This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X480SH, 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 SI50X480SH
The AirTAC Airtac SI50 Standard Cylinder SI50X480SH 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 SAI50X480SH, 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 → SAI50X480SH
- 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 SI50X480SH
The AirTAC SI50X480SH is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 480mm stroke. Delivering 982 N push force at 0.5 MPa, it features a G1/4 air port, M16x1.5 rod thread, and a piston magnet for CS1-B/DS1-B switches. The -H suffix denotes a Viton/FKM high-temperature seal rated for 0-150 C.
The direct replacement is the SAI50X480SH. It shares the same ISO 15552 mounting interface, bore, stroke, force, and port, but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Airtac SI50 Standard Cylinder SI50X480SH Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X480SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X480SH |
| 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 SAI50X480SH 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 SAI50X480SH 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 SI50X480SH
| 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 SI50X480SH Is Used
High-Temp Pressing
Applies 982 N clamping force at 0.5 MPa for assembly fixtures operating up to 150 C using the Viton H seal.
Long-Stroke Diverting
480mm stroke actuates sorting gates across wide conveyor belts, requiring external guides to manage rod bending.
Replacing the Airtac SI50 Standard Cylinder SI50X480SH with the SAI50X480SH
To replace the SI50X480SH, order the SAI50X480SH. Confirm the ISO 15552 mounting interface, G1/4 port (PT/G/NPT), and your mounting accessory (LB, FA, TC, etc.). The -S magnet works with legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. For sizing, a 50mm bore yields 982 N push at 0.5 MPa; dropping to 40mm gives 628 N, while 63mm provides 1559 N. Because the 480mm stroke exceeds 300mm, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X480SH
- ✓ 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 SI50X480SH FAQ
Yes, the SI50X480SH is discontinued. The direct replacement is the SAI50X480SH. It is dimensionally interchangeable per ISO 15552, retaining the same 50mm bore, 480mm stroke, G1/4 port, and mounting interface.
At 0.5 MPa it pushes 982 N and pulls 825 N. At 0.7 MPa push is 1374 N, and max force is 200 kgf at 1.0 MPa. Speed is 30-800 mm/s. The G1/4 port and 30mm cushions are fixed by the 50mm bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X480SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X480SH replacement — usually within 7-8 hours.