Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50S 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 SAIJ100BX475-50S
The AirTAC SAIJ100X475-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N of push force at 0.5 MPa and features a 475mm nominal stroke that can be dialed back by up to 50mm, yielding a precise 425-475mm usable travel window. This adjustability allows you to fine-tune end positions at commissioning without swapping the cylinder or adding external stops.
Built with a SUS304 stainless steel rod for superior corrosion resistance, this model includes a magnet for CMSE and DMSE sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the rear adjuster acts purely as a mechanical stop to set the travel end, not a lock to hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50S |
|---|---|
| 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 SAIJ100BX475-50S
| 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 SAIJ100BX475-50S Is Used
Variable End-Stop Machining
Fine-tune the 425-475mm travel window to accommodate different part lengths during machining setups without physically swapping the actuator.
Product Line Changeover
Quickly adjust the rear stopper when switching the production line to a new product size, reducing machine downtime and setup effort.
Conveyor Diverter Setup
Dial in the exact pusher extension distance during commissioning to ensure packages are diverted accurately at varying conveyor speeds.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-50S the Right Cylinder?
Choose this 100mm bore when an 80mm bore (providing 2513N push force at 0.5 MPa) is insufficient, but a 125mm bore (6136N) would be excessive overkill. The adjustable 425-475mm travel window is ideal for product-size changeovers on a line, eliminating the need to maintain multiple fixed-stroke SAI cylinders for varying part lengths.
When replacing an ISO 15552 cylinder, match the 100mm bore, 475mm stroke, 50mm adjustment, PT tapered port threads, and the -S magnet. Because the 475mm stroke is relatively long, the 25mm rod and M20x1.5 thread handle side loads well, but an external guide is still recommended for unsupported loads. For load-holding without live air, use an external rod lock or consider the SAIL or BSAI series, as this cylinder's adjuster and air cushions only decelerate travel, they do not brake.
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 SAIJ100BX475-50S FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the 475mm nominal stroke by up to 50mm. This creates a usable travel window of 425-475mm for fine-tuning the retract end position at commissioning.
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