This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X460, 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 SI50X460
The AirTAC Airtac SI50 Standard Cylinder SI50X460 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 460mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X460, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke460 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X460
- 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 SI50X460
The AirTAC SI50X460 is a discontinued double-acting ISO 15552 profile cylinder with a 50 mm bore and 460 mm stroke. It delivers 982 N push and 825 N pull at 0.5 MPa through a G1/4 port. AirTAC replaced this legacy unit with the SAI50X460, a direct upgrade sharing the exact ISO 15552 mounting interface, M16x1.5 rod thread, and 30 mm adjustable cushions.
The SAI replacement introduces an upgraded piston seal featuring two Y-shaped one-way elements for low start-up pressure and extended life. For load holding, note that a standard cylinder drifts on air loss—the cushion only decelerates—so consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI50 Standard Cylinder SI50X460 Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X460 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X460 |
| Bore size | Ø50 mm |
| Stroke | 460 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 SAI50X460 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 SAI50X460 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 SI50X460
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×460 | 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 SI50X460 Is Used
Package Diverting
Actuates routing gates on packaging lines where the 982 N force easily redirects standard cartons over a 460 mm travel distance.
Material Lowering
Lowers light fixtures or platens vertically; the 460 mm stroke provides deep descent, requiring external guides to prevent rod bending.
Pallet Stops
Deploys stop arms in conveyor zones to halt pallets, using the 825 N pull force to retract the barrier safely.
Replacing the Airtac SI50 Standard Cylinder SI50X460 with the SAI50X460
To replace the SI50X460, order the SAI50X460 and verify your ISO 15552 mounting accessory (LB, FA, CA, TC), G1/4 port thread (PT/G/NPT), and 460 mm stroke. Because this SKU lacks the -S magnet, it cannot accept CS1-B/DS1-B sensors; order a magnet-equipped SAI if position detection is needed. Sizing both ways: the 50 mm bore gives 982 N push at 0.5 MPa, while the neighbouring 63 mm bore offers 1559 N. For the 460 mm stroke, use external guides to prevent rod bending and side-load damage. If the load must be held without live air, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X460
- ✓ 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 SI50X460 FAQ
Yes, the SI50X460 is discontinued. The direct replacement is the AirTAC SAI50X460. It shares the identical ISO 15552 mounting interface, 50 mm bore, 460 mm stroke, output force, G1/4 port, and 30 mm cushions, fitting directly into existing fixtures.
This double-acting cylinder has a G1/4 air port. It delivers 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, and 1767 N push at 0.9 MPa. The theoretical maximum force is 200 kgf at 1.0 MPa.
Request a Quote for the SAI50X460
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X460 replacement — usually within 7-8 hours.