Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S
The AirTAC SAIJ100X145-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 145 mm stroke that can be dialed back by up to 75 mm, creating a highly flexible 70-145 mm usable travel window for precise end-position tuning at commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles substantial workloads without needing external stops.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a built-in magnet (-S) compatible with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the rear adjuster acts purely as a travel stop to decelerate the load, meaning it will not hold the load in place without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAIJ100BX145-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100BX145-75S Is Used
Product Changeovers
Dial in the exact 70-145 mm retract distance during format changes without physically swapping cylinders or adding external mechanical stops.
End-Position Tuning
Fine-tune the final retract position during machine commissioning to perfect pressing or clamping depth on the fly.
Variable Assembly Stops
Adapt the stroke window on automated lines to accommodate different part sizes, using the rear stopper to set precise travel limits.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX145-75S the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires 3927 N push force at 0.5 MPa (or 5497 N at 0.7 MPa) alongside highly variable end-stops. If your process needs less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa; if you need more power, a 125 mm bore provides 6136 N. The adjustable stroke is ideal for product changeovers on a line, allowing you to fine-tune the retract end-position without swapping the cylinder. For load-holding without live air, consider an AirTAC SAIL or BSAI cylinder instead, as the SAIJ adjuster is not a lock.
When matching this ISO 15552 interchangeable cylinder for a retrofit, verify the 145 mm stroke, 75 mm adjustment range, PT tapered G1/2 port, and -S magnet. Because the stroke is 145 mm, ensure your mounting setup handles side loads correctly; long unsupported strokes still require an external guide. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ100BX145-75S FAQ
The rear adjusting screw acts as a mechanical stop that lets you shorten the effective stroke by up to 75 mm. This creates a usable travel window of 70-145 mm, allowing you to fine-tune the retract end-position without replacing the cylinder.
At 0.5 MPa operating pressure, the SAIJ100X145-75-S provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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