Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-50
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-50 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 SAIJ125X60-50
The AirTAC SAIJ125X60-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 6136 N push force at 0.5 MPa, making it ideal for heavy-duty operations. The integrated PT tapered port threads ensure a tight, leak-free pneumatic connection directly at the G1/2 port.
This specific configuration features a 60 mm nominal stroke paired with a 50 mm adjustment range, yielding a highly versatile usable travel window of 10 to 60 mm. You can fine-tune the end position at commissioning without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, allowing you to easily add CMSE reed or DMSE electronic sensors later if positioning feedback becomes necessary.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-50 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-50 |
|---|---|
| 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 SAIJ125X60-50
| 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 SAIJ125X60-50 Is Used
Variable End-Stop Positioning
Dial in precise end positions between 10 and 60 mm during machine setup, accommodating multiple product sizes without physically changing the actuator.
Heavy Forming Press
Leverage the 6136 N push force at 0.5 MPa for high-tonnage pressing, using the rear stopper to finely tune the bottoming depth for different material thicknesses.
Adjustable Ejector Stroke
Control part ejection distance on an assembly line by trimming the stroke back up to 50 mm, preventing parts from being thrown too far during transfer.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-50 the Right Cylinder?
Select this 125 mm bore actuator when your application requires substantial thrust—stepping down to a 100 mm bore would reduce your push force to 3927 N at 0.5 MPa, while stepping up to a 160 mm bore yields 10053 N. The adjustable stroke is perfect for product-size changeovers on a packaging line, allowing operators to dial in the exact 10 to 60 mm travel needed on the fly instead of machining custom spacers.
When specifying a replacement, ensure you match the 125 mm bore, 60 mm stroke, 50 mm adjustment code, PT port threads, and carbon steel rod material. Because this model lacks the -S magnet suffix, it will not work with Hall effect sensors out of the box. Remember that the rear adjuster acts purely as a travel stop to set deceleration; it does not hold the load without live air. For true load-holding without pneumatic pressure, consider the SAIL locking cylinder or an external rod lock.
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 SAIJ125X60-50 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. If operated at 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from its 60 mm nominal length down to as little as 10 mm. This provides a 10-60 mm usable window for fine-tuning the retract end position during commissioning without needing external stops.
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