Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-50S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX550-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 550mm 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
- Stroke550 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 SAIJ100AX550-50S
The AirTAC SAIJ100X550-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the effective travel to anywhere within a 500-550 mm window. It delivers robust thrust, pushing 7068 N and pulling 3681 N at 0.9 MPa. The integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE solid-state sensors in the dual-side barrel grooves for precise end-of-stroke signaling.
This variant features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and utilizes PT tapered port threads (G1/2). Because the 550 mm stroke is substantial for the 25 mm rod diameter, an external guide is recommended to prevent excessive side-loading. The rear adjuster acts purely as a travel stop to fine-tune deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 550 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 SAIJ100AX550-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×550 | 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 SAIJ100AX550-50S Is Used
Machine Changeover
Quickly reposition the retract end-stop within the 500-550 mm window when switching product sizes on a packaging line, avoiding mechanical teardown.
Variable End-Stop Diverter
Adjust the stroke dynamically on automated conveyors to alter the resting position of diverter arms without reprogramming the entire PLC.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX550-50S the Right Cylinder?
The 50 mm adjustment range is ideal for product changeovers, allowing you to reposition the retract end-stop on the fly without swapping out the entire cylinder or fabricating external mechanical stops.
For a direct ISO 15552 replacement, match the 100 mm bore, 550 mm stroke, 50 mm adjuster, PT G1/2 port, and -S magnet. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits FB, CA, CB, and CR. If your application requires true load-holding without continuous air pressure, this cylinder will not suffice; consider the SAIL (air-released lock) or BSAI (clamp-lock) series 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 SAIJ100AX550-50S FAQ
The rear adjuster screw lets you shorten the 550 mm nominal stroke by up to 50 mm, providing a usable travel window of 500-550 mm. It acts as a mechanical stop to set the end position and relies on the air cushion for deceleration; it does not lock the load without air pressure.
The standard operating speed range for this bore size is 30-800 mm/s, assuming clean, filtered air.
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