Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10
The AirTAC SAIJ125X90-10 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers substantial thrust, pushing 6136N and pulling 5734N at 0.5 MPa, making it suitable for heavy-duty positioning tasks. By integrating a PT tapered port and a SUS420J2 stainless steel rod, this configuration provides enhanced durability and corrosion resistance.
The integrated rear stopper allows you to trim the nominal 90mm stroke back by up to 10mm, creating a precise 80-90mm usable travel window. This means you can fine-tune the end position during commissioning without swapping out the cylinder or adding external stops. The extruded aluminum barrel features sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches if a magnet is added later.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAIJ125AX90-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAIJ125AX90-10 Is Used
Machine Changeover
Dial in the 80-90mm travel window during product size changes to perfectly position heavy fixtures without machining new stop spacers.
Heavy Clamping
Leverage the 6136N push force to secure dense workpieces, using the rear adjuster to fine-tune the clamp's final contact position.
Assembly Station Setup
Precisely set the retracted end position during initial commissioning to ensure heavy press fits bottom out correctly every cycle.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10 the Right Cylinder?
Selecting this 125mm bore cylinder makes sense when your application requires the 6136N push force at 0.5 MPa and a variable end-stop. If you need less force, stepping down to an 80mm bore yields 2513N, but the SAIJ125X90-10 provides the necessary muscle for high-inertia loads while offering a 80-90mm adjustable travel window. Because the stroke is under 300mm, side-load stress is manageable, though the robust 32mm rod and M27x2 thread naturally handle higher bending loads.
Choose this adjustable-stroke model over a fixed SAI when you anticipate product changeovers or need precise end-position tuning at machine setup. Keep in mind the rear adjuster acts strictly as a travel stop, not a lock; the cylinder will not hold its load without live air pressure. For load-holding requirements, consider an external pilot-operated check valve or the SAIL lock variant. This unit uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
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 SAIJ125AX90-10 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides a push force of 6136N and a pull force of 5734N. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw allows you to shorten the nominal 90mm stroke by up to 10mm, providing an 80-90mm usable travel window. It acts as a mechanical stop to fine-tune the end position and does not lock the load without continuous air pressure.
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