Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50
The AirTAC SAIJ125X160-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force at 0.5MPa and provides a usable travel window of 110 to 160mm, letting you trim the retract position by up to 50mm during commissioning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This unit is configured with an SUS420J2 stainless steel rod (code A) for improved corrosion resistance and features PT tapered ports. It supports a speed range of 30-500mm/s and uses a 32mm rod with an M27x2 thread. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 SAIJ125AX160-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×160 | 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 SAIJ125AX160-50 Is Used
Product Changeover
Dial in the exact 110 to 160mm end-stop during format size changes on packaging lines without mechanical rebuilds.
End-Position Tuning
Fine-tune the retract stroke on heavy machining fixtures to compensate for tooling wear or part variance.
Variable End Stops
Set precise retraction limits on automated assembly presses where multiple stopping points are required.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX160-50 the Right Cylinder?
Choose this 125mm bore when a 100mm cylinder (delivering 3927N push at 0.5MPa) lacks thrust, but a 160mm bore (10053N) would be excessive. The 50mm adjustment window is ideal for product changeovers, allowing you to fine-tune the end position without swapping the cylinder or adding external stops. For load-holding without live air, consider an external rod lock or the SAIL series.
When replacing an ISO 15552 cylinder, match the 125mm bore, 160mm stroke, PT port thread, and the chosen mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the nominal stroke is 160mm, ensure adequate guidance for any side loads. This SKU does not include a magnet, so CMSE or DMSE sensors cannot be used without specifying the -S option.
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 SAIJ125AX160-50 FAQ
At 0.5MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 160mm down to 110mm, creating a 110-160mm adjustable window. It functions as a mechanical stop and does not lock the load.
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