This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X300TC, 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 SI80X300TC
The AirTAC SI80 Standard Air Cylinder SI80X300TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X300TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X300TC
- 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 SI80X300TC
The AirTAC SI80X300TC is a discontinued double-acting ISO 15552 profile cylinder with an 80mm bore and 300mm stroke. Generating 2513N push force at 0.5MPa via a G3/8 port, it is replaced by the SAI80X300TC. This direct successor matches the TC trunnion mount, bore, and force, fitting existing fixtures seamlessly.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors. For high heat, Viton H seals raise the limit to 150C.
Airtac SI80 Standard Air Cylinder SI80X300TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X300TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X300TC |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAI80X300TC 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 SAI80X300TC 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 SI80X300TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SI80X300TC Is Used
Pallet Diversion
Shifts heavy pallets laterally on a high-throughput line using the 2513N push force, with the TC trunnion absorbing mid-stroke torque.
Vertical Lift Gate
Raises a 128kg material gate through 300mm of travel, relying on the adjustable 36mm air cushions to soften end-of-stroke impact.
Press Ejection
Clears dense stamped parts from a die bed, where the robust 80mm profile barrel withstands repetitive industrial shock.
Replacing the Airtac SI80 Standard Air Cylinder SI80X300TC with the SAI80X300TC
To replace the SI80X300TC, order the SAI80X300TC. Confirm the ISO 15552 TC trunnion interface, 80mm bore, 300mm stroke, and G3/8 port (PT/G/NPT threads). Because this SKU lacks an -S magnet, it cannot support position sensing; if required, order a magnet-equipped SAI. At 300mm stroke, use an external guide to prevent rod bending and side-load wear. A 63mm bore yields 1559N [email protected], while a 100mm bore yields 3927N. The cushion only decelerates; it does not hold load. For load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X300TC
- ✓ 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 SI80X300TC FAQ
Yes, the SI80X300TC is discontinued. The direct replacement is the SAI80X300TC. It shares the same ISO 15552 TC mounting interface, 80mm bore, 300mm stroke, output force, and G3/8 port, fitting existing fixtures perfectly.
The 80mm bore uses a G3/8 port. It delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X300TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X300TC replacement — usually within 7-8 hours.