This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X480, 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 SI50X480
The AirTAC SI50 Standard Cylinder SI50X480 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 480mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X480, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke480 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X480
- 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 SI50X480
The AirTAC SI50X480 is a discontinued double-acting ISO 15552 profile cylinder delivering 982 N push force at 0.5 MPa. It features a 50 mm bore, 480 mm stroke, G1/4 port, and M16x1.5 rod thread. The direct replacement is the SAI50X480, matching the interface, bore, stroke, force, and port.
This SKU lacks a magnet, so it cannot accept a CS1-B/DS1-B sensor. The SAI upgrade uses two Y-shaped piston seals for low start-up pressure. For high heat, Viton H seals raise the limit to 150 C.
Airtac SI50 Standard Cylinder SI50X480 Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X480 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X480 |
| Bore size | Ø50 mm |
| Stroke | 480 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 SAI50X480 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 SAI50X480 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 SI50X480
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×480 | 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 SI50X480 Is Used
Long-Stroke Diversion
Executes 480 mm routing of heavy totes on packaging lines, utilizing the 982 N thrust to push loads firmly into分流 lanes.
Press Ejection
Clears stamped parts from 50-ton presses where the 825 N pull force retracts the tooling reliably over the extended 480 mm travel.
Replacing the Airtac SI50 Standard Cylinder SI50X480 with the SAI50X480
To replace the SI50X480, order the SAI50X480. Verify the ISO 15552 mounting interface, G1/4 port, and 480 mm stroke. Since this SKU lacks a magnet (-S), it cannot support position sensing; order a magnet-equipped SAI if switches are needed. At 0.5 MPa, the 50 mm bore yields 982 N push (825 N pull); the 63 mm bore offers 1559 N if more force is required. The 480 mm stroke demands an external guide to prevent rod bending and side-load wear. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X480
- ✓ 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 SI50X480 FAQ
Yes, the AirTAC SI50X480 is discontinued. The direct replacement is the SAI50X480. It is dimensionally interchangeable per ISO 15552, keeping the same 50 mm bore, 480 mm stroke, G1/4 port, and mounting fixtures.
The 50 mm bore uses a G1/4 air port. It generates 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, 1767 N push at 0.9 MPa, and a theoretical maximum of 200 kgf at 1.0 MPa.
Request a Quote for the SAI50X480
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X480 replacement — usually within 7-8 hours.