This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI80BX175, 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 SI80BX175
The AirTAC SI80 Standard Air Cylinder SI80BX175 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 SAI80BX175, 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 → SAI80BX175
- 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 SI80BX175
The AirTAC SI80BX175 is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 2513 N push and 2268 N pull force at 0.5 MPa, utilizing a G3/8 air port and a SUS304 stainless steel piston rod (B option). AirTAC replaced this legacy unit with the SAI80BX175, a direct replacement sharing the exact ISO 15552 mounting interface, 175 mm stroke, and 513 kgf maximum force.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. Note this SKU lacks a magnet (-S) and cannot accept position sensors.
Airtac SI80 Standard Air Cylinder SI80BX175 Technical Specifications
| Model | Airtac SI80 Standard Air Cylinder SI80BX175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI80BX175 |
| 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 SAI80BX175 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 SAI80BX175 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 SI80BX175
| 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 SI80BX175 Is Used
Machine Tool Clamping
Secures heavy steel castings during CNC machining. The SUS304 rod resists coolant corrosion, while the 2513 N push force at 0.5 MPa provides rigid, high-force workholding.
Pallet Diverting
Actuates heavy-duty diverters on high-throughput packaging lines. The 175 mm stroke moves large pallets cleanly, and adjustable cushions absorb kinetic energy at stroke ends.
Vertical Lift Gates
Raises and lowers material handling safety gates.
Replacing the Airtac SI80 Standard Air Cylinder SI80BX175 with the SAI80BX175
To replace the SI80BX175, order the SAI80BX175 and confirm the ISO 15552 mounting interface, 80 mm bore, 175 mm stroke, and G3/8 port. Retain your original mounting accessory (LB, FA, TC, etc.) and verify thread choice (PT, G, NPT). Because this SKU lacks a magnet, it cannot support switches; if sensing is needed, select an SAI80X175S. For lateral stability on this 175 mm stroke, guide external loads to prevent rod bending. If checking neighboring bores, a 63 mm bore offers 1559 N push at 0.5 MPa, while a 100 mm bore provides 3927 N. Remember a plain cylinder drifts without live air; for load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI80BX175
- ✓ 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 SI80BX175 FAQ
Yes, the AirTAC SI80BX175 is discontinued. The direct replacement is the SAI80BX175. It shares the identical ISO 15552 mounting interface, 80 mm bore, 175 mm stroke, G3/8 port, and 513 kgf maximum force, fitting existing fixtures perfectly.
This double-acting cylinder uses a G3/8 air port. The force output is 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI80BX175
Send us the quantity and destination. We confirm price, stock and lead time on the SAI80BX175 replacement — usually within 7-8 hours.