Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20 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 SAIJ100BX75-20
The AirTAC SAIJ100X75-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 55 to 75 mm, allowing you to trim the nominal 75 mm stroke by up to 20 mm during commissioning. Operating at 0.5 MPa, it delivers 3927 N of thrust to move heavy loads.
This model features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. It retains the standard extruded aluminum barrel with dual sensor grooves, though it omits the FB, CA, CB, and CR mounting options found on fixed-stroke variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20 |
|---|---|
| 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 SAIJ100BX75-20
| 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 SAIJ100BX75-20 Is Used
Stroke Fine-Tuning
Dial in the exact end-of-stroke position within the 55-75 mm window during machine commissioning to perfect product handling without external stops.
Product Changeover
Quickly adapt the cylinder's effective travel on a packaging line to accommodate different product sizes, reducing downtime between runs.
Corrosive Assembly
Leverage the SUS304 stainless steel rod and 3927 N of thrust to execute heavy assembly tasks in environments where standard carbon steel rods would fail.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX75-20 the Right Cylinder?
Choose this adjustable-stroke cylinder when your machine setup requires fine end-position tuning without swapping components or bolting on external stops. If you need less force, the 80 mm bore provides 2513 N at 0.5 MPa; if you need more, the 125 mm bore offers 6136 N. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air—use a SAIL or BSAI cylinder for pneumatic locking. To replace this ISO 15552 cylinder, match the 100 mm bore, 75 mm stroke, 20 mm adjustment, PT G1/2 port, and SUS304 rod material.
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 SAIJ100BX75-20 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the 75 mm nominal stroke down to as little as 55 mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
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