Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S
The AirTAC SAIJ100X145-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to fine-tune the end position during commissioning. It provides a usable travel window of 125 to 145 mm, allowing you to dial back the stroke by up to 20 mm without adding external stops. In this -S configuration, the piston magnet works directly with AirTAC CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves for precise position feedback.
Delivering 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa, this 100 mm bore actuator handles heavy loads with ease. It features a SUS420J2 stainless steel rod for improved corrosion resistance and utilizes PT tapered port threads. The rear adjuster acts purely as a mechanical stop to set the travel end, meaning it will not hold a load dynamically without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAIJ100AX145-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SAIJ100AX145-20S Is Used
Machine Changeover
Dial in the 125-145 mm travel window during product size transitions without physically swapping the actuator or bolting on external stop blocks.
End-Position Tuning
Fine-tune the retract stroke by up to 20 mm at commissioning to perfect the seating pressure of heavy tooling driven by the 7068 N force.
Assembly Line Indexing
Use the DMSE electronic sensors to confirm stroke endpoints while relying on the rear stopper to maintain strict mechanical positioning for varying component sizes.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX145-20S the Right Cylinder?
Choose this 100 mm bore when your application requires the 3927 N push force at 0.5 MPa, stepping up from a 63 mm bore that yields 1559 N. The adjustable stroke is ideal for product changeovers or machine setups where the exact end-of-travel position needs fine-tuning on the fly, rather than relying on a fixed-stroke SAI cylinder. To match this ISO 15552 interchangeable cylinder exactly, specify the 100 mm bore, 145 mm stroke, 20 mm adjustment, PT port thread, and the -S magnet option.
Because the 145 mm stroke is well below the 1500 mm maximum, side-load stress is minimal, though the robust 25 mm rod and M20x1.5 thread provide excellent support for offset loads. Remember that the rear adjuster and air cushions only decelerate the stroke; they do not lock the load. If your setup requires true load-holding without continuous air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ100AX145-20S FAQ
The rear adjusting screw acts as a mechanical stopper that lets you shorten the effective travel from the nominal 145 mm down to 125 mm. This creates a 20 mm adjustable window for fine-tuning the end position at commissioning without changing the cylinder.
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
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