This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X332SN, 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 SI50X332SN
The AirTAC Airtac SI50 Standard Cylinder SI50X332SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 332mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X332SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke332 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X332SN
- 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 SI50X332SN
The AirTAC SI50X332SN is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 332mm stroke. Delivering 982N push force at 0.5MPa, it is replaced by the SAI50X332SN. This direct upgrade keeps the same G1/4 port, M16x1.5 thread, and mounting interface. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure, and the NBR seal suits -20 to +70C.
The -S magnet works with CS1-B/DS1-B switches, while the SAI family adds SAIL lock, SAIF valve, and BSAI clamp variants. Note that 332mm exceeds the 1200mm standard maximum, making this a nonstandard stroke.
Airtac SI50 Standard Cylinder SI50X332SN Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X332SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X332SN |
| Bore size | Ø50 mm |
| Stroke | 332 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 SAI50X332SN 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 SAI50X332SN 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 SI50X332SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×332 | 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 SI50X332SN Is Used
Package Diversion
Actuates routing gates on packaging lines, utilizing the 982N push force at 0.5 MPa to deflect heavy cartons reliably.
Pallet Handling
Extends 332mm to push pallets or totes at sorting stations, requiring external guides to manage the long stroke side-load.
Replacing the Airtac SI50 Standard Cylinder SI50X332SN with the SAI50X332SN
To replace the discontinued SI50X332SN, order the SAI50X332SN direct equivalent, matching the ISO 15552 mounting interface, 50mm bore, 332mm stroke, G1/4 port, and NBR seals. Because 332mm is a nonstandard stroke, verify exact extended length. For sizing alternatives, neighboring bores (40mm or 63mm) offer different force classes; at 0.5MPa the 50mm yields 982N push and 825N pull. With a 332mm stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock variant for load holding. The -S magnet supports CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X332SN
- ✓ 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 SI50X332SN FAQ
Yes, the SI50X332SN is discontinued. The direct replacement is the AirTAC SAI50X332SN. It is dimensionally interchangeable per ISO 15552, retaining the same 50mm bore, 332mm stroke, G1/4 port, and mounting interface. The SAI simply upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
The 50mm bore features a G1/4 air port and an M16x1.5 rod thread. Force output is 982N push and 825N pull at 0.5 MPa, 1374N push at 0.7 MPa, 1767N push at 0.9 MPa, and a theoretical maximum of 200kgf at 1.0 MPa. Operating speed is 30-800 mm/s, and the 332mm stroke requires external guides to prevent rod bending.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X332SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X332SN replacement — usually within 7-8 hours.