Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S
The AirTAC SAIJ32X250-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 402N of push force at 0.5 MPa and features a 250mm nominal stroke that can be fine-tuned down by up to 75mm, creating a precise 175-250mm usable travel window. This built-in adjustability allows you to dial in the exact retract end-position during commissioning without swapping hardware.
This configuration includes a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the integrated magnet (-S) directly supports AirTAC CMSE reed and DMSE electronic solid-state switches. The rear screw acts purely as a travel stop to set deceleration, so live air is required to hold the load.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 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 SAIJ32AX250-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | 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 SAIJ32AX250-75S Is Used
Machine Setup Changeover
Dial in the 175-250mm retract position during product format changes without physically replacing the cylinder or adding external stopper blocks.
Variable End-Stop Diverter
Adjust the stroke on the fly to meet varying package sizes on a conveyor line, using the rear screw to set the exact push distance.
Precision End-Positioning
Fine-tune the final retract end-point during commissioning to achieve precise alignment, relying on the stop screw rather than fixed hard stops.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX250-75S the Right Cylinder?
Choose this 32mm bore when you need 402N push force at 0.5 MPa with on-the-fly end-position tuning; if your application requires less force, stepping down is not an option in this series, but stepping up to a 40mm bore yields 628N. The 75mm adjustment window is perfect for product-size changeovers on a line, replacing the need to bolt on external stops or buy a fixed-stroke SAI cylinder. To match this ISO 15552 footprint for a direct replacement, verify the 32mm bore, 250mm stroke, PT port, and -S magnet. Because the stroke is 250mm, ensure external guiding is used to prevent excessive side-loading on the 12mm rod. For load-holding without continuous air pressure, the adjuster here is not a brake—look to the SAIL or BSAI series 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 SAIJ32AX250-75S FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 75mm. This creates a usable travel window of 175-250mm, letting you fine-tune the retract end-position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, it provides 402N of push force and 345N of pull force. If operated at 0.7 MPa, the push force increases to 563N.
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