Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20
The AirTAC SAIJ100X30-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. With a nominal stroke of 30mm and a 20mm adjustment range, it provides a highly precise 10-30mm usable travel window for dialing in exact end positions during commissioning. This model features a SUS304 stainless steel piston rod and PT tapered port threads, making it well-suited for environments where corrosion resistance is a factor.
The rear adjuster acts purely as a mechanical stop to fine-tune the retract position without adding external stops, while the standard air cushions at both ends handle deceleration. It supports a speed range of 30-800mm/s and utilizes a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on other variants.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAIJ100BX30-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SAIJ100BX30-20 Is Used
Machine Changeover
Quickly dial in the 10-30mm travel window during product size changeovers without swapping out the entire cylinder assembly.
End-Stop Calibration
Fine-tune the retract position during initial commissioning to achieve perfect mechanical alignment without external stopper blocks.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for reliable clamping and positioning in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX30-20 the Right Cylinder?
Choose this 100mm bore adjustable-stroke cylinder when your application requires exact end-position tuning at machine setup or during product changeovers, avoiding the need to physically swap cylinders or bolt on external stopper blocks. If your setup demands less force, stepping down to an 80mm bore yields 2513N of push force at 0.5 MPa, but the 100mm bore is necessary for heavier payloads requiring up to 801kgf at 1.0 MPa. Because this is a short 30mm stroke, side-loading is less of a concern than with longer travels, but always ensure the load is guided to prevent rod binding.
For a drop-in ISO 15552 replacement, match the 100mm bore, 30mm nominal stroke, 20mm adjustment, PT port thread, and SUS304 (B) rod material. Note that this plain SAIJ model does not include a magnet; if position sensing is required, you would need an -S variant to utilize AirTAC CMSE reed or DMSE electronic solid-state sensors. Remember that the rear adjuster is a travel stop, not a locking mechanism; for load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ100BX30-20 FAQ
At 0.5 MPa, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 801kgf.
The SAIJ100X30-20 has a nominal stroke of 30mm with a 20mm adjustment code, creating a usable travel window of 10 to 30mm. A rear screw acts as a mechanical stop to trim the retract position, but it does not lock the load without live air pressure.
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