This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X760SN, 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 SI50X760SN
The AirTAC Airtac SI50 Standard Cylinder SI50X760SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 760mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X760SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke760 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X760SN
- 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 SI50X760SN
The AirTAC SI50X760SN is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 760mm stroke. It delivers 982 N push force at 0.5 MPa via a G1/4 port. The direct replacement is the SAI50X760SN, matching the interface, bore, stroke, force, port and mounting.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. It also adds SAIL, SAIF and BSAI variants the SI lacked. The -S magnet works with CS1-B/DS1-B sensors.
Airtac SI50 Standard Cylinder SI50X760SN Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X760SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X760SN |
| Bore size | Ø50 mm |
| Stroke | 760 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 SAI50X760SN 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 SAI50X760SN 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 SI50X760SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×760 | 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 SI50X760SN Is Used
Long-Stroke Diversion
Pushes packages across transfer lines using the 760mm stroke, guided externally to prevent rod bending during lateral diversion.
Component Ejection
Ejects machined parts from fixtures using 982 N of push force, relying on the adjustable 30mm air cushions for smooth end-of-stroke deceleration.
Replacing the Airtac SI50 Standard Cylinder SI50X760SN with the SAI50X760SN
To replace the SI50X760SN, order the SAI50X760SN. Verify the ISO 15552 mounting interface, 50mm bore, 760mm stroke, G1/4 port (PT/G/NPT), and mounting accessory. The -S magnet enables CS1-B/DS1-B sensors (the SAI uses current AirTAC switches). For sizing, the 50mm bore yields 982 N push at 0.5 MPa; neighboring bores are 40mm (628 N) and 63mm (1559 N). At 760mm, add external guides to prevent rod bending and side-load wear. A plain cylinder drifts without air; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X760SN
- ✓ 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 SI50X760SN FAQ
Yes, the SI50X760SN is discontinued. The direct replacement is the SAI50X760SN. It is dimensionally interchangeable per ISO 15552, keeping the same 50mm bore, 760mm stroke, 982 N force, G1/4 port and mounting fixtures.
The G1/4 port bore delivers a push force of 982 N and pull of 825 N at 0.5 MPa, 1374 N at 0.7 MPa, and a theoretical max of 200 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 30mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X760SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X760SN replacement — usually within 7-8 hours.