Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX25-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 25mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S
The AirTAC SAIJ100X25-20-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 100mm bore and a 25mm nominal stroke, but the integrated stopper screw allows you to dial back the travel by up to 20mm. This creates a highly versatile 5 to 25mm usable stroke window, letting you fine-tune end positions at commissioning without swapping out the physical cylinder or adding bulky external stops.
This specific SKU is built with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. It is fully dimensionally interchangeable per ISO 15552 and uses a PT G1/2 port.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×25 | 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 SAIJ100BX25-20S Is Used
Precision End-Stop Tuning
Dial in the exact 5 to 25mm travel window during machine commissioning to achieve perfect positioning without machining custom spacers.
Product Changeover
Quickly adjust the rear stopper screw to accommodate varying package sizes on a conveyor line, minimizing downtime between production runs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX25-20S the Right Cylinder?
An adjustable stroke is selected over a fixed SAI model when a machine requires variable end-stops to handle multiple product sizes on a single line. Because the total travel is only 25mm, you achieve highly compact, fine-tuned motion control.
This cylinder uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR options. The rear adjuster acts solely as a travel stop to set deceleration; it does not hold the load without live air. For true load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI series cylinder. The -S magnet works seamlessly with AirTAC CMSE (reed) and DMSE (solid-state) sensors.
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 SAIJ100BX25-20S FAQ
The rear stopper screw lets you trim the effective travel by up to 20mm. With the 25mm nominal stroke, this provides an adjustable usable stroke window of 5 to 25mm, allowing precise end-position tuning without changing the cylinder.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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