Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20
The AirTAC SAIJ100X140-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5MPa. With a nominal 140mm stroke and a 20mm adjustment range, it provides a usable travel window of 120-140mm. This allows you to dial in the exact end position during commissioning without adding external stops or swapping the cylinder.
This configuration features a SUS420J2 stainless steel rod for improved corrosion resistance and utilizes PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 140 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 SAIJ100AX140-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×140 | 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 SAIJ100AX140-20 Is Used
End-Position Tuning
Dial in the exact 120-140mm travel window during machine commissioning to compensate for mechanical tolerance without disassembling the line.
Product Changeover
Quickly shorten the retract stroke by up to 20mm to accommodate different product sizes on the same conveyor setup.
Heavy Load Positioning
Leverage the 3927N push force at 0.5MPa to move heavy pallets or fixtures into a precise final stop position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX140-20 the Right Cylinder?
Choose this 100mm bore when an 80mm bore (2513N push at 0.5MPa) lacks the necessary thrust, but you want to avoid stepping up to a 125mm cylinder which operates at a slower 30-500mm/s speed range. The 100mm bore runs at 30-800mm/s and handles heavy loads efficiently. The rear adjuster acts purely as a travel stop to fine-tune the 120-140mm window on product changeovers; it does not hold the load without live air. For true load-holding without pressure, select a SAIL or BSAI cylinder instead.
To match this ISO 15552 dimensionally interchangeable cylinder, specify a 100mm bore, 140mm stroke, 20mm adjustment, PT G1/2 ports, and the desired mounting style. Because the rod diameter is 25mm with an M20x1.5 thread, it handles side loads well, though long unsupported strokes still require an external guide.
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 SAIJ100AX140-20 FAQ
At a 0.5MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective travel back from the nominal 140mm down to 120mm. This creates a 20mm adjustable window for fine-tuning the end position without replacing the cylinder.
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