Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S
The AirTAC SAIJ100X125-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 125 mm stroke that can be dialed back by up to 50 mm, yielding a precise 75-125 mm usable travel window for product changeovers. In the 100 mm bore class, it delivers a robust 3927 N push force at 0.5 MPa and 7068 N at 0.9 MPa.
This variant features a SUS420J2 stainless steel rod for superior corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and because this is a -S model, it arrives magnetized for seamless detection using AirTAC CMSE reed or DMSE solid-state switches. Mounting options cover Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 125 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 SAIJ100AX125-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×125 | 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 SAIJ100AX125-50S Is Used
Variable End-Stop Machining
Dial in the exact 75-125 mm clamping depth on machining fixtures without replacing the entire cylinder during tooling changes.
Machine Setup Commissioning
Fine-tune the retract end-position during initial machine commissioning to accommodate sensor placement and mechanical tolerances.
Product Size Changeover
Adapt conveyor diverters on the fly for different package lengths by adjusting the stroke back up to 50 mm from the nominal travel.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX125-50S the Right Cylinder?
Choose this adjustable-stroke model when your machine setup requires fine end-position tuning at commissioning without physically swapping cylinders or adding external stops. If you need less thrust, stepping down to an 80 mm bore provides 2513 N at 0.5 MPa; if your application demands higher force, the 125 mm bore yields 6136 N. Keep in mind the rear adjuster acts purely as a travel stop and does not hold the load without live air—always use a SAIL or BSAI cylinder for pneumatic load-holding.
To replace an ISO 15552 cylinder, match the 100 mm bore, 125 mm stroke, 50 mm adjustment range, PT ports, and the -S magnet. The 25 mm rod and M20x1.5 rod thread handle high side loads effectively, though any stroke of 300 mm or more would still require an external guide to prevent barrel wear.
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 SAIJ100AX125-50S FAQ
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.
The rear adjuster screw lets you shorten the 125 mm nominal stroke by up to 50 mm, creating a 75-125 mm travel window. It functions as a mechanical stop and 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 usually ship in 3-4 days.
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