Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S
The AirTAC SAIJ100X475-20-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, allowing you to fine-tune the retract end position during commissioning. With a 475 mm nominal stroke and a 20 mm adjustment screw, it provides a usable travel window of 455-475 mm without needing external stops. It delivers 7068N of push force at 0.9 MPa.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a PT tapered port thread. The extruded aluminum barrel features sensor grooves on both sides, and the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for precise position feedback.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 475 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 SAIJ100BX475-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×475 | 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 SAIJ100BX475-20S Is Used
Machine Setup & Changeover
Dial in the exact 455-475 mm end position during product changeovers without swapping the cylinder or adding external mechanical stops.
Variable End-Stop Diverter
Fine-tune the retract distance on a sorting diverter to accommodate different package sizes on the fly.
Heavy-Duty Press Tuning
Adjust the stroke on a high-force press fixture to compensate for material thickness variations while utilizing the 7068N push force.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-20S the Right Cylinder?
Choose this 100 mm bore when your application requires high thrust, such as the 7068N push force at 0.9 MPa or the 3927N at 0.5 MPa. If you need less force, stepping down to an 80 mm bore yields 4523N at 0.9 MPa, while moving up to a 125 mm bore provides 11045N. Because the 475 mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the rod.
The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers. Remember that the rear adjuster acts only as a travel stop and deceleration aid, not a lock; a plain SAIJ does not hold loads without live air. For load-holding without pressure, consider an external rod lock or the BSAI clamp-lock series. To replace this cylinder with another ISO 15552 unit, match the 100 mm bore, 475 mm stroke, 20 mm adjustment, PT G1/2 port, and -S magnet.
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 SAIJ100BX475-20S FAQ
At a 0.9 MPa operating pressure, this 100 mm bore cylinder provides 7068N of push force and 5497N of pull force. At 0.5 MPa, it delivers 3927N push and 3681N pull.
The rear adjusting screw acts as an external stopper, allowing you to shorten the effective stroke by up to 20 mm. This creates a 455-475 mm usable travel window for fine-tuning end positions at commissioning. The adjuster is a stop, not a lock, and cannot hold the load without live air pressure.
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