Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX400-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 400mm 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
- Stroke400 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 SAIJ100BX400-20S
The AirTAC SAIJ100X400-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 380 to 400 mm. The barrel features dual sensor grooves, and because this unit includes the -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection.
This model features a SUS304 stainless steel rod (option B) for superior corrosion resistance and carries a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning; it does not lock the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100BX400-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SAIJ100BX400-20S Is Used
Product Changeovers
Dial in the 380-400 mm retract end-stop during format changes without physically swapping the cylinder or repositioning external mechanical stops.
Machine Setup
Fine-tune the final end position at commissioning to achieve exact positioning, absorbing mechanical tolerances in the fixture.
Variable End Stops
Adjust the retract distance on the fly for sorting or diverting operations where the physical actuation point varies by batch.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX400-20S the Right Cylinder?
The adjustable 20 mm retract window is ideal for product changeovers on a line, allowing you to dial in the exact end-stop without swapping cylinders or adding external stops. When replacing an ISO 15552 cylinder, match the 100 mm bore, 400 mm stroke, PT port, and -S magnet.
Because the 400 mm stroke is substantial, the 25 mm rod diameter should still be paired with an external guide to prevent excessive side-loading on the piston. Mounting options for this profile cylinder include Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ100BX400-20S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 20 mm, creating a 380 to 400 mm travel window. It functions as a mechanical stop to set the end position and does not hold the load without live air pressure.
At the maximum 1.0 MPa pressure, the push force reaches 801 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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