Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30
The AirTAC SAIJ125X105-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 75 to 105 mm, allowing you to dial back the 105 mm nominal stroke by up to 30 mm during machine commissioning. This bore size generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for moving heavy industrial loads.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. The standard carbon steel rod and PT tapered port threads ensure robust physical connection and reliable pneumatic sealing for high-pressure operations.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 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 SAIJ125X105-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAIJ125X105-30 Is Used
Variable End-Stop Positioning
Ideal for heavy-duty presses or lifts where the exact retraction point must be fine-tuned within a 75 to 105 mm window during setup.
Product Changeover
Enables rapid adjustment of the retraction end-stop on automated lines when switching between product sizes, without swapping the cylinder.
Heavy Load Actuation
Provides 6136 N of thrust at 0.5 MPa for moving substantial jigs or workpieces, with the flexibility to trim travel by up to 30 mm.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X105-30 the Right Cylinder?
Choose this 125 mm bore cylinder when your application requires substantial thrust, such as 6136 N at 0.5 MPa, but demands precise end-position tuning without adding external stops. If you need less force, the 100 mm bore offers 3927 N of push at 0.5 MPa, while the larger 160 mm bore provides 10053 N for heavier payloads. The adjustable stroke is ideal for product changeovers where the exact end-stop varies slightly. For ISO 15552 replacement matching, specify the 125 mm bore, 105 mm stroke, 30 mm adjustment, PT G1/2 port, and the required mounting accessory.
Because the nominal stroke is 105 mm, an external guide is not strictly necessary for side-load support, but always ensure the load is properly aligned. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI cylinder series.
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 SAIJ125X105-30 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 105 mm nominal stroke by up to 30 mm, creating a usable travel window of 75 to 105 mm. It functions as a travel stop and does not lock the load without live air pressure.
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