Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10
The AirTAC SAIJ125X65-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 65 mm nominal stroke by up to 10 mm. This yields a precise 55-65 mm usable travel window, which is ideal for refining end positions during machine commissioning without swapping out the entire actuator. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks with ease.
This variant features a SUS420J2 stainless steel rod for enhanced durability against moisture and a PT tapered port thread for a robust pneumatic seal. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if a magnet is specified later. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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 SAIJ125AX65-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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 SAIJ125AX65-10 Is Used
Product Changeovers
Quickly dial in the 55-65 mm stroke window during packaging line format changes to accommodate varying carton sizes without replacing hardware.
Machine Setup
Fine-tune the rear stopper during initial commissioning to achieve exact end-of-stroke positioning for heavy 6136 N assembly presses.
Variable End Stops
Adjust the retract distance on the fly for automated machining cells that process multiple part lengths on a shared fixture.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10 the Right Cylinder?
Select this 125 mm bore actuator when a machine requires substantial thrust—such as the 6136 N push or 5734 N pull generated at 0.5 MPa—combined with variable end-stop positioning. If your application needs less force and a smaller footprint, stepping down to a 100 mm bore yields 3927 N of push force. Conversely, moving up to a 160 mm bore provides 10053 N for heavier loads. Choose the SAIJ adjustable design over a fixed SAI cylinder when you need to fine-tune the retracted position during product size changeovers.
For ISO 15552 dimensional replacement, match the 125 mm bore, 65 mm stroke, 10 mm adjustment range, PT port thread, and the desired mounting accessory. Remember that the rear adjuster acts strictly as a mechanical stop to set deceleration and travel limits; it does not hold the load without live air pressure. For true fail-safe load holding, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ125AX65-10 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 adjusting screw allows you to shorten the effective travel by up to 10 mm, creating a 55-65 mm usable stroke window. This stopper sets the travel end but does not lock or hold the load without continuous air pressure.
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