This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X470S, 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 SI50X470S
The AirTAC Airtac SI50 Standard Cylinder SI50X470S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 470mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X470S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke470 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X470S
- 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 SI50X470S
The AirTAC SI50X470S is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 470mm stroke. Delivering 982N push force at 0.5MPa through a G1/4 port, it is replaced by the SAI50X470S. This direct upgrade shares identical mounting, force and stroke specs, fitting existing fixtures perfectly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI -S magnet works with legacy CS1-B/DS1-B sensors, while SAI uses current switches. SAIL lock and BSAI clamp-lock variants expand options.
Airtac SI50 Standard Cylinder SI50X470S Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X470S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X470S |
| Bore size | Ø50 mm |
| Stroke | 470 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 SAI50X470S 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 SAI50X470S 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 SI50X470S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×470 | 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 SI50X470S Is Used
Long-Stroke Diversion
Pushes packages across a 470mm transfer gap with 982N force at 0.5MPa, guided externally to prevent rod bending.
Pallet Handling
Actuates 470mm pallet stops and lifts in distribution hubs, fitting existing ISO 15552 mounting blocks seamlessly.
Replacing the Airtac SI50 Standard Cylinder SI50X470S with the SAI50X470S
To replace the SI50X470S, order the SAI50X470S and confirm the ISO 15552 interface, 50mm bore, 470mm stroke, G1/4 port and mounting accessory. The -S magnet enables current AirTAC switches (legacy used CS1-B/DS1-B). For sizing both ways: a 40mm bore gives 628N push at 0.5MPa, while a 63mm bore yields 1559N. A plain cylinder drifts on air loss since cushions only decelerate; for load holding use an external pilot check valve or the SAIL/BSAI lock variants. At 470mm, prevent rod bending by guiding the load externally to avoid side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X470S
- ✓ 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 SI50X470S FAQ
Yes, the SI50X470S is discontinued. The direct replacement is the SAI50X470S, offering the same ISO 15552 mounting interface, 50mm bore, 470mm stroke, 982N force and G1/4 port.
At 0.5MPa it pushes 982N and pulls 825N. Push is 1374N at 0.7MPa and 1767N at 0.9MPa, with a theoretical max of 200kgf at 1.0MPa. Speed is 30-800mm/s, using a G1/4 port.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X470S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X470S replacement — usually within 7-8 hours.