This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X120TC, 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 SI80X120TC
The AirTAC SI80 Standard Air Cylinder SI80X120TC 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 SAI80X120TC, 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 → SAI80X120TC
- 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 SI80X120TC
The AirTAC SI80X120TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 120 mm stroke. It delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port. AirTAC replaced this EOL unit with the SAI80X120TC, a direct sharing the exact TC trunnion mount, bore, stroke, output force and ISO 15552 interface dimensions.
The SAI upgrade features a modernized piston seal using two Y-shaped one-way elements for low start-up pressure and extended life. Note this specific SKU lacks a magnet (-S) and cannot accept position sensors. The SAI family also introduces SAIL, SAIF and BSAI lock variants absent from the legacy SI line.
Airtac SI80 Standard Air Cylinder SI80X120TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X120TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X120TC |
| 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 SAI80X120TC 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 SAI80X120TC 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 SI80X120TC
| 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 SI80X120TC Is Used
Clamp Actuation
Provides 2513 N of secure clamping force at 0.5 MPa for holding heavy workpieces during machining or welding operations.
Package Diversion
Drives robust routing arms or pusher gates on high-throughput material handling lines with a 120 mm travel distance.
Pallet Stops
Acts as a heavy-duty pneumatic stop mechanism for roller conveyors carrying substantial pallet loads.
Replacing the Airtac SI80 Standard Air Cylinder SI80X120TC with the SAI80X120TC
To replace the SI80X120TC, order the SAI80X120TC keeping the identical 80 mm bore, 120 mm stroke, G3/8 port, M20x1.5 rod thread and TC trunnion mounting. Verify your thread standard (PT, G or NPT) during checkout. If sizing up or down, neighbouring bores (63 mm or 100 mm) alter the 0.5 MPa push force (1559 N or 3927 N respectively). This non-magnetic version cannot host legacy CS1-B/DS1-B switches; order a SAI with the S suffix if sensing is required. A plain cylinder drifts on air loss because the 36 mm cushions only decelerate near stroke ends; for load holding use an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. Stroke is under 300 mm so rod bending is minimal, but always guide external loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X120TC
- ✓ 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 SI80X120TC FAQ
Yes, the AirTAC SI80X120TC is discontinued. The direct replacement is the SAI80X120TC. It shares the identical ISO 15552 mounting interface, 80 mm bore, 120 mm stroke, output force, G3/8 port and TC trunnion mount, fitting directly into existing fixtures.
The 80 mm bore features a G3/8 air port and M20x1.5 rod thread. It delivers 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 force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X120TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X120TC replacement — usually within 7-8 hours.