Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-75
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-75 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 SAIJ125X110-75
The AirTAC SAIJ125X110-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 35 to 110 mm, allowing you to dial back the nominal stroke by up to 75 mm during machine setup. Belonging to a high-force class, it delivers 8590 N of pull force at 0.7 MPa.
This extruded aluminum profile barrel omits the FB, CA, CB, and CR mounting styles, utilizing a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces. The standard carbon steel rod features an M27x2 thread and a robust 40 mm cushion at both ends to absorb kinetic energy. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-75 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-75 |
|---|---|
| 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 SAIJ125X110-75
| 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 SAIJ125X110-75 Is Used
Variable End Stops
Dial in the exact 35 to 110 mm travel distance during machine commissioning to accommodate changing material thicknesses without adding external physical stops.
Product Changeover
Quickly reposition the stroke end for different package sizes on a packaging line, using the 75 mm adjustment range to adapt the cylinder's effective reach.
Heavy Assembly Pressing
Leverage the 8590 N pull force at 0.7 MPa to securely seat heavy components, while fine-tuning the bottoming position to prevent over-travel damage.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-75 the Right Cylinder?
Choose this 125 mm bore when an application demands substantial thrust, such as 11045 N push at 0.9 MPa, but requires on-the-fly end-position tuning without swapping cylinders. If your force requirements are lower, stepping down to a 100 mm bore yields 5497 N push at 0.7 MPa. The 75 mm adjustment range is particularly useful for accommodating multiple product sizes on a single conveyor line.
For a direct ISO 15552 replacement match, verify the 110 mm stroke, 75 mm adjustment range, PT G1/2 port thread, and the required mounting accessory. Because the rod diameter is 32 mm, it handles side loads well, but any stroke exceeding 300 mm would require an external guide rail to prevent rod bending. For load-holding without live pressure, select the SAIL or BSAI series instead of relying on this adjuster.
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 SAIJ125X110-75 FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 110 mm nominal stroke down to a minimum of 35 mm. It trims the retract end position but does not lock the load without continuous air pressure.
At 0.7 MPa operating pressure, this 125 mm bore cylinder provides 8590 N of pull force and 11045 N of push force. The maximum thrust is 1251 kgf at 1.0 MPa.
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