This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X200CA, 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 SI50X200CA
The AirTAC Airtac SI50 Standard Cylinder SI50X200CA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X200CA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X200CA
- 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 SI50X200CA
The AirTAC SI50X200CA is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore, 200mm stroke, and CA clevis mounting. Delivering 982N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI50X200CA. This direct upgrade retains identical dimensions, porting, and output, fitting existing fixtures seamlessly.
The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life. Note this non-S SKU lacks a magnet and cannot accept CS1-B/DS1-B sensors. For elevated heat, Viton H seals extend operation to 150C.
Airtac SI50 Standard Cylinder SI50X200CA Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X200CA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X200CA |
| Bore size | Ø50 mm |
| Stroke | 200 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 SAI50X200CA 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 SAI50X200CA 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 SI50X200CA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SI50X200CA Is Used
Package Diverting
Actuates routing gates on packaging lines, utilizing the 200mm stroke and 982N thrust to redirect cartons efficiently.
Replacing the Airtac SI50 Standard Cylinder SI50X200CA with the SAI50X200CA
To replace the SI50X200CA, order the SAI50X200CA. Verify the ISO 15552 CA clevis interface, 50mm bore, 200mm stroke, G1/4 port (PT/G/NPT thread options), and M16x1.5 rod thread. Because this specific SKU lacks the -S magnet, it cannot support position sensing; order an -S variant if switches are required. Sizing both ways: stepping up to a 63mm bore increases 0.5MPa push force to 1559N, while dropping to a 40mm bore reduces it to 628N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve, rod lock, or the SAIL/BSAI lock variants. The SAI family also adds the SAIF self-valve option (bores 32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X200CA
- ✓ 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 SI50X200CA FAQ
Yes, the SI50X200CA is discontinued. The direct replacement is the SAI50X200CA. It is dimensionally interchangeable per ISO 15552, retaining the same CA clevis mount, 50mm bore, 200mm stroke, G1/4 port, and output force.
It features a G1/4 air port. Force ratings are: 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, 1767N push at 0.9MPa, and a theoretical maximum of 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X200CA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X200CA replacement — usually within 7-8 hours.