Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S
The AirTAC SAIJ32X120-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 120 mm stroke that can be dialed back by up to 50 mm, creating a precise 70-120 mm usable travel window for on-the-fly end-position tuning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This model features a standard carbon steel piston rod and a built-in magnet for position sensing with AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster acts purely as a mechanical stop to set the travel end, not as a lock to hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 120 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 SAIJ32X120-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 SAIJ32X120-50S Is Used
Machine Changeover
Dial in the 70-120 mm travel window during product size changes on a packaging line without replacing the actuator.
Variable End Stops
Set precise retract positions for testing fixtures where the exact end-of-stroke point must be fine-tuned on-site.
Light Assembly Positioning
Leverage the 402 N push force to move small components into place while adjusting the stopper to perfect the final index.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50S the Right Cylinder?
Selecting this 32 mm bore over a larger 40 mm bore (which yields 628 N push at 0.5 MPa) is ideal for lighter duty tasks where you need to trim the travel window during commissioning or product changeover without physically swapping out the cylinder. To match an ISO 15552 replacement exactly, specify the 32 mm bore, 120 mm nominal stroke, 50 mm adjustment range, PT tapered port thread, and the -S magnet option.
Because the nominal stroke is 120 mm, side-loading risks are moderate, but you should still ensure proper external guiding for any unsupported loads. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard cylinders.
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 SAIJ32X120-50S 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 can deliver up to 82 kgf.
The rear adjuster screw lets you shorten the effective travel from the 120 mm nominal stroke down to 70 mm. This stopper only sets the end position and deceleration; it does not lock or hold the load without continuous air pressure.
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