Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20
The AirTAC SAIJ100X400-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window between 380 and 400 mm. Delivering a robust 7068N of push force at 0.9 MPa, it handles heavy loads while maintaining standard ISO 15552 mounting interchangeability. The extruded aluminum barrel includes sensor grooves on both sides for flexible position detection.
This model features a carbon steel piston rod with an M20x1.5 thread, paired with a G1/2 port. The rear adjustment screw acts purely as a travel stop to decelerate the load at the end of the stroke; it does not lock the load in place without live air pressure. For true load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20 |
|---|---|
| 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 | 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 SAIJ100X400-20
| 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 SAIJ100X400-20 Is Used
Machine Changeover
Dial in the 380-400mm travel window during product size transitions to set new end stops without physically replacing the actuator.
Material Handling
Pushes heavy pallets or workpieces with 7068N of force at 0.9 MPa while allowing quick repositioning of the retract stop.
Assembly Line Tuning
Fine-tune the exact retraction point during equipment commissioning to achieve perfect alignment with downstream processes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X400-20 the Right Cylinder?
Choose this adjustable-stroke model when you need precise end-position tuning during commissioning or frequent product changeovers without swapping the cylinder or adding external stops. If your application requires less force, stepping down to the 80mm bore yields 4523N of push force at 0.9 MPa; if you need more, the 125mm bore provides 11045N. Because this cylinder has a 400mm stroke, the long unsupported rod is susceptible to side-loading, so an external guide rail is recommended to prevent premature seal wear.
When ordering, confirm the bore (100mm), stroke (400mm), adjustment range (20mm), PT tapered port thread, and your required mounting style. SAIJ supports a reduced set of mounting options: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits the FB, CA, CB, and CR mounts found on some other series.
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 SAIJ100X400-20 FAQ
The rear adjuster screw lets you trim the nominal 400mm stroke back by up to 20mm, creating a usable travel window of 380-400mm. This allows you to set the exact end position during commissioning without adding external mechanical stops.
At 0.9 MPa operating pressure, the 100mm bore provides 7068N of push force and 3681N of pull force. It operates at speeds between 30 and 800 mm/s.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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