This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X900N, 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 SI80X900N
The AirTAC SI80 Standard Air Cylinder SI80X900N is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X900N, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X900N
- 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 SI80X900N
The AirTAC SI80X900N is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 900 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa, utilizing a G3/8 port and a 25 mm piston rod. The direct replacement is the SAI80X900N, which maintains the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for seamless fixture integration.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements, ensuring low start-up pressure and extended service life. This specific SKU lacks a magnet (-S) and therefore cannot accept position sensors; the NBR (-N) seal supports standard operating temperatures from -20 to +70 C.
Airtac SI80 Standard Air Cylinder SI80X900N Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X900N |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X900N |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAI80X900N 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 SAI80X900N 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 SI80X900N
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SI80X900N Is Used
Long-Stroke Material Transfer
Drives large packages across wide conveyor gaps using the 900 mm stroke, relying on the 2513 N push force at 0.5 MPa to move loads smoothly between processing stations.
Large Component Ejection
Pushes molded parts or heavy machined components out of large fixtures, utilizing the 36 mm adjustable air cushions to decelerate the 900 mm travel safely.
Replacing the Airtac SI80 Standard Air Cylinder SI80X900N with the SAI80X900N
To replace the discontinued SI80X900N, order the SAI80X900N, confirming the ISO 15552 mounting interface, 80 mm bore, 900 mm stroke, G3/8 port, and NBR seal. Because this is a non-magnetized SKU, it cannot support legacy CS1-B/DS1-B sensors; if switching is required, select an SAI model with the -S magnet option. When sizing, consider the neighboring 63 mm bore (1559 N push at 0.5 MPa) for lighter loads, or the 100 mm bore (3927 N push at 0.5 MPa) for heavier demands. At 900 mm, the stroke length requires external guide rails to prevent rod bending and excessive side loads. A plain cylinder does not hold load on air loss; for secure holding, use an external rod lock, a pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X900N
- ✓ 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 SI80X900N FAQ
Yes, the SI80X900N is discontinued. The direct replacement is the SAI80X900N. It is dimensionally interchangeable per ISO 15552, matching the 80 mm bore, 900 mm stroke, 2513 N force, G3/8 port, and mounting interface, so it fits existing fixtures perfectly.
The 80 mm bore features a G3/8 port and a 25 mm piston rod. Force output is 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a theoretical maximum of 513 kgf at 1.0 MPa. The cylinder operates at speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X900N
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X900N replacement — usually within 7-8 hours.