This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X175SFTC, 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 SI80X175SFTC
The AirTAC SI80 Standard Air Cylinder SI80X175SFTC 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 SAI80X175SFTC, 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 → SAI80X175SFTC
- 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 SI80X175SFTC
The AirTAC SI80X175SFTC is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 175 mm stroke. It delivers 2513 N push force at 0.5 MPa via a G3/8 port. AirTAC replaced this legacy unit with the SAI80X175SFTC, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, force, and FTC trunnion mount.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF, and BSAI lock variants absent in the SI line. The built-in magnet supports CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X175SFTC Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X175SFTC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X175SFTC |
| 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 SAI80X175SFTC 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 SAI80X175SFTC 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 SI80X175SFTC
| 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 SI80X175SFTC Is Used
Heavy-Duty Clamping
Secures large metal castings during CNC machining using the 2513 N push force at 0.5 MPa, ensuring rigid workholding.
Pallet Diversion
Actuates heavy diverter arms on packaging lines, utilizing the 175 mm stroke to route loaded pallets efficiently.
Replacing the Airtac SI80 Standard Air Cylinder SI80X175SFTC with the SAI80X175SFTC
To replace the SI80X175SFTC, order the SAI80X175SFTC. Confirm the ISO 15552 interface, 80 mm bore, 175 mm stroke, G3/8 port, and FTC trunnion mounting. The -S magnet accommodates CS1-B/DS1-B switches. If sizing up or down, neighbouring bores (63 mm or 100 mm) alter the 0.5 MPa push force (1559 N or 3927 N). Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Rod material options include carbon steel, SUS420J2, or SUS304.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X175SFTC
- ✓ 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 SI80X175SFTC FAQ
Yes, the SI80X175SFTC is discontinued. The direct replacement is the SAI80X175SFTC. It shares the same ISO 15552 mounting interface, 80 mm bore, 175 mm stroke, G3/8 port, and FTC trunnion mount, fitting existing fixtures perfectly.
The G3/8 port feeds a 25 mm rod. It delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and a max force of 513 kgf at 1.0 MPa. Operating speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X175SFTC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X175SFTC replacement — usually within 7-8 hours.