Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10
The AirTAC SAIJ125X350-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 340-350 mm. It delivers a robust 6136 N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and PT tapered port threads. The rear adjustment screw allows precise end-position tuning during commissioning without swapping the cylinder. The adjuster functions strictly as a travel stop and deceleration aid, not a load-holding lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 350 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 SAIJ125AX350-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×350 | 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 SAIJ125AX350-10 Is Used
Machine Setup & Changeover
Dial in the exact 340-350 mm end position during product size transitions without replacing the cylinder or adding external stopper blocks.
Heavy-Duty Positioning
Leverage the 6136 N push force at 0.5 MPa to move and position heavy jigs, with the rear screw providing final millimeter tuning.
Variable End-Stop Tuning
Fine-tune the retract stroke by up to 10 mm to compensate for mechanical wear or slight misalignments in the fixture over time.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX350-10 the Right Cylinder?
Choose this 125 mm bore cylinder when an application requires substantial force (6136 N at 0.5 MPa) alongside minor end-position tweaking. If your process demands less thrust, stepping down to a 100 mm bore yields 3927 N at 0.5 MPa. The 10 mm adjustment range is ideal for dialing in exact end stops during machine setup or product changeover, avoiding the need to bolt on external physical stops.
Because the 350 mm stroke is substantial, an external guide is recommended to manage side loads and prevent rod binding. This SAIJ model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552 but provides no load-holding without live air; for true locking, select an SAIL or BSAI cylinder.
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 SAIJ125AX350-10 FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. The operational speed range for this 125 mm bore cylinder is 30-500 mm/s.
A rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective travel from 350 mm down to 340 mm. It only sets the travel end and does not hold the load without continuous air pressure.
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