This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X125TC, 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 SI80X125TC
The AirTAC SI80 Standard Air Cylinder SI80X125TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X125TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X125TC
- 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 SI80X125TC
The AirTAC SI80X125TC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 125 mm stroke. Delivering 2513 N push force at 0.5 MPa via a G3/8 port, it is replaced by the direct replacement SAI80X125TC. This upgrade retains the exact ISO 15552 mounting interface, TC trunnion, and output force.
The SAI80X125TC features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SKU lacks a magnet (-S), so it cannot accept CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X125TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X125TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X125TC |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAI80X125TC 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 SAI80X125TC 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 SI80X125TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SI80X125TC Is Used
Pallet Diversion
Actuates heavy lane diverters on packaging lines, using the 125 mm stroke to push pallets firmly onto parallel conveyors.
Clamp Actuation
Provides robust 2513 N clamping force at 0.5 MPa to secure large steel castings inside CNC machining centers.
Heavy Carton Indexing
Indexes heavy warehouse totes via the ISO 15552 TC trunnion mount, absorbing side loads during automated retrieval.
Replacing the Airtac SI80 Standard Air Cylinder SI80X125TC with the SAI80X125TC
To replace the discontinued SI80X125TC, order the SAI80X125TC. Confirm the ISO 15552 TC trunnion mounting, 125 mm stroke, G3/8 port, and M20x1.5 rod thread. Because this specific SKU has no magnet, it cannot support position sensing; if detection is needed, specify an SAI80X125 equivalent with the S suffix. Sizing both ways: the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external pilot check valve or the SAIL/BSAI lock variants for secure holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X125TC
- ✓ 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 SI80X125TC FAQ
Yes, the SI80X125TC is discontinued. The direct replacement is the SAI80X125TC. It shares the identical ISO 15552 mounting interface, 80 mm bore, 125 mm stroke, G3/8 port, and output force, fitting existing fixtures perfectly.
The bore is 80 mm with a G3/8 air port. Force ratings are: push 2513 N and pull 2268 N at 0.5 MPa; push 3518 N at 0.7 MPa; push 4523 N at 0.9 MPa; and a theoretical max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X125TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X125TC replacement — usually within 7-8 hours.