This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X1800TC, 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 SI80X1800TC
The AirTAC SI80 Standard Air Cylinder SI80X1800TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 1800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X1800TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke1800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X1800TC
- 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 SI80X1800TC
The AirTAC SI80X1800TC is a discontinued double-acting ISO 15552 profile cylinder with a TC trunnion mount. Built for heavy duty, it delivers 2513 N push and 2268 N pull at 0.5 MPa through a G3/8 port. Because this 1800 mm stroke exceeds the 1500 mm standard maximum for the 80 mm bore, it is a non-standard, made-to-order unit. The direct replacement is the SAI80X1800TC, matching the bore, stroke, force, port and mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet (-S) and cannot take a sensor. The SAI family also adds SAIL, SAIF and BSAI lock variants the SI lacked.
Airtac SI80 Standard Air Cylinder SI80X1800TC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X1800TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X1800TC |
| Bore size | Ø80 mm |
| Stroke | 1800 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 SAI80X1800TC 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 SAI80X1800TC 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 SI80X1800TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×1800 | 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 SI80X1800TC Is Used
Long-Stroke Material Transfer
Pushes heavy pallets 1.8 meters between conveyor lines using the full 2513 N thrust at 0.5 MPa.
High-Bay Storage Extraction
Extracts deep totes from shelving racks where the 1800 mm reach and TC trunnion pivot are required.
Vertical Lowering Press
Lowers heavy fixtures with a 128 kg safe vertical lift capacity, requiring external guides for the long rod.
Replacing the Airtac SI80 Standard Air Cylinder SI80X1800TC with the SAI80X1800TC
To replace the SI80X1800TC, order the SAI80X1800TC. Verify the ISO 15552 TC trunnion interface, 80 mm bore, 1800 mm stroke, G3/8 port and thread type (PT/G/NPT). Since this lacks an S suffix, it cannot accept a magnetic sensor. Because 1800 mm exceeds the 1500 mm standard maximum, expect a made-to-order lead time. At 0.5 MPa you get 2513 N push; sizing down, a 63 mm bore yields 1559 N, while sizing up to 100 mm provides 3927 N. For this long stroke, use an external guide to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X1800TC
- ✓ 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 SI80X1800TC FAQ
Yes, the SI80X1800TC is discontinued. The direct replacement is the SAI80X1800TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 80 mm bore, 1800 mm stroke, force, G3/8 port and TC mount. You just order the SAI80X1800TC.
The 80 mm bore uses a G3/8 port. It provides 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 max of 513 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X1800TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X1800TC replacement — usually within 7-8 hours.