Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-40 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 SAIJ125AX190-40
The AirTAC SAIJ125X190-40 is a double-acting ISO 15552 profile cylinder engineered with a rear stroke adjuster, allowing you to dial back the nominal 190 mm travel to a precise 150-190 mm window during commissioning. It delivers a robust 6136 N push force at 0.5 MPa, scaling up to 11045 N at 0.9 MPa, making it ideal for heavy-duty positioning tasks.
This specific SKU features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and ships with PT tapered G1/2 ports. The extruded aluminum barrel includes dual sensor grooves for CMSE reed or DMSE electronic switches, though this base configuration omits the internal magnet. The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-40 |
|---|---|
| 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 SAIJ125AX190-40
| 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 SAIJ125AX190-40 Is Used
Machine Setup & Changeover
Fine-tune the 150-190 mm retract position on the fly during product size changes without swapping actuators or re-engineering fixed external stops.
Heavy-Duty Forming
Leverage the 11045 N push force at 0.9 MPa for pressing and forming operations, using the 40 mm adjustment window to dial in the exact material contact depth.
Variable End-Stop Positioning
Perfect for assembly lines needing precise end-of-stroke tuning, utilizing the SUS420J2 stainless rod to withstand harsher industrial environments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-40 the Right Cylinder?
Select this 125 mm bore actuator when your application demands high thrust (6136 N at 0.5 MPa) alongside variable end-stops for product changeovers. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N push force; conversely, upgrading to a 160 mm bore provides 10053 N. The adjustable-stroke mechanism is perfect for fine-tuning the retract position without adding external stops or swapping out the entire cylinder.
For load-holding applications without continuous live air, note that this SAIJ rear adjuster is a travel stop, not a lock. You would need to explore an AirTAC SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. This model is dimensionally interchangeable per ISO 15552, uses a PT G1/2 port, and supports a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). With a 190 mm stroke, side-load risks are moderate, but external guides are recommended for heavy off-center loads.
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 SAIJ125AX190-40 FAQ
It features a rear adjusting screw that lets you mechanically shorten the effective travel from 190 mm down to 150 mm. This creates a 40 mm adjustable window for fine-tuning the end position at commissioning. The adjuster acts as a stop and does not lock the load without live air pressure.
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.9 MPa, the push force increases to 11045 N.
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