Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20
The AirTAC SAIJ100X75-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. With a nominal stroke of 75 mm and a 20 mm adjustment range, it provides a usable travel window of 55 to 75 mm for precise end-position tuning at commissioning. In this bore size, the carbon steel piston rod is 25 mm thick with an M20x1.5 thread, offering robust resistance to side loads, while the G1/2 PT port handles the air supply for a thrust output of 3927 N at 0.5 MPa.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The rear screw acts purely as a travel stop to set the retract end position, meaning it will not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series, or an external pilot-operated check valve. The extruded aluminum barrel includes sensor grooves on both sides, compatible with CMSE reed and DMSE electronic sensors if a magnet is specified.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 75 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 SAIJ100X75-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×75 | 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 SAIJ100X75-20 Is Used
Product Changeover
Dial in the 55-75 mm travel window during line changeovers to accommodate different product lengths without swapping the entire cylinder assembly.
Commissioning Calibration
Fine-tune the retract end-position during initial machine setup using the rear adjuster, ensuring precise alignment without adding external mechanical stops.
High-Force Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy fixtures into their final machined position, stopping accurately within the 20 mm adjustment band.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20 the Right Cylinder?
Choose this 100 mm bore cylinder when an application requires substantial force (3927 N push at 0.5 MPa) alongside variable end-stops. If your setup demands less thrust, stepping down to the 80 mm bore yields 2513 N of push force at 0.5 MPa, whereas moving up to the 125 mm bore provides 6136 N. The adjustable 55-75 mm travel window is ideal for machine setups requiring frequent product-size changes without mechanical retooling.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 75 mm stroke, 20 mm adjustment, G1/2 PT port, and mounting style. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Although the 25 mm rod handles side loads well, any stroke exceeding 300 mm requires an external guide rod to prevent premature wear.
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 SAIJ100X75-20 FAQ
At a 0.5 MPa operating pressure, the SAIJ100X75-20 generates 3927 N of push force and 3681 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjuster allows you to shorten the effective stroke from its 75 mm nominal length down to 55 mm, creating a 55-75 mm usable travel window. This stopper sets the travel end but does not lock the load without live air pressure.
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