Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S
The AirTAC SAIJ125X80-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 50 to 80 mm. Delivering 8590 N of push force at 0.7 MPa, it handles heavy positioning tasks with precision. The barrel features sensor grooves on both sides, and the integrated magnet (-S) supports electronic DMSE or reed CMSE switches for exact end-position detection.
This variant utilizes a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes PT tapered port threads (G1/2). The rear stopper screw allows you to fine-tune the retract end position during commissioning without adding external stops. Note that this adjuster acts solely as a travel stop, not a load-holding lock; for dead-load holding without live air, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAIJ125AX80-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAIJ125AX80-30S Is Used
Product Changeover
Dial in the 50 to 80 mm stroke window during format changes on packaging lines without physically swapping the cylinder or adding mechanical shims.
Heavy Press Fit
Leverage the 8590 N push force at 0.7 MPa to seat heavy components, using the rear stopper to precisely limit insertion depth.
Sensor Equipped Setup
Utilize the integrated magnet with DMSE electronic or CMSE reed switches to confirm the adjusted end position in automated control systems.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX80-30S the Right Cylinder?
Select this 125 mm bore cylinder when an 80 mm nominal stroke requires exact end-position tuning, yielding a 50 to 80 mm adjustable window. If the application needs less thrust, stepping down to a 100 mm bore provides 5497 N at 0.7 MPa, whereas larger loads up to 14074 N at 0.9 MPa justify stepping up to a 160 mm bore. Because the 80 mm stroke is below the 300 mm threshold, external side-load guides are less critical, though the robust 32 mm rod and M27x2 thread naturally handle high mechanical stress.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 125 mm bore, 80 mm stroke, 30 mm adjustment range, PT port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets. The operating speed for this bore is rated at 30-500 mm/s.
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 SAIJ125AX80-30S FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder provides 8590 N of push force and 5734 N of pull force. At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster screw allows you to shorten the 80 mm nominal stroke by up to 30 mm, creating a 50 to 80 mm usable travel window. This stopper sets the end position but does not lock the load without live air pressure.
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