This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X890S, 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 SI80 Standard Air Cylinder SI80X890S
The AirTAC SI80 Standard Air Cylinder SI80X890S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 890mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X890S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke890 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X890S
- 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 SI80 Standard Air Cylinder SI80X890S
The AirTAC SI80X890S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 2513 N push force at 0.5 MPa through an 80 mm bore and 890 mm stroke. AirTAC replaced this legacy unit with the SAI80X890S, a direct sharing the same ISO 15552 mounting interface, G3/8 port, and M20x1.5 rod thread.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and long service life. The SAI family also introduces SAIL, SAIF, and BSAI lock variants absent in the original SI line.
Airtac SI80 Standard Air Cylinder SI80X890S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X890S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X890S |
| Bore size | Ø80 mm |
| Stroke | 890 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI80X890S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAI80X890S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI80 Standard Air Cylinder SI80X890S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×890 | 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 SI80 Standard Air Cylinder SI80X890S Is Used
Long-Stroke Diversion
Pushes heavy pallets across transfer lines using the 890 mm stroke, with external guides preventing rod bending during lateral shifts.
Vertical Material Lift
Raises 128 kg loads in storage retrieval systems, requiring a pilot check valve to prevent drifting when air pressure drops.
Large Fixture Actuation
Positions heavy welding fixtures using 2513 N thrust at 0.5 MPa, relying on the G3/8 port for rapid fill and exhaust.
Replacing the Airtac SI80 Standard Air Cylinder SI80X890S with the SAI80X890S
To replace the SI80X890S, order the SAI80X890S direct, confirming the ISO 15552 mounting interface, 80 mm bore, 890 mm stroke, G3/8 port, and the -S magnet for legacy CS1-B/DS1-B sensors. When sizing, neighboring bores offer different forces: a 63 mm bore provides 1559 N push at 0.5 MPa, while a 100 mm bore yields 3927 N. Because the 890 mm stroke is long, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts without live air; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X890S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI80 Standard Air Cylinder SI80X890S FAQ
Yes, the SI80X890S is discontinued. The direct replacement is the SAI80X890S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 890 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80 mm bore features a G3/8 port and provides 2513 N push / 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 36 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X890S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X890S replacement — usually within 7-8 hours.