This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X175FTC, 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 SI80X175FTC
The AirTAC SI80 Standard Air Cylinder SI80X175FTC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI80X175FTC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI80X175FTC
- 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 SI80X175FTC
The AirTAC SI80X175FTC is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel and adjustable air cushions at both ends. Delivering 2513 N push force at 0.5 MPa through a G3/8 port, it is replaced by the SAI80X175FTC. This direct successor matches the bore, stroke, force, port, and FTC trunnion mounting interface exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. For load holding, note the cushion only decelerates; use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI80 Standard Air Cylinder SI80X175FTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X175FTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X175FTC |
| Bore size | Ø80 mm |
| Stroke | 175 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 SAI80X175FTC 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 SAI80X175FTC 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 SI80X175FTC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×175 | 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 SI80X175FTC Is Used
Package Diversion
Pushes heavy cartons on packaging lines using the 2513 N thrust at 0.5 MPa, with the FTC mount handling mid-stroke lateral loads.
Clamp Actuation
Secures large metal workpieces during machining, benefiting from the 36 mm adjustable air cushions to soften end-of-stroke impacts.
Pallet Handling
Indexes loaded pallets on rollers, where the 80 mm bore and ~128 kg vertical lift capacity provide robust shifting force.
Replacing the Airtac SI80 Standard Air Cylinder SI80X175FTC with the SAI80X175FTC
To replace the SI80X175FTC, order the SAI80X175FTC. Verify the ISO 15552 FTC trunnion interface, 80mm bore, 175mm stroke, G3/8 port (PT/G/NPT thread options), and M20x1.5 rod thread. Since this SKU lacks a magnet, it cannot support position sensing; add the -S suffix if switches are needed. The 80mm bore yields 2513 N push at 0.5 MPa; neighboring options are 63mm (1559 N) or 100mm (3927 N). A plain cylinder drifts on air loss—the cushion only decelerates—so for held loads use an external pilot check valve or the SAIL/BSAI lock variants. With a 175mm stroke, side-load and rod-bending risks are low, but ensure correct alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X175FTC
- ✓ 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 SI80X175FTC FAQ
Yes, the SI80X175FTC is discontinued. The direct replacement is the SAI80X175FTC. It is dimensionally interchangeable per ISO 15552, retaining the same 80mm bore, 175mm stroke, G3/8 port, and FTC trunnion mounting interface.
The 80mm bore uses a G3/8 air port. It generates 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 force of 513 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X175FTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X175FTC replacement — usually within 7-8 hours.