This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50AX195S, 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 SI50AX195S
The AirTAC SI50 Standard Cylinder SI50AX195S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 195mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50AX195S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke195 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50AX195S
- 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 SI50AX195S
The AirTAC SI50AX195S is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore, 195mm stroke, and an SUS420J2 stainless steel rod. Delivering 982 N push force at 0.5 MPa through a G1/4 port, it is replaced by the SAI50AX195S. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI-S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants previously unavailable.
Airtac SI50 Standard Cylinder SI50AX195S Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50AX195S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50AX195S |
| Bore size | Ø50 mm |
| Stroke | 195 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 SAI50AX195S 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 SAI50AX195S 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 SI50AX195S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×195 | 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 SI50AX195S Is Used
Package Diverting
Actuates diverting arms on packaging lines using the 982 N push force to redirect cartons efficiently at G1/4 operating pressure.
Clamp Actuation
Secures workpieces during machining, relying on the 195mm stroke to position clamps precisely without exceeding standard limits.
Replacing the Airtac SI50 Standard Cylinder SI50AX195S with the SAI50AX195S
To replace the SI50AX195S, order the SAI50AX195S, confirming the ISO 15552 interface, 50mm bore, 195mm stroke, G1/4 port, and mounting accessory. The -S magnet and -A SUS420J2 rod carry over directly. For sizing, a 50mm bore yields 982 N push at 0.5 MPa; dropping to a 40mm bore gives 628 N, while a 63mm bore provides 1559 N. Note that a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant. At 195mm stroke, rod bending is minimal, but always guide the load to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50AX195S
- ✓ 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 SI50AX195S FAQ
Yes, the SI50AX195S is discontinued. The direct replacement is the SAI50AX195S. It shares the same ISO 15552 mounting interface, 50mm bore, 195mm stroke, output force, and G1/4 port, fitting existing fixtures perfectly.
The G1/4 port feeds a 50mm bore yielding 982 N push and 825 N pull at 0.5 MPa. At 0.7 MPa push is 1374 N, and 1767 N at 0.9 MPa. The theoretical max force is 200 kgf at 1.0 MPa, with speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50AX195S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50AX195S replacement — usually within 7-8 hours.