Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-20 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 SAIJ100BX210-20
The AirTAC SAIJ100X210-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down to 190 mm from the 210 mm nominal stroke. Built with a robust 25 mm SUS304 stainless steel rod, it delivers 5497 N of push force at 0.7 MPa, making it suitable for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model uses PT tapered port threads (G1/2) and relies on a variable air cushion at both ends to decelerate the load. The rear adjuster acts purely as a mechanical stop to set the retract end position during commissioning; it does not lock or hold the load without continuous live air pressure. For applications requiring position holding without air, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-20 |
|---|---|
| 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 SAIJ100BX210-20
| 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 SAIJ100BX210-20 Is Used
Machine Setup Changeover
Dial in the exact 190 to 210 mm retract position during product family changeovers without physically replacing the cylinder or shimming external stops.
Variable End-Stop Positioning
Provide an adjustable mechanical stop for heavy pallets or workpieces requiring precise end-of-stroke tuning at commissioning before applying full air pressure.
Heavy-Duty Assembly Pressing
Leverage the 5497 N push force at 0.7 MPa to seat large components, using the rear adjuster to fine-tune the final pressing depth within a 20 mm window.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-20 the Right Cylinder?
Choose this 100 mm bore when a smaller 80 mm cylinder (providing 3518 N push at 0.7 MPa) lacks the necessary thrust, but before stepping up to a 125 mm unit that outputs 8590 N. The 20 mm adjustable window is ideal for product changeovers on a line, letting you shift the end-stop by a few millimeters without swapping the cylinder or adding external stops. To match this ISO 15552 footprint exactly, specify the 100 mm bore, 210 mm stroke, 20 mm adjustment, PT port thread, and your required mounting hardware.
Because the 210 mm stroke is relatively long, ensure adequate external guidance to prevent excessive side-loading on the SUS304 rod, even with its robust 25 mm diameter. This SAIJ configuration supports the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting styles, omitting the FB, CA, CB, and CR options found on some other variants.
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 SAIJ100BX210-20 FAQ
At a 0.7 MPa operating pressure, this 100 mm bore cylinder provides 5497 N of push force and 5148 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a usable travel window of 190 to 210 mm. This stopper sets the end position but does not lock the load without live air pressure.
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