Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20S 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 SAIJ100X75-20S
The AirTAC SAIJ100X75-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 5497N of push force at 0.7 MPa, making it suited for heavy-duty actuation. The built-in rear stopper allows you to trim the retract position, providing a usable travel window of 55 to 75 mm for exact end-position tuning during commissioning.
This model includes a magnet for CMSE reed and DMSE electronic sensors, which seat neatly into the dual-side sensor grooves on the extruded aluminum barrel. The carbon steel piston rod features an M20x1.5 thread, and the pneumatic supply connects via a PT G1/2 port. The rear adjuster acts purely as a travel stop to set deceleration, so it will not hold the load without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20S |
|---|---|
| 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 SAIJ100X75-20S
| 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 SAIJ100X75-20S Is Used
Machine Setup Changeovers
Dial in the exact end-stop position when switching product sizes on a line, trimming the stroke by up to 20mm without adding external stops.
Variable End-Position Tuning
Fine-tune the retract distance during commissioning to perfect the mating of heavy components using the 55-75mm travel window.
Heavy-Duty Forming Presses
Leverage the 5497N push force at 0.7 MPa to securely hold and form materials while adjusting the return position to accommodate different die heights.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X75-20S the Right Cylinder?
Choose this 100mm bore when an 80mm cylinder (yielding 3518N push at 0.5 MPa) lacks the necessary thrust, but before stepping up to a 125mm bore. The 20mm adjustment range is perfect for applications requiring variable end-stops or frequent product-size changeovers, eliminating the need to physically swap out a fixed-stroke SAI cylinder. To match this ISO 15552 footprint, ensure you specify the 100mm bore, 75mm stroke, 20mm adjustment, PT G1/2 port, and the -S magnet option.
Because the 75mm stroke is relatively short, side-loading risks are minimal, though the sturdy 25mm rod handles offset loads well. For applications requiring true load-holding without live air, consider the SAIL pneumatic-lock or BSAI clamp-lock series, as the SAIJ adjuster is not a brake. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ100X75-20S FAQ
At a 0.7 MPa operating pressure, this 100mm bore cylinder generates 5497N of push force and 3681N of pull force. It can reach a maximum thrust of 801 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from its 75mm nominal length down to as little as 55mm. This allows precise end-position tuning at commissioning without swapping the cylinder.
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