Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10
The AirTAC SAIJ125X45-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 35 to 45 mm usable travel window. Delivering 6136 N of push force at 0.5 MPa, it handles heavy positioning tasks with precision. The extruded aluminum barrel includes sensor grooves on both sides, though this non-magnet variant omits position sensing.
Equipped with a SUS420J2 stainless steel rod for corrosion resistance and PT tapered ports, it operates at speeds between 30 and 500 mm/s. The rear adjuster acts purely as a travel stop for end-position tuning, meaning it will not hold the load without live air pressure. For load-holding without continuous air, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 45 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 SAIJ125AX45-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×45 | 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 SAIJ125AX45-10 Is Used
Changeover Tuning
Fine-tune the 35-45 mm travel window during product size changeovers on packaging lines without replacing the cylinder.
Heavy Press Positioning
Leverage the 6136 N push force to seat heavy components accurately, using the rear stop to dial in the exact contact point.
Adjustable End Stops
Set variable retract positions on automated machinery, relying on the built-in adjuster rather than fabricating external hard stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX45-10 the Right Cylinder?
Choose this 125 mm bore when 100 mm (3927 N at 0.5 MPa) lacks the power for your heavy fixtures, but stepping up to 160 mm is unnecessary. The 10 mm adjustment range is perfect for dialing in exact end positions during commissioning or product changeovers, saving you from swapping out a fixed-stroke SAI cylinder or adding bulky external stops.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 45 mm stroke, 10 mm adjuster, PT port thread, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the stroke is under 300 mm, side-loading is minimal, but ensure the SUS420J2 rod is aligned to prevent premature seal wear.
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 SAIJ125AX45-10 FAQ
The rear adjusting screw lets you shorten the effective travel by up to 10 mm, creating a 35 to 45 mm usable stroke window. This allows precise end-position tuning at commissioning without swapping the cylinder.
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 1251 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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