This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X80SFB, 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 SI160 Standard Cylinder SI160X80SFB
The AirTAC Airtac SI160 Standard Cylinder SI160X80SFB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 80mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X80SFB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke80 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X80SFB
- 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 SI160 Standard Cylinder SI160X80SFB
The AirTAC SI160X80SFB is a discontinued double-acting ISO 15552 profile cylinder featuring an extruded aluminum barrel and an FB flange mount. Built for heavy-duty tasks, it delivers 10053 N of push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160X80SFB, a direct upgrade retaining the exact bore, stroke, M36x2 rod thread, and mounting interface.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI includes a piston magnet for CS1-B/DS1-B sensors, while the SAI family introduces lock and clamp variants (SAIL, BSAI) absent in the SI line.
Airtac SI160 Standard Cylinder SI160X80SFB Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X80SFB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X80SFB |
| Bore size | Ø160 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI160X80SFB carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X80SFB produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X80SFB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×80 | 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 SI160 Standard Cylinder SI160X80SFB Is Used
Heavy Press Clamping
Secures large steel plates in hydraulic press setups, utilizing the 10053 N push force at 0.5 MPa to hold components firmly during machining operations.
Automated Welding Fixtures
Actuates large robotic welding jigs, relying on the FB flange mount and ISO 15552 profile to maintain rigid positioning under high thermal stress.
Replacing the Airtac SI160 Standard Cylinder SI160X80SFB with the SAI160X80SFB
To replace the discontinued SI160X80SFB, order the SAI160X80SFB. Verify your ISO 15552 interface, 160 mm bore, 80 mm stroke, FB flange mounting, G3/4 port, and the -S magnet for legacy CS1-B/DS1-B switches (the SAI uses current AirTAC switches). If you need to scale, neighboring bores are 125 mm and 200 mm. At 0.5 MPa, this bore pushes 10053 N and pulls 9425 N. Because the 80 mm stroke is under 300 mm, side-load rod-bending risks are minimal, but always ensure linear guide alignment. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify an external pilot check valve, rod lock, or the SAIL/BSAI lock variant. The SAI also adds the SAIF self-valve option (bores 32-100) and Viton H seals for 0-150 C environments.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X80SFB
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X80SFB FAQ
Yes, the AirTAC SI160X80SFB is discontinued. The direct replacement is the SAI160X80SFB. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 80 mm stroke, FB flange, G3/4 port, and output force so it fits existing fixtures directly.
This double-acting cylinder features a G3/4 air port and a 40 mm piston rod. It delivers a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X80SFB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X80SFB replacement — usually within 7-8 hours.