Airtac SAIJ100 Adjustable Cylinder SAIJ100AX300-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX300-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 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 SAIJ100AX300-40S
The AirTAC SAIJ100X300-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 300 mm stroke that can be dialed back by up to 40 mm, giving you a precise 260-300 mm usable travel window for exact end-position tuning. In this configuration, the 25 mm piston rod is built from SUS420J2 stainless steel (code A) for superior corrosion resistance, and the body uses PT tapered port threads.
The extruded aluminum barrel includes sensor grooves on both sides, and because this model includes a magnet (-S), it works seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches. The rear adjuster acts purely as a travel stop for deceleration, so it will not hold a load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX300-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX300-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100AX300-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100AX300-40S Is Used
Variable End-Stop Positioning
Dial in the exact clamping depth between 260 and 300 mm during product changeovers without physically replacing the cylinder or bolting on external stops.
Commissioning Fine-Tune
Use the 40 mm rear adjustment window to perfectly time the end-of-stroke position during machine setup, absorbing mechanical tolerances on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX300-40S the Right Cylinder?
The adjustable 260-300 mm window is ideal for machine setups requiring commissioning fine-tune or product-size changeovers without swapping out the entire cylinder or adding external stops. For load-holding without continuous air pressure, this cylinder is insufficient as the adjuster is only a stop; you should look at the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 300 mm stroke, 40 mm adjustment range, PT port threads, and the -S magnet requirement. Because this is a 300 mm stroke, the 25 mm rod and M20x1.5 rod thread carry substantial side-load capacity, but an external guide is still recommended for long unsupported travels. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ100AX300-40S FAQ
The rear adjuster allows you to shorten the effective travel by up to 40 mm from the nominal 300 mm stroke. This creates a 260-300 mm usable travel window for fine-tuning the end position at commissioning. The adjuster acts only as a travel stop and does not lock or hold the load without live air pressure.
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