Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 275mm 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
- Stroke275 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S
The AirTAC SAIJ32X275-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 275 mm travel by up to 20 mm. This creates a precise 255-275 mm usable stroke window, perfect for fine-tuning end positions during commissioning without swapping hardware. As a 32 mm bore unit, it delivers 402 N of push force at 0.5 MPa.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic switches. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 275 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 SAIJ32AX275-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×275 | 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 SAIJ32AX275-20S Is Used
Machine Changeover
Quickly adjust the retract distance by up to 20 mm when switching between product sizes on a packaging line, avoiding the need to physically swap out the cylinder.
End-Position Tuning
Dial in the exact 255 to 275 mm travel window during initial commissioning to perfect the seating or clamping force of a delicate component.
Variable Stops
Act as an adjustable physical stop for lightweight diverters or gates, allowing operators to modify the stroke end-point on the fly without reprogramming the PLC.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX275-20S the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires exact end-position tuning or frequent product changeovers, replacing the need for fixed-stroke SAI cylinders and external stops. If your setup needs less force, dropping down is not an option from this size, but stepping up to a 40 mm bore increases push force to 628 N at 0.5 MPa. To replace an ISO 15552 cylinder, match the 32 mm bore, 275 mm stroke, 20 mm adjustment, PT tapered port, and -S magnet.
Because the 275 mm stroke is relatively long for a 32 mm bore, the 12 mm rod should be adequately supported by an external guide to prevent excessive side-loading and premature seal wear. For applications requiring the load to be held mechanically without continuous air pressure, a plain SAIJ is insufficient; consider an AirTAC SAIL locking cylinder or an external rod lock instead.
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 SAIJ32AX275-20S FAQ
At a standard operating pressure of 0.5 MPa, this 32 mm bore cylinder generates 402 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel from the nominal 275 mm down to 255 mm. This provides a 255-275 mm setup window for fine-tuning the retract end position without adding external stops.
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