This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X263SN, 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 SI80X263SN
The AirTAC SI80 Standard Air Cylinder SI80X263SN is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 263mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X263SN, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke263 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X263SN
- 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 SI80X263SN
The AirTAC SI80X263SN is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel, delivering 2513 N push and 2268 N pull at 0.5 MPa via its G3/8 port. As a legacy unit, it must be replaced by the current-production SAI80X263SN. This direct successor matches the exact 80 mm bore, 263 mm stroke, M20x1.5 rod thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI utilized a CS1-B/DS1-B sensor set, whereas the SAI family uses current AirTAC switches. If your application requires load holding on air loss, note that a standard cylinder drifts; you should specify the SAIL or BSAI lock variant instead.
Airtac SI80 Standard Air Cylinder SI80X263SN Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X263SN |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X263SN |
| Bore size | Ø80 mm |
| Stroke | 263 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 SAI80X263SN 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 SAI80X263SN 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 SI80X263SN
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×263 | 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 SI80X263SN Is Used
Press Fit Assembly
Delivers 2513 N of push force at 0.5 MPa to seat bearings and bushings into housings without overstressing the part.
Pallet Diversion
Uses the 263 mm stroke to push heavy product pallets off a main conveyor line into a secondary packaging zone.
Replacing the Airtac SI80 Standard Air Cylinder SI80X263SN with the SAI80X263SN
To replace the discontinued SI80X263SN, order the SAI80X263SN direct, verifying the ISO 15552 mounting interface, G3/8 port, and NBR seals. The -S magnet and -N seal options carry over directly. If you need to size up or down, neighboring bores (63 mm or 100 mm) offer 1559 N or 3927 N push at 0.5 MPa respectively. Because the 263 mm stroke exceeds standard increments, it is a nonstandard stroke; ensure your supplier confirms the exact dimension. For any stroke at or above 300 mm, guide the load externally to prevent rod bending and side-load wear. Remember that a plain cylinder does not hold load without live air—the cushion only decelerates—so use an external rod lock or pilot check valve for safety, or select the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X263SN
- ✓ 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 SI80X263SN FAQ
Yes, the SI80X263SN is discontinued. The direct replacement is the SAI80X263SN. It shares the identical ISO 15552 mounting interface, 80 mm bore, 263 mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The bore is 80 mm with a G3/8 air port. 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 max of 513 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X263SN
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X263SN replacement — usually within 7-8 hours.