This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80X175S, 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 SI80X175S
The AirTAC SI80 Standard Air Cylinder SI80X175S 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 SAI80X175S, 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 → SAI80X175S
- 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 SI80X175S
The AirTAC SI80X175S is a discontinued double-acting ISO 15552 profile cylinder with an 80 mm bore and 175 mm stroke. It delivers 2513 N of push force at 0.5 MPa through a G3/8 port. AirTAC replaced this legacy unit with the SAI80X175S, a direct replacement retaining the exact ISO 15552 mounting interface, M20x1.5 rod thread, and 36 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also introduces SAIL and BSAI lock variants absent in the SI line, and the original -S magnet supports legacy CS1-B/DS1-B sensors.
Airtac SI80 Standard Air Cylinder SI80X175S Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80X175S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80X175S |
| 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 SAI80X175S 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 SAI80X175S 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 SI80X175S
| 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 SI80X175S Is Used
Mid-Tonnage Pressing
Ideal for applying steady clamping or pressing force up to 1508 N safely, utilizing the 80 mm bore's robust thrust profile.
Heavy Diverters
Drives robust routing gates and diverter arms on high-throughput packaging lines requiring a 175 mm stroke.
Pallet Lift Stops
Acts as a reliable mechanical stop for pallets up to 128 kg, providing firm resistance without needing external locks.
Replacing the Airtac SI80 Standard Air Cylinder SI80X175S with the SAI80X175S
To replace the SI80X175S, order the SAI80X175S and verify your ISO 15552 mounting accessories (LB, FA, TC, etc.), G3/8 port threads, and the -S magnet for CS1-B/DS1-B switches. If you need more force, the 100 mm bore yields 3927 N push at 0.5 MPa; if less is required, the 63 mm bore provides 1559 N. Remember that a standard cylinder drifts without live air, so for load holding consider the SAIL lock variant or an external pilot check valve. At 175 mm stroke, side-load is minimal, but always ensure proper guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80X175S
- ✓ 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 SI80X175S FAQ
Yes, the AirTAC SI80X175S is discontinued. The direct replacement is the SAI80X175S. It shares the identical ISO 15552 mounting interface, 80 mm bore, 175 mm stroke, output force, G3/8 port, and accessories, fitting directly into existing fixtures.
The 80 mm bore 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 maximum of 513 kgf at 1.0 MPa. The operating speed range is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80X175S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80X175S replacement — usually within 7-8 hours.