Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20
The AirTAC SAIJ32X125-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 402N of push force at 0.5 MPa and uses a 12mm carbon steel rod with an M10x1.25 thread. This configuration allows you to dial back the 125mm nominal stroke by up to 20mm, creating a precise 105-125mm usable travel window for exact end-position tuning at commissioning.
Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract position during machine setup or product changeover without swapping the barrel or adding external stops. The extruded aluminum body includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though a magnet must be specified separately. The rear adjuster acts only as a travel stop and cannot hold a load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 SAIJ32X125-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SAIJ32X125-20 Is Used
Product Changeover
Dial in the 105-125mm travel window during packaging line changeovers to accommodate different carton sizes without swapping hardware.
Commissioning Tuning
Fine-tune the retract end-position during machine setup to align tooling precisely, using the 20mm rear adjuster instead of external stoppers.
Variable End Stops
Set exact end-of-stroke positions for light-duty machining tasks requiring 402N of push force at 0.5 MPa.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20 the Right Cylinder?
Choose this 32mm bore if your application requires the 402N push force at 0.5 MPa; stepping down is not an option in this series, but stepping up to a 40mm bore yields 628N if your payload increases. The adjustable 105-125mm travel window is ideal for variable end-stops and product-size changeovers, whereas a fixed SAI cylinder is better for set-and-forget repetitive motions. For load-holding without continuous air pressure, this plain cylinder is insufficient—you should look at the SAIL or BSAI series instead. When replacing an ISO 15552 cylinder, match the 32mm bore, 125mm stroke, 20mm adjustment, PT tapered G1/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SAIJ32X125-20 FAQ
The nominal stroke is 125mm, but the rear adjuster allows you to shorten the effective travel by up to 20mm, resulting in a usable travel window of 105-125mm.
No, the rear adjuster is a travel stop, not a lock. The cylinder and its air cushions cannot hold a load without live air. For load-holding, consider the SAIL or BSAI series.
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