This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X120S, 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 SI80X120S
The AirTAC SI80 Standard Air Cylinder SI80X120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 120mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke120 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X120S
- 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 SI80X120S
The AirTAC SI80X120S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 120 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. The direct replacement is the SAI80X120S, matching the exact ISO 15552 mounting interface, stroke and output force.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The SAI family also introduces SAIL, SAIF and BSAI lock variants the SI lacked. This -S SKU uses CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X120S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X120S |
| Bore size | Ø80 mm |
| Stroke | 120 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 SAI80X120S 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 SAI80X120S 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 SI80X120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SI80X120S Is Used
Pallet Diverting
Provides 2513 N of push force at 0.5 MPa to reliably shift loaded pallets between parallel conveyor lines.
Heavy Carton Stacking
Handles high-force lifting and positioning of bulky packaging goods within automated storage fixtures.
Replacing the Airtac SI80 Standard Air Cylinder SI80X120S with the SAI80X120S
To replace the SI80X120S, order the SAI80X120S. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC), the G3/8 port, and the -S magnet for CS1-B/DS1-B switches. The 80 mm bore yields 2513 N push at 0.5 MPa; step down to a 63 mm bore for 1559 N, or up to 100 mm for 3927 N. A plain cylinder drifts on air loss, so for load holding use the SAIL or BSAI lock variant. The 120 mm stroke is under 300 mm, so rod bending is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X120S
- ✓ 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 SI80X120S FAQ
Yes, the SI80X120S is discontinued. The direct replacement is the SAI80X120S. It is dimensionally interchangeable per ISO 15552, retaining the same 80 mm bore, 120 mm stroke, output force, G3/8 port and mounting interface.
This double-acting cylinder uses a G3/8 port. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical maximum force is 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X120S replacement — usually within 7-8 hours.