Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S
The AirTAC SAIJ125X130-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a carbon steel rod and a built-in magnet (-S) for position sensing. By turning the rear screw, you achieve a usable travel window of 100-130mm, allowing precise end-position tuning without swapping out the entire actuator.
This 125mm bore actuator uses PT tapered ports and operates at speeds of 30-500mm/s. It retains the standard extruded aluminum barrel with sensor grooves on both sides, making it dimensionally interchangeable with ISO 15552 cylinders. For load-holding without live air pressure, this stopper mechanism is insufficient and must be paired with a SAIL or BSAI locking cylinder.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAIJ125X130-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAIJ125X130-30S Is Used
Product Size Changeovers
Dial in the 100-130mm travel window during format changes on packaging lines, accommodating varied carton heights without mechanical rebuilds.
End-Position Calibration
Fine-tune the retract stroke during machine commissioning to perfect the seating pressure of heavy 6136N clamping forces.
Variable End Stops
Replace rigid external stop blocks with the built-in rear adjuster to streamline the assembly layout on large automated fixtures.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30S the Right Cylinder?
Choose this adjustable model over a fixed-stroke SAI when your machine requires frequent product-size changeovers or fine commissioning tweaks within that 100-130mm travel window. If your application demands less thrust, stepping down to a 100mm bore yields 3927N at 0.5 MPa, avoiding oversizing. Conversely, moving up to a 160mm bore provides 10053N for heavier loads.
When integrating this actuator, note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, explicitly omitting FB, CA, CB, and CR brackets. Because the stroke is 130mm, standard side-load precautions apply, though the 32mm rod diameter handles moderate bending stresses well. The -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors.
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 SAIJ125X130-30S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster screw allows you to trim the effective travel back by up to 30mm from the 130mm nominal stroke. This creates a flexible 100-130mm usable window for precise positioning without replacing the cylinder.
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