This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X192S, 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 SI50X192S
The AirTAC Airtac SI50 Standard Cylinder SI50X192S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 192mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X192S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke192 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X192S
- 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 SI50X192S
The AirTAC SI50X192S is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 192mm stroke. It delivers 982N push force at 0.5MPa via a G1/4 port. The direct replacement is the SAI50X192S, retaining identical ISO 15552 mounting dimensions, output force, and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants the SI lacked. Your SI50X192S uses CS1-B/DS1-B sensors; the SAI uses current AirTAC switches.
Airtac SI50 Standard Cylinder SI50X192S Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X192S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X192S |
| Bore size | Ø50 mm |
| Stroke | 192 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 SAI50X192S 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 SAI50X192S 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 SI50X192S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×192 | 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 SI50X192S Is Used
Package Diverting
Ideal for pushing medium-weight cartons off a belt line using the 982N push force at 0.5MPa without overwhelming the packaging.
Clamp Actuation
Provides reliable clamping pressure for machining fixtures, utilizing the 192mm stroke to clear the workpiece before loading.
Replacing the Airtac SI50 Standard Cylinder SI50X192S with the SAI50X192S
To replace the SI50X192S, order the SAI50X192S. Confirm the ISO 15552 mounting interface (LB, FA, TC, etc.), the G1/4 port, the M16x1.5 rod thread, and the -S magnet. Sizing both ways: a 40mm bore yields 628N push at 0.5MPa, while a 63mm bore yields 1559N. Note that a plain cylinder drifts on air loss; the 30mm cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. Stroke is under 300mm, so rod bending is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X192S
- ✓ 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 SI50X192S FAQ
Yes, the SI50X192S is discontinued. The direct replacement is the SAI50X192S. It is dimensionally interchangeable per ISO 15552, maintaining the same 50mm bore, 192mm stroke, force, G1/4 port, and mounting fixtures.
The bore is 50mm with a G1/4 air port. It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, 1767N push at 0.9MPa, and a maximum theoretical force of 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X192S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X192S replacement — usually within 7-8 hours.