Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S
The AirTAC SAIJ125X100-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. The built-in stopper screw provides a 90-100 mm usable travel window, allowing you to dial in the exact end position without adding external stops. It features a PT tapered port, a SUS420J2 stainless steel rod for superior corrosion resistance, and a magnet for electronic DMSE or reed CMSE sensors.
This adjustable-stroke model shares the standard extruded aluminum barrel and sensor grooves on both sides, but omits the FB, CA, CB, and CR mounting accessories. The rear adjuster acts purely as a travel stop to fine-tune deceleration, meaning it will not hold a load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125AX100-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SAIJ125AX100-10S Is Used
Machine Setup & Changeover
Fine-tune the 90-100 mm travel window during product size transitions without physically swapping the cylinder or bolting on external stopper blocks.
Variable End-Stop Tuning
Dial in the exact retract position on packaging equipment, using the rear screw to compensate for mechanical tolerance stack-up during commissioning.
High-Force Positioning
Leverage the 6136N push force at 0.5 MPa to move heavy jigs or platens, relying on the SUS420J2 rod for durability in demanding industrial environments.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10S the Right Cylinder?
Choose this 125 mm bore when you need higher thrust than a 100 mm cylinder (3927N at 0.5 MPa) but want to avoid stepping up to a 160 mm frame (10053N). The 10 mm adjustment range is ideal for machine setups requiring precise variable end-stops during product changeover. For load-holding applications without live air, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead of relying on the adjuster.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 100 mm stroke, 10 mm adjustment, PT port, and -S magnet. With a 100 mm stroke, side-load is minimal, but always ensure the M27x2 rod thread and 32 mm rod diameter are properly guided to prevent binding.
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 SAIJ125AX100-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that shortens the 100 mm nominal stroke by up to 10 mm, providing a 90-100 mm usable travel window. It only sets the end position and does not lock the load without live air.
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