Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 60mm 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
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S
The AirTAC SAIJ125X60-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a SUS420J2 stainless steel rod (code A) and a PT tapered port. With a 60mm nominal stroke and a 40mm adjustment range, it provides a usable travel window of 20-60mm, allowing you to dial back the end position precisely without adding external stops.
This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, fitting into the dual-side sensor grooves of the extruded aluminum barrel. The rear adjuster acts purely as a travel stop to fine-tune deceleration; it does not hold the load without live air pressure. For load-holding requirements without continuous pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAIJ125AX60-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SAIJ125AX60-40S Is Used
Machine Changeover
Rapidly reconfigure the 20-60mm travel window during product size transitions without disassembling the cylinder or adding external stopper blocks.
End-Position Tuning
Fine-tune the retract end-position during commissioning to dial in exact contact forces for high-precision assembly presses.
Adjustable Ejection
Vary the ejection stroke on an automated line to safely push different part sizes without applying excessive 6136N thrust at the wrong point.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX60-40S the Right Cylinder?
Choose this 125mm bore when an 80mm bore (providing 2513N push force at 0.5 MPa) is insufficient, but you want to avoid jumping to a 160mm unit. The 40mm adjustment window is ideal for product changeovers on a line, letting you reposition the end-stop during commissioning rather than swapping to a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify the 125mm bore, 60mm stroke, 40mm adjustment, PT port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet. Because the stroke is under 300mm, side-load stress on the M27x2 rod thread is minimal, though external guides are still recommended for heavy lateral loads.
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 SAIJ125AX60-40S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa the push force increases to 8590N.
The rear adjuster screw lets you mechanically shorten the retract stroke by up to 40mm, creating a usable travel window of 20-60mm. It functions as a physical stop, so the cylinder still requires live air to move and hold the load.
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