Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S
The AirTAC SAIJ125X260-75-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It provides a usable travel window of 185 to 260mm, letting you dial back the stroke by up to 75mm. This cylinder includes a SUS420J2 stainless steel rod and a magnet for position sensing.
The rear adjusting screw acts as a mechanical stop to fine-tune end positions at commissioning without swapping the cylinder. It is not a locking device and will not hold loads without live air. You can mount AirTAC CMSE reed or DMSE solid-state sensors in the dual-side barrel grooves.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 260 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 SAIJ125AX260-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×260 | 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 SAIJ125AX260-75S Is Used
Variable End-Stop Setup
Dial in the exact retract distance during machine commissioning, saving the cost of machining custom external stoppers.
Product Changeover
Quickly adapt the stroke window from 260mm down to 185mm on a packaging line when handling different carton sizes.
Heavy Forming Press
Leverage the 6136N pull force to actuate heavy forming dies while fine-tuning the end position to prevent overtravel.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX260-75S the Right Cylinder?
Choose this 125mm bore when 100mm falls short, offering 3927N, or before stepping up to 160mm which yields 10053N. The 75mm adjustment window is ideal for product changeovers on packaging lines, providing a variable end-stop without adding external physical stops. For load-holding without pneumatic pressure, select a SAIL or BSAI cylinder instead.
This SKU uses PT tapered ports and the standard SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 260mm stroke is substantial, always support the load with an external guide to prevent side-loading damage to the 32mm rod and M27x2 thread.
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 SAIJ125AX260-75S FAQ
At 0.5MPa, it provides 6136N of push force and 5734N of pull force. At the maximum 1.0MPa operating pressure, the push force reaches 1251kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from 260mm down to 185mm. It sets the travel end but does not lock the load without live air pressure.
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