Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30 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 SAIJ125X130-30
The AirTAC SAIJ125X130-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 100 to 130 mm. Belonging to the 125 mm bore class, it delivers a substantial 6136 N push force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks. The unit features a carbon steel piston rod and utilizes PT tapered ports for pneumatic connections.
By turning the rear adjustment screw, you can fine-tune the retract end position by up to 30 mm during commissioning or product changeovers without adding bulky external stops. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if a magnet is specified later. This adjustable stopper relies on live air to maintain its position and does not function as a mechanical lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30 |
|---|---|
| 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 SAIJ125X130-30
| 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 SAIJ125X130-30 Is Used
Variable End-Stops
Dial in the exact retract distance up to 30 mm during machine setup to accommodate varying material thicknesses without changing hardware.
Product Changeover
Quickly adjust the travel window from 100 to 130 mm on a packaging line to handle different carton sizes efficiently.
Commissioning Fine-Tune
Trim the final end position precisely during installation to align tooling, avoiding the need to bolt on external physical stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X130-30 the Right Cylinder?
Selecting this 125 mm bore model makes sense when your application requires high force, as stepping down to an 80 mm bore yields only 2513 N at 0.5 MPa. An adjustable stroke is chosen over a fixed-stroke SAI when a machine requires variable end-stops to accommodate multiple product sizes on the same line. For any load-holding requirements without continuous air pressure, this cylinder is not a lock; you should explore the SAIL or BSAI series instead.
To match this ISO 15552 cylinder for a retrofit, verify the 125 mm bore, 130 mm stroke, 30 mm adjustment range, PT port thread, and your required mounting accessory from the SAIJ set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 32 mm rod diameter and M27x2 thread handle significant side loads, ensure proper guidance if the load is heavy or off-center.
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 SAIJ125X130-30 FAQ
This 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force increases to 8590 N.
The rear adjuster acts as a travel stop, allowing you to shorten the effective stroke from its 130 mm nominal length down to 100 mm. This creates a 100-130 mm usable travel window for fine-tuning the end position at commissioning.
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