Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50 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 SAIJ32X120-50
The AirTAC SAIJ32X120-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 120 mm nominal stroke that can be dialed back by up to 50 mm, giving you a precise 70-120 mm usable travel window for product-size changeovers without swapping the physical cylinder. Delivering 402 N of push thrust at 0.5 MPa, it fits compact pneumatic setups requiring fine end-position tuning.
This 32 mm bore unit uses a G1/8 port and a 12 mm carbon steel rod with an M10x1.25 thread, handling speeds of 30-800 mm/s. It supports AirTAC CMSE reed and DMSE electronic sensors via dual-side barrel grooves. The rear adjuster acts purely as a travel stop for deceleration and does not hold the load without live air pressure; for true locking needs, consider the SAIL or BSAI series.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50 |
|---|---|
| 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 SAIJ32X120-50
| 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 SAIJ32X120-50 Is Used
Machine Changeovers
Dial in the exact 70 to 120 mm end-position during product size transitions on a packaging line without changing the cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning to compensate for mechanical wear or sensor placement drift.
Variable Diverter Stops
Adjust the travel distance on the fly for a conveyor diverter arm handling different package lengths.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X120-50 the Right Cylinder?
Choose this SAIJ32X120-50 when your machine requires frequent end-stop adjustments across a 70-120 mm travel window, avoiding the need to bolt on external stops or buy multiple fixed-stroke SAI cylinders. If your application needs less force, stepping down is not an option below 32 mm, but if you need greater clamping power, a 40 mm bore provides 628 N at 0.5 MPa. Because the 120 mm stroke exceeds 100 mm, ensure your payload is guided to prevent excessive side-loading on the 12 mm rod.
To replace an ISO 15552 cylinder, match the 32 mm bore, 120 mm stroke, 50 mm adjustment range, PT tapered port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2—omitting FB, CA, CB, CR). This configuration uses a standard carbon steel rod and no internal magnet for sensors.
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 SAIJ32X120-50 FAQ
At 0.5 MPa operating pressure, this 32 mm bore double-acting cylinder provides 402 N of push force and 345 N of pull force. It can reach a maximum of 82 kgf at 1.0 MPa.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from the 120 mm nominal stroke down to a minimum of 70 mm. It sets the end-position but does not lock the load without live air pressure.
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