Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S
The AirTAC SAIJ100X210-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 210 mm stroke that can be fine-tuned down by up to 50 mm, giving operators a precise 160-210 mm usable travel window during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles substantial workloads while utilizing a SUS304 stainless steel rod for superior corrosion resistance.
This variant includes a built-in magnet for position sensing and uses PT tapered ports sized at G1/2. The extruded aluminum barrel features sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic solid-state switches. Adjustment is achieved mechanically at the rear stopper, meaning you can dial in the exact end position without adding external stops or swapping the cylinder.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 210 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 SAIJ100BX210-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×210 | 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 SAIJ100BX210-50S Is Used
Product Changeover
Dial in the 160-210 mm travel window during format size changes on a packaging line without physically replacing the cylinder.
End-Stop Calibration
Fine-tune the retract position to the exact millimeter during machine commissioning to prevent crushing delicate workpieces.
Heavy Forming Operations
Leverage the 3927 N push force at 0.5 MPa for pressing or forming tasks where the bottom dead center needs minor mechanical adjustment.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50S the Right Cylinder?
Select this 100 mm bore when an application requires heavy thrust—such as 3927 N push at 0.5 MPa—and on-the-fly end-position tuning. If you need less force, stepping down to an 80 mm bore yields 2513 N, whereas moving up to 125 mm provides 6136 N. Choose the SAIJ adjustable design over a fixed SAI cylinder when machine setups involve frequent product changeovers or require precise positioning that a fixed stroke cannot guarantee.
Because this is a 210 mm stroke, the M20x1.5 rod thread and 25 mm rod diameter provide robust support, but an external guide should still be used for heavy lateral loads. The rear adjuster acts strictly as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series. This SAIJ model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It is dimensionally interchangeable per ISO 15552.
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 SAIJ100BX210-50S FAQ
At 0.5 MPa, this 100 mm bore cylinder generates 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N. The operational speed range is 30-800 mm/s.
The rear mechanical stopper allows you to shorten the 210 mm nominal stroke by up to 50 mm, creating a usable travel window of 160-210 mm. This stopper only sets the travel end point; it does not lock the load without continuous air pressure.
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