Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40
The AirTAC SAIJ32X290-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 250-290 mm usable travel window by allowing you to dial back the 290 mm nominal stroke by up to 40 mm during machine commissioning. In this A-version configuration, the carbon steel piston rod is upgraded to SUS420J2 stainless steel, and the fluid ports use PT tapered threads.
Delivering 402 N of push force and 345 N of pull force at 0.5 MPa, this 32 mm bore profile cylinder integrates variable air cushions at both ends to manage end-of-stroke deceleration. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to mount position switches if needed.
When sizing this actuator, stepping up to a 40 mm bore yields 628 N of push force at 0.5 MPa for heavier payloads, while dropping to a smaller bore reduces physical footprint. You would choose this adjustable-stroke SAIJ over a fixed-stroke SAI when you need to fine-tune the retract end position on the fly without swapping the cylinder or adding external stops. Because the stroke is 290 mm, the 12 mm rod and M10x1.25 thread still require an external guide to prevent excessive side-loading on the piston. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true fail-safe load holding, consider the SAIL or BSAI series. This model is dimensionally interchangeable with ISO 15552 mounting interfaces and uses the SAIJ mounting subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 290 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 SAIJ32AX290-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×290 | 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 SAIJ32AX290-40 Is Used
Machine Changeover
Dial in the exact 250-290 mm retract position during product size transitions without physically replacing the cylinder or repositioning hard stops.
End-Position Tuning
Fine-tune the final end-of-stroke point at commissioning to compensate for mechanical tolerance stack-ups across the fixture.
Variable End Stops
Use the 40 mm adjustment range to alter the working stroke dynamically for testing different process parameters on the assembly line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX290-40 the Right Cylinder?
Choose this 32 mm bore actuator when your application requires 402 N push force at 0.5 MPa with the flexibility of a 250-290 mm travel window. The PT tapered ports and SUS420J2 stainless rod suit environments where corrosion resistance is preferred. For a direct ISO 15552 replacement match, verify the 290 mm stroke, 40 mm adjustment range, PT port threads, and the required mounting bracket from the SAIJ subset. Because the stroke exceeds 300 mm guidelines for unsupported lengths, always pair it with an external linear guide to handle side loads. Remember that the rear adjuster is a stop, not a lock; it cannot hold a load without continuous air pressure.
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 SAIJ32AX290-40 FAQ
At 0.5 MPa operating pressure, this 32 mm bore double-acting cylinder generates 402 N of push force and 345 N of pull force. It can reach up to 724 N of push force at its maximum 0.9 MPa pressure.
The rear adjuster acts as a mechanical stop that shortens the effective travel. For this SAIJ32X290-40 model, you can trim the 290 mm nominal stroke back by up to 40 mm, creating a usable 250-290 mm travel window. This adjuster only sets the end position and does not lock the load without live air pressure.
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