Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20
The AirTAC SAIJ100X325-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 3927N of push force at 0.5 MPa while featuring a G1/2 port and a 25mm carbon steel piston rod. By turning the external rear stopper screw, you can trim the effective travel back by up to 20mm, creating a precise 305-325mm usable stroke window. This allows for exact end-position calibration during machine commissioning without adding bulky external stops.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic solid-state switches, though this specific SKU is configured without a magnet. It supports a speed range of 30-800mm/s and features variable air cushions at both ends to manage deceleration. Remember that the rear adjuster acts solely as a travel stop and does not hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 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 SAIJ100X325-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×325 | 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 SAIJ100X325-20 Is Used
Machine Setup & Commissioning
Fine-tune the exact end-of-stroke position during initial machine build. The 20mm adjustment window lets you dial in the final 305-325mm of travel without machining custom spacers.
Product Size Changeover
Adapt a packaging line to different carton lengths quickly. The rear adjuster shifts the retracted end-stop to match the new product dimensions on the fly.
Variable End-Stop Positioning
Provide a mechanically adjustable hard stop for heavy actuators. The 25mm rod handles high side loads while the screw sets the precise resting position for each cycle.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20 the Right Cylinder?
Choose this 100mm bore cylinder when your application requires heavy thrust—up to 3927N push and 3681N pull at 0.5 MPa. If your force requirements are lower, stepping down to an 80mm bore reduces the footprint while still providing 2513N of push force. The SAIJ100X325-20 is selected specifically when a fixed 325mm stroke from the standard SAI series is too rigid, allowing you to dial in a 305-325mm travel window to accommodate product size changes on a production line. To match this ISO 15552 replacement exactly, specify the 100mm bore, 325mm stroke, 20mm adjustment range, G1/2 PT tapered port, and the standard carbon steel rod.
Because this model features a 325mm stroke, the unsupported rod extension is significant. Despite the sturdy 25mm rod diameter and M20x1.5 rod thread, you should guide the load externally to prevent excessive side-loading and premature seal wear. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations, deliberately 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 SAIJ100X325-20 FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjusting screw acts as an external stopper that lets you shorten the nominal 325mm stroke by up to 20mm, resulting in a usable travel window of 305-325mm. This stopper only sets the end position; it does not lock or hold the load without continuous air pressure.
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