Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-40S 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 SAIJ100BX475-40S
The AirTAC SAIJ100X475-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 7068N of push force at 0.9 MPa and provides a usable travel window of 435 to 475 mm. The built-in rear stopper lets you dial back the nominal 475 mm stroke by up to 40 mm during commissioning, removing the need to swap the cylinder or bolt on external stops when fine-tuning end positions.
This -S variant includes a magnet for CMSE reed and DMSE electronic sensors, fitting into the dual-side extruded barrel grooves. The piston rod is SUS304 stainless steel, offering high corrosion resistance, and the PT tapered port ensures a robust pneumatic connection. The rear adjuster acts purely as a travel stop to set deceleration and end limits, not as a lock to hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-40S |
|---|---|
| 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 SAIJ100BX475-40S
| 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 SAIJ100BX475-40S Is Used
Changeover Calibration
Dial in the exact 435-475 mm travel window during product size changeovers on packaging lines without swapping out the entire actuator.
End-Stop Tuning
Fine-tune the final retract position at machine commissioning using the rear screw, eliminating the need to fabricate custom external stopper blocks.
Variable Diverter Arm
Adjust the stroke on the fly to accommodate different package widths on a sorting conveyor, ensuring precise routing without hardware changes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX475-40S the Right Cylinder?
Choose this 100 mm bore cylinder when you need substantial thrust (3927N at 0.5 MPa) alongside precise end-position tuning. If your application requires less force, stepping down to an 80 mm bore yields 2513N at 0.5 MPa, while moving up to a 125 mm bore provides 6136N. The adjustable stroke is perfect for machine setups requiring variable end stops or frequent product changeovers, unlike a fixed-stroke SAI cylinder.
Because the 475 mm stroke is relatively long, the 25 mm rod diameter will still experience leverage forces under side-loading, so an external guide is recommended for unsupported loads. If your process demands true load-holding without continuous air pressure, this cylinder will not suffice; consider the SAIL lock or BSAI clamp-lock series instead. It is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set: 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 SAIJ100BX475-40S FAQ
The rear adjuster screw acts as an external stopper that shortens the effective stroke. For this model, you can trim the 475 mm nominal stroke back by up to 40 mm, creating a usable travel window of 435 to 475 mm. It sets the travel end and deceleration point, but does not lock or hold the load without live air pressure.
At 0.9 MPa operating pressure, the push force is 7068N and the pull force is 5497N. At a standard 0.5 MPa, it provides 3927N of push force and 3681N of pull force.
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