This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X180S, 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 SI80X180S
The AirTAC SI80 Standard Air Cylinder SI80X180S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 180mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X180S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X180S
- 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 SI80X180S
The AirTAC SI80X180S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 180 mm stroke. Generating 2513 N push force at 0.5 MPa through its G3/8 port, it is replaced by the direct replacement SAI80X180S.
The SAI upgrade retains identical dimensions but uses two Y-shaped one-way piston seals for lower start-up pressure. The SAI family adds SAIL lock and BSAI clamp variants the SI lacked. This -S SKU uses CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X180S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X180S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X180S |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAI80X180S 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 SAI80X180S 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 SI80X180S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SI80X180S Is Used
Press Fit Assembly
Drives medium-tonnage press operations for fitting bearings into housings, utilizing the 2513 N push force at 0.5 MPa.
Pallet Diversion
Actuates heavy-duty lane diverters on packaging lines, where the 180 mm stroke and 80 mm bore provide reliable lateral shifting.
Vacuum Lifter Actuation
Raises and lowers large vacuum gripper frames for palletizing, safely handling loads near the 128 kg vertical lift limit.
Replacing the Airtac SI80 Standard Air Cylinder SI80X180S with the SAI80X180S
To replace the SI80X180S, order the SAI80X180S. Verify the ISO 15552 mounting interface, 180 mm stroke, G3/8 port, and M20x1.5 rod thread. The -S suffix means a magnet for CS1-B/DS1-B switches; the SAI uses current AirTAC switches. If sizing up or down, compare 63 mm (1559 N) or 100 mm (3927 N) bores at 0.5 MPa. For loads needing holding on air loss, use an external pilot check valve or SAIL/BSAI lock variant, as cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X180S
- ✓ 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 SI80X180S FAQ
Yes, the AirTAC SI80X180S is discontinued. The direct replacement is the SAI80X180S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 180 mm stroke, output force, G3/8 port, and accessories, fitting existing fixtures perfectly.
This double-acting cylinder operates at 30-800 mm/s with a G3/8 port. Force ratings are 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and a maximum theoretical force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X180S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X180S replacement — usually within 7-8 hours.