This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI50X600SN, 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 SI50X600SN
The AirTAC Airtac SI50 Standard Cylinder SI50X600SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 600mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI50X600SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAI50X600SN
- 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 SI50X600SN
The AirTAC SI50X600SN is a discontinued double-acting ISO 15552 profile cylinder with a 50mm bore and 600mm stroke. It delivers 982N push and 825N pull at 0.5MPa through a G1/4 port. The direct replacement is the SAI50X600SN, matching the interface, force, and stroke.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. The NBR seal handles -20 to +70C, while Viton H extends this. The -S magnet works with CS1-B/DS1-B sensors, and rod options include SUS304.
Airtac SI50 Standard Cylinder SI50X600SN Technical Specifications
| Model | Airtac SI50 Standard Cylinder SI50X600SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI50X600SN |
| Bore size | Ø50 mm |
| Stroke | 600 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 SAI50X600SN 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 SAI50X600SN 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 SI50X600SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×600 | 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 SI50X600SN Is Used
Long-Stroke Diversion
Pushes packages across transfer lines using the 600mm stroke, relying on the 982N thrust to overcome friction during routing.
Vertical Material Lift
Raises lightweight totes up to 50kg in storage racks, requiring external guides to prevent rod bending over the 600mm extension.
Replacing the Airtac SI50 Standard Cylinder SI50X600SN with the SAI50X600SN
To replace the SI50X600SN, order the SAI50X600SN. Verify the ISO 15552 mounting interface, G1/4 port, M16x1.5 rod thread, and NBR seal. The -S magnet supports CS1-B/DS1-B sensors, while the SAI uses current switches. For sizing, the 50mm bore yields 982N at 0.5MPa; drop to 40mm for 628N or step up to 63mm for 1559N. At 600mm, prevent rod bending by using external guides to manage side loads. Note that standard cylinders drift without air; for load holding, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI50X600SN
- ✓ 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 SI50X600SN FAQ
Yes, the SI50X600SN is discontinued. The direct replacement is the SAI50X600SN. It is dimensionally interchangeable per ISO 15552, retaining the same 50mm bore, 600mm stroke, 982N force, G1/4 port, and mounting interface.
This double-acting cylinder features a G1/4 port and M16x1.5 rod thread. It delivers 982N push and 825N pull at 0.5MPa, 1374N push at 0.7MPa, 1767N push at 0.9MPa, and a theoretical max of 200kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI50X600SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI50X600SN replacement — usually within 7-8 hours.