Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S
The AirTAC SAIJ125X110-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 110 mm stroke that can be dialed back by up to 40 mm, creating a precise 70-110 mm usable travel window for on-the-fly end-position tuning. Belonging to the 125 mm bore class, it delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it suited for heavy-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and fluid control is managed via PT tapered G1/2 ports. Adjustment is achieved mechanically at the retract end, allowing you to set deceleration and travel limits without adding external stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125AX110-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125AX110-40S Is Used
Product Changeover
Dial in the 70-110 mm travel window during format changes on a packaging line, allowing rapid adaptation to different carton sizes without replacing the actuator.
Heavy-Duty Positioning
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or fixtures, using the rear stopper to precisely set the retraction endpoint at commissioning.
Machine Setup
Fine-tune the end-of-stroke position during initial machine commissioning to prevent mechanical interference, utilizing the 40 mm adjustment range to find the optimal operating point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-40S the Right Cylinder?
Select this 125 mm bore cylinder when an application demands high thrust combined with variable end-stops, such as accommodating multiple product sizes on a single line without swapping actuators. If the 6136 N push force at 0.5 MPa exceeds your requirements, stepping down to an 80 mm bore yields 2513 N, whereas moving up to a 160 mm bore provides 10053 N. For this 110 mm stroke, the robust 32 mm rod and M27x2 thread handle substantial side loads, though any configuration exceeding 300 mm of travel would require an external guide.
The rear adjuster acts strictly as a travel stop to fine-tune the retract position and relies on the integrated air cushion for deceleration; it does not hold the load without continuous air pressure. For applications requiring true load-holding in the event of pressure loss, consider the SAIL pneumatic lock or BSAI clamp-lock series instead. To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 110 mm stroke, 40 mm adjustment range, PT G1/2 port, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
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 SAIJ125AX110-40S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 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 that allows you to shorten the 110 mm nominal stroke by up to 40 mm, providing a usable travel window of 70 to 110 mm. It sets the end position and deceleration point but does not lock the load without live air pressure.
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