC SAIJ32X550-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to trim the effective travel back by up to 40 mm. This yields a usable stroke window of 510 to 550 mm, giving you precise control over the retract end position without swapping out the barrel. Operating at 0.5 MPa, it delivers 402 N of push force and 345 N of pull force.
This configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and features a magnet for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE solid-state switches. With a 12 mm rod and M10x1.25 thread, this 32 mm bore cylinder is built for reliable operation at speeds up to 800 mm/s.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40S |
|---|---|
| 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 SAIJ32BX550-40S
| 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 SAIJ32BX550-40S Is Used
Machine Changeover
Dial in the exact 510 to 550 mm retract position during product size changes without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the final end-of-stroke location during commissioning to perfect a process without machining custom spacers.
Variable Stop Points
Adjust the travel window on packaging or conveying lines to accommodate varying package dimensions on the fly.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX550-40S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires variable end-stops or frequent product changeovers, eliminating the need to physically swap cylinders for slightly different travel lengths. If your application demands higher force, stepping up to a 40 mm bore provides 628 N of push force at 0.5 MPa; however, the 32 mm bore is ideal when compact ISO 15552 footprint and moderate force are the priorities.
Because this cylinder features a 550 mm stroke, the unsupported load can induce lateral stress on the rod, so an external guide is recommended to prevent side-loading damage. The rear adjuster acts solely as a travel stop and does not hold the load without live air pressure; for true fail-safe load holding, consider the SAIL or BSAI series. This SKU uses PT tapered ports and the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options.
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 SAIJ32BX550-40S FAQ
The rear adjusting screw allows you to shorten the nominal 550 mm stroke by up to 40 mm, creating a usable travel window of 510 to 550 mm. The adjuster acts as a mechanical stop to tune the end position and does not lock the load without live air.
At an operating pressure of 0.5 MPa, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
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