Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-100S 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 SAIJ125X260-100S
The AirTAC SAIJ125X260-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 6136N push force at 0.5 MPa, scaling up to 11045N at 0.9 MPa, making it ideal for heavy-duty automation. The built-in -S magnet enables precise position detection using AirTAC CMSE reed or DMSE electronic sensors housed within the dual-side sensor grooves.
This specific SKU features a 260mm nominal stroke paired with a 100mm adjustment range, providing a wide 160-260mm usable travel window. This allows operators to dial in the exact retract end-position during commissioning or product changeovers without swapping the cylinder or adding external stops. The cylinder features a carbon steel rod, PT tapered ports, and variable air cushions at both ends to manage deceleration.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-100S |
|---|---|
| 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 SAIJ125X260-100S
| 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 SAIJ125X260-100S Is Used
Variable End-Stop Machining
Dial in the retract position from 160 to 260mm to accommodate different part lengths on the same fixture without physically swapping cylinders or adding external mechanical stops.
Product Changeover Setup
Quickly recalibrate the stroke end-position during packaging line format changes, using the 100mm adjustment range to fine-tune travel for varying box or product dimensions.
Heavy-Duty Forming Press
Leverage the 6136N push force at 0.5 MPa for pressing and forming operations, while using the rear adjuster to limit travel and prevent over-travel during setup.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X260-100S the Right Cylinder?
Choose this 125mm bore when your application requires substantial thrust that smaller bores cannot provide; stepping down to a 100mm bore reduces push force to 3927N at 0.5 MPa, while stepping up to a 160mm bore increases it to 10053N. The 100mm adjustable window is highly advantageous for machines processing varying product sizes, allowing rapid end-stop recalibration. For replacements, match the 125mm bore, 260mm stroke, 100mm adjuster, PT port threads, and -S magnet requirement.
Remember that the rear adjuster acts strictly as a travel stop and the air cushions manage deceleration—neither holds the load without live air pressure. If your application requires true load-holding during air loss, consider the AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinders instead. Additionally, with a 260mm stroke, ensure adequate external guiding to prevent excessive side-loading on the rod.
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 SAIJ125X260-100S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. If higher pressure is available, it delivers 8590N at 0.7 MPa and up to 11045N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you trim the effective stroke back by up to 100mm from the 260mm nominal length, creating a 160-260mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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