Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20S 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 SAIJ32X125-20S
The AirTAC SAIJ32X125-20-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 125 mm stroke that can be fine-tuned down by 20 mm, giving you a usable travel window of 105 to 125 mm. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa operating pressure.
Equipped with a standard carbon steel rod and a -S magnet, this unit is fully compatible with AirTAC CMSE reed and DMSE solid-state electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It features PT tapered port threads (G1/8) and reaches operating speeds of 30-800 mm/s.
Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20S |
|---|---|
| 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 SAIJ32X125-20S
| 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 SAIJ32X125-20S Is Used
Machine Changeover
Dial in the 105-125 mm stroke window during product size transitions on packaging lines without replacing the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to absorb mechanical tolerance variations and achieve precise final positioning.
Light-Duty Assembly
Drive small clamps and pick-and-place actuators with 402 N push force, using the adjustable stroke to tweak grip depth on the fly.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32X125-20S the Right Cylinder?
Choose this 32 mm bore adjustable cylinder when your machine setup requires precise end-position tuning during commissioning or product changeover without physically swapping components. If your application needs more thrust, stepping up to the 40 mm bore increases push force to 628 N at 0.5 MPa. Conversely, if you need less force in a tighter footprint, dropping to a smaller bore is ideal.
The rear adjuster acts purely as a travel stop to decelerate the piston, not as a locking device. This SAIJ cylinder will not hold a load without continuous live air pressure. For applications requiring true fail-safe load holding, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock series instead. When replacing an ISO 15552 cylinder, match the 32 mm bore, 125 mm stroke, 20 mm adjustment, PT G1/8 port, and -S magnet.
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 SAIJ32X125-20S FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 563 N.
A rear adjusting screw acts as an external stopper, allowing you to shorten the effective travel from the 125 mm nominal stroke down to 105 mm. The adjuster only sets the travel end and does not lock the load without live air pressure.
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