Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX400-20S 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 SAIJ100AX400-20S
The AirTAC SAIJ100X400-20-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 400 mm travel that can be fine-tuned down by up to 20 mm, giving an exact usable window of 380 to 400 mm.
This specific configuration includes a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and a magnet for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches mounted into the dual-side sensor grooves on the extruded aluminum barrel. The PT tapered port threads and integrated adjustable air cushions ensure secure, leak-free pneumatics and smooth end-of-stroke deceleration.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-20S |
|---|---|
| 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 SAIJ100AX400-20S
| 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 SAIJ100AX400-20S Is Used
Variable End-Stop Tuning
Dial in the exact 380 to 400 mm retract position during machine setup to accommodate varying workpiece lengths without adding mechanical spacers.
Automated Clamping Stations
Fine-tune the clamping depth on the fly to prevent workpiece deformation, utilizing the smooth deceleration of the adjustable air cushions at both ends.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-20S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, such as 5497 N at 0.7 MPa, stepping up from a 63 mm bore that provides 2182 N. The adjustable-stroke mechanism is selected over a fixed SAI cylinder when you need to dial in the precise retract end-position during machine commissioning or product changeovers without physically swapping hardware. Because the 400 mm stroke is relatively long, an external guide is recommended to prevent excessive rod side-loading and premature seal wear.
For dimensionally interchangeable ISO 15552 replacements, match the 100 mm bore, 400 mm stroke, 20 mm adjustment range, PT G1/2 port, and the -S magnet option. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series instead. The SAIJ mounting set includes 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 SAIJ100AX400-20S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 20 mm, providing a usable travel window of 380 to 400 mm. This allows precise end-position tuning at commissioning without swapping the cylinder, though it acts only as a stop and does not lock the load without live air.
At the maximum operating pressure of 1.0 MPa, the cylinder delivers a maximum push force of 801 kgf.
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