Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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.
- BoreØ100 mm
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40
The AirTAC SAIJ100X300-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 260-300 mm usable travel window. Delivering 3927 N of push force at 0.5 MPa, it uses a G1/2 port and a 25 mm carbon steel rod to handle heavy loads. The extruded aluminum barrel includes sensor grooves on both sides.
This adjustable-stroke design allows you to fine-tune the retract end position during commissioning without swapping the cylinder or adding external stops. The rear mechanism acts purely as a travel stop and works alongside the standard 36 mm air cushions to decelerate the load, but it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100 Adjustable Cylinder SAIJ100X300-40 Is Used
Variable End-Stop Tooling
Dial in the exact retract position for multi-format machining operations using the 40 mm adjustment window.
Product Changeover
Quickly adapt downstream conveyor diverts to new package lengths without physically replacing the actuator.
Heavy Load Positioning
Leverage the 3927 N push force at 0.5 MPa to shift heavy pallets while fine-tuning the stopping distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40 the Right Cylinder?
Choose this 100 mm bore when the 80 mm class (2513 N push at 0.5 MPa) is insufficient for your tooling. The -40 adjustment code is ideal for product changeovers requiring a variable end-stop within a 260-300 mm range, unlike a fixed-stroke SAI cylinder. To match this ISO 15552 interchangeable cylinder, specify the 300 mm stroke, 40 mm adjustment, PT tapered port threads, and standard carbon steel rod.
Because the 300 mm stroke is relatively long, the 25 mm rod and M20x1.5 thread still require an external guide to prevent excessive side-loading on the assembly. Note that for load-holding without live pressure, you must use an external rod lock or pilot-operated check valve, as the adjuster is not a brake.
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 SAIJ100 Adjustable Cylinder SAIJ100X300-40 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the 300 mm nominal stroke by up to 40 mm, providing an effective travel window of 260-300 mm. It functions as a physical stop to set the end position and is not a locking device.
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