Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S
The AirTAC SAIJ100X55-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 55 mm stroke that can be fine-tuned down by up to 20 mm, creating a precise 35-55 mm usable travel window during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads without needing external stops.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. It is fully dimensionally interchangeable with ISO 15552 cylinders. The mounting set is comprehensive yet specific, utilizing Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets while omitting FB, CA, CB, and CR options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100BX55-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100BX55-20S Is Used
Machine Setup Changeover
Quickly fine-tune the 35-55 mm end position during machine changeovers to accommodate different product sizes without replacing the actuator.
Heavy Material Forming
Leverage the 3927 N push force at 0.5 MPa for pressing or forming tasks that require precise, adjustable end-stops to prevent overtravel.
Washdown Positioning
Utilize the SUS304 stainless steel rod and adjustable stroke for robust, corrosion-resistant actuation in demanding or hygienic environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20S the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust, such as the 3927 N push force at 0.5 MPa, which is a major step up from the 50 mm bore's 982 N. The adjustable stroke is ideal for product-size changeovers on a line, allowing you to dial in the exact end position without swapping the cylinder. Because the 55 mm stroke is relatively short, side-load risks are minimal, but always ensure the load is guided externally.
The rear screw acts purely as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider the SAIL or BSAI series. This model includes a -S magnet compatible with AirTAC CMSE reed and DMSE electronic sensors. For an exact ISO 15552 replacement match, verify the 100 mm bore, 55 mm stroke, 20 mm adjustment, PT tapered port thread, and your required mounting bracket.
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 SAIJ100BX55-20S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides a push force of 3927 N and a pull force of 3681 N. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the 55 mm nominal stroke by up to 20 mm. This creates a usable travel window of 35-55 mm, letting you set the exact retract position at commissioning without adding external stops.
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