Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10
The AirTAC SAIJ125X175-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N push force at 0.5 MPa. By integrating an external stopper at the rear, this actuator allows you to fine-tune the end position at commissioning without swapping out the entire cylinder. It yields a usable travel window of 165-175mm, letting you trim the nominal 175mm stroke by up to 10mm.
This 125mm bore unit features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads with a G1/2 connection. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is configured without a magnet, meaning CMSE or DMSE electronic switches cannot be used for position detection without adding one.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SAIJ125AX175-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SAIJ125AX175-10 Is Used
Machine Setup Changeover
Dial in the retract end-stop within the 165-175mm window during product format changes without adding external mechanical stops to the frame.
Heavy Press Positioning
Leverage the 6136N push force to seat heavy components, using the 10mm adjuster to fine-tune the final contact position precisely.
Variable End-Stop Actuation
Adjust the effective stroke on the fly for batch-specific material thicknesses, ensuring consistent clamping without reprogramming the motion controller.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX175-10 the Right Cylinder?
Choose this 125mm bore actuator when a machine requires heavy thrust up to 6136N at 0.5 MPa, stepping up from a 100mm bore that only provides 3927N. If your application demands less force, dropping to an 80mm bore saves space and air consumption while still yielding 2513N. The 10mm adjustment range is perfect for dialing in exact retract positions during product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot provide.
Because this is a 175mm stroke, side-load stress on the 32mm rod is moderate, but external guiding remains a good practice for heavy off-center loads. The rear adjuster acts purely as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. This model supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ125AX175-10 FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder provides a push force of 6136N and a pull force of 5734N. At 0.7 MPa, the push force increases to 8590N.
The rear adjusting screw acts as an external stopper that lets you shorten the effective stroke by up to 10mm, creating a usable travel window of 165-175mm. It is a mechanical stop for end-position tuning, not a lock, and does not hold the load without continuous air pressure.
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