Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40 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 SAIJ32AX550-40
The AirTAC SAIJ32X550-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the nominal 550 mm travel back by up to 40 mm, yielding a precise 510-550 mm usable window. This on-body fine-tuning is ideal for dialing in end positions during commissioning or product changeovers without adding external stops. It delivers 402 N of push force at 0.5 MPa and reaches speeds of 30-800 mm/s.
The piston rod is SUS420J2 stainless steel (code A) for better corrosion resistance than carbon steel, and the PT tapered port threads directly into your pneumatic supply. The extruded aluminum barrel includes sensor grooves on both sides for adding CMSE reed or DMSE electronic switches. The rear adjuster acts strictly as a travel stop to set deceleration and end limits; it does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40 |
|---|---|
| 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 SAIJ32AX550-40
| 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 SAIJ32AX550-40 Is Used
Machine Changeover
Dial in the 510-550 mm stroke window during product size transitions without swapping out the entire cylinder or adding external mechanical stops.
Commissioning End-Stop
Fine-tune the exact retract position at startup using the 40 mm rear adjustment screw to perfectly time machine sequencing.
Variable Transfer Stops
Adjust the end-of-stroke stopping point on the fly for conveyor lines handling varying package lengths within the 510-550 mm range.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX550-40 the Right Cylinder?
Choose this 32 mm bore when you need 402 N push force at 0.5 MPa and a highly adjustable 510-550 mm stroke window. If your machine requires more thrust, stepping up to the 40 mm bore yields 628 N at 0.5 MPa. The SAIJ adjustable-stroke design is selected over a fixed SAI cylinder when you need variable end-stops for machine setup or product size changes. Because the stroke is 550 mm, the 12 mm rod needs an external guide to prevent excessive side loading and premature seal wear.
For a true ISO 15552 replacement match, verify the 32 mm bore, 550 mm nominal stroke, 40 mm adjustment range, PT port thread, and standard mounting options. The SAIJ series uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Remember that the rear adjuster is not a lock; for load-holding without live pressure, consider an external rod lock or pilot-operated check valve.
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 SAIJ32AX550-40 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 80 kgf.
The rear adjuster screw acts as a mechanical stop that shortens the 550 mm nominal stroke by up to 40 mm, giving a usable travel window of 510 to 550 mm. It sets the end position but does not lock or hold the load without live air pressure.
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