Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 190mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke190 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S
The AirTAC SAIJ125X190-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 180 to 190 mm. Delivering 8590 N of push force at 0.7 MPa, it is built for heavy-duty positioning. The integrated -S magnet pairs seamlessly with AirTAC CMSE reed and DMSE solid-state sensors housed in the dual-side barrel grooves for precise end-position detection.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads. The rear mechanical stopper allows you to fine-tune the retract end-position at commissioning without adding external stops. Remember that this adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 190 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×190 | 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 SAIJ125 Adjustable Cylinder SAIJ125AX190-10S Is Used
Precision End-Stop Tuning
Dial in the exact 180-190 mm retract position during machine commissioning to meet strict product tolerances without swapping cylinders.
Product Line Changeover
Quickly adjust the stroke end-stop by up to 10 mm when switching product sizes on a high-thrust assembly line.
Heavy Fixture Positioning
Leverage 8590 N of thrust at 0.7 MPa to move heavy machining fixtures while using the rear stopper to set precise travel limits.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-10S the Right Cylinder?
Select this 125 mm bore when a 100 mm bore (offering 5497 N push at 0.7 MPa) lacks the thrust for your heavy fixtures, but a 160 mm bore (14074 N) is physically oversized. The 10 mm adjustment window is ideal for dialing in exact end-of-stroke positions during machine setup or product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder. To match this replacement, specify the 125 mm bore, 190 mm stroke, 10 mm adjustment, PT ports, SUS420J2 rod, and the -S magnet.
For any stroke of 190 mm, evaluate side-load conditions. The 32 mm diameter rod and M27x2 thread handle robust loads, but an external guide rail is recommended if the load is heavy or unsupported. For true load-holding without continuous air pressure, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead of relying on the rear stopper.
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 SAIJ125 Adjustable Cylinder SAIJ125AX190-10S FAQ
At a 0.5 MPa operating pressure, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 190 mm nominal stroke by up to 10 mm, creating a 180-190 mm usable travel window. It sets the end position but does not lock the load without live air.
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