Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX400-50 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 SAIJ100AX400-50
The AirTAC SAIJ100X400-50 is a double-acting ISO 15552 profile cylinder featuring a 100mm bore and a 400mm stroke. A rear-mounted stroke adjuster allows you to trim the effective travel back by up to 50mm, providing a usable 350-400mm positioning window. This built-in adjustability lets you fine-tune the retract end-position at commissioning without bolting on external stops or swapping the cylinder.
The piston rod uses SUS420J2 stainless steel (code A) for superior corrosion resistance, and the extruded aluminum barrel includes sensor grooves on both sides. The rear adjuster acts purely as a mechanical stop to set the travel end and does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50 |
|---|---|
| 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 SAIJ100AX400-50
| 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 SAIJ100AX400-50 Is Used
Variable End-Stop Forming
Dial in the exact 350-400mm retract distance for metal forming presses, allowing rapid accommodation of different material thicknesses without changing the cylinder.
Machine Changeover Setup
Fine-tune the end position during production line format changes, using the 50mm adjustment window to match new product dimensions on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX400-50 the Right Cylinder?
The 50mm adjustment range is ideal for product changeovers where the exact retract distance varies slightly, eliminating the need to maintain multiple fixed-stroke SAI cylinders for each job. Because the 400mm stroke is substantial, an external guide is recommended to prevent rod side-load wear on the long unsupported travel.
For an exact ISO 15552 replacement, match the 100mm bore, 400mm stroke, 50mm adjustment, PT tapered port thread, and SUS420J2 rod material. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. If your machine requires the load to stay clamped during a complete air loss, select a SAIL or BSAI cylinder instead, as the SAIJ adjuster cannot hold position without live air.
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 SAIJ100AX400-50 FAQ
At 0.9MPa, the push force increases to 7068N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 400mm nominal stroke by up to 50mm, resulting in a usable travel window of 350-400mm. It sets the end position but does not lock the load without continuous air pressure.
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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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Related AirTAC SAI Cylinders
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