This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X560S, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI50 Standard Cylinder SI50X560S
The AirTAC Airtac SI50 Standard Cylinder SI50X560S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 560mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X560S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke560 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X560S
- 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 SI50 Standard Cylinder SI50X560S
The AirTAC SI50X560S is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 560mm stroke. Providing 982N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI50X560S. This direct upgrade shares identical mounting, force, and dimensions but adds an upgraded piston seal using two Y-shaped one-way elements for lower start-up pressure.
The SAI family introduces SAIL, SAIF, and BSAI variants absent from the legacy SI line. With the -S magnet, this cylinder pairs with CS1-B/DS1-B switches. Note that plain cylinders drift without air; use a pilot check valve or SAIL lock for holding.
Airtac SI50 Standard Cylinder SI50X560S Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X560S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X560S |
| Bore size | Ø50 mm |
| Stroke | 560 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI50X560S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAI50X560S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI50 Standard Cylinder SI50X560S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×560 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI50 Standard Cylinder SI50X560S Is Used
Multi-Station Indexing
Shifts a tooling carriage between machining cells, relying on the G1/4 port for rapid 30-800mm/s actuation.
Replacing the Airtac SI50 Standard Cylinder SI50X560S with the SAI50X560S
To replace the SI50X560S, order the SAI50X560S, confirming the ISO 15552 mounting, 50mm bore, 560mm stroke, G1/4 port, and -S magnet. The SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B. For sizing down, a 40mm bore yields 628N push at 0.5MPa; sizing up, a 63mm bore yields 1559N. Because 560mm exceeds 300mm, add external guides to prevent rod bending under side loads. The air cushion only decelerates near stroke end; for load holding on air loss, specify an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X560S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI50 Standard Cylinder SI50X560S FAQ
Yes, the AirTAC SI50X560S is discontinued. The direct replacement is the SAI50X560S. It is dimensionally interchangeable per ISO 15552, retaining the same 50mm bore, 560mm stroke, 982N force, G1/4 port, and mounting interface.
The 50mm bore features a G1/4 air port and M16x1.5 rod thread. Force output is 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, and a theoretical maximum of 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X560S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X560S replacement — usually within 7-8 hours.