This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X80, 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 SI80X80
The AirTAC SI80 Standard Air Cylinder SI80X80 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X80, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X80
- 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 SI80X80
The AirTAC SI80X80 is a discontinued double-acting ISO 15552 profile cylinder delivering 2513 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI80X80, a direct replacement retaining the exact 80 mm bore, 80 mm stroke, G3/8 port, and ISO 15552 mounting interface. The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life.
This non-magnet SKU cannot accept a position switch, unlike the -S variant which used CS1-B/DS1-B sensors. The SAI family also introduces lock and valve variants (SAIL, BSAI, SAIF) absent in the original SI line.
Airtac SI80 Standard Air Cylinder SI80X80 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X80 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X80 |
| Bore size | Ø80 mm |
| Stroke | 80 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 SAI80X80 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 SAI80X80 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 SI80X80
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×80 | 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 SI80X80 Is Used
Press Fit Assembly
Drives bearings and bushings into housings on an automated line, utilizing the 2513 N push force at 0.5 MPa for reliable seating.
Clamp Actuation
Operates large pneumatic clamps securing components during machining, relying on the 36 mm adjustable air cushions to decelerate the 25 mm rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80X80 with the SAI80X80
To replace the SI80X80, order the SAI80X80 and verify your ISO 15552 mounting hardware (LB, FA, TC, etc.), 80 mm stroke, and G3/8 port threads (PT, G, or NPT). Because this specific SKU lacks the -S magnet, it cannot support sensing; if switches are needed, select the SAI80X80S and use current AirTAC sensors. For sizing alternatives, neighboring bores (63mm or 100mm) offer 2182 N or 5497 N at 0.7 MPa, respectively. Note that a standard cylinder drifts without live air; for load-holding on pressure loss, use an external pilot check valve or choose the SAIL/BSAI lock variants. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X80
- ✓ 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 SI80X80 FAQ
Yes, the SI80X80 is discontinued. The direct replacement is the AirTAC SAI80X80. It shares the identical ISO 15552 mounting interface, 80 mm bore, 80 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 25 mm rod and M20x1.5 thread.
Request a Quote for the SAI80X80
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X80 replacement — usually within 7-8 hours.