This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X125SFB, 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 SI160X125SFB
The AirTAC SI160 Standard Cylinder SI160X125SFB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 125mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X125SFB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X125SFB
- 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 SI160X125SFB
The AirTAC SI160X125SFB is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 125 mm stroke. It delivers 10053 N push force at 0.5 MPa and uses a G3/4 port with an FB flange mount. The direct replacement is the SAI160X125SFB, which matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size for immediate fixture integration.
The SAI upgrade features a revised piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. It also introduces SAIL, SAIF, and BSAI lock variants absent from the legacy line. The included -S magnet works with CS1-B/DS1-B switches, and Viton H seals expand the temperature range to 150 C.
Airtac SI160 Standard Cylinder SI160X125SFB Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X125SFB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X125SFB |
| Bore size | Ø160 mm |
| Stroke | 125 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 SAI160X125SFB 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 SAI160X125SFB 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 SI160X125SFB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×125 | 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 SI160X125SFB Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring 10053 N of thrust at 0.5 MPa, utilizing the FB flange to handle severe lateral stresses.
Automotive Assembly Jigs
Actuates heavy-duty positioning jigs on automotive lines, where the 125 mm stroke moves substantial structural components precisely.
Replacing the Airtac SI160 Standard Cylinder SI160X125SFB with the SAI160X125SFB
To replace the discontinued SI160X125SFB, order the SAI160X125SFB. Verify your existing fixture matches the ISO 15552 interface, 160 mm bore, 125 mm stroke, G3/4 port, and FB flange mounting. If you need more force, the neighboring 200 mm bore yields 15708 N push at 0.5 MPa; if less is required, the 125 mm bore provides 6136 N. The included -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family uses current AirTAC switches. Note that a standard cylinder drifts without live air; for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Rod material options include carbon steel, SUS420J2 (A), or SUS304 (B).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X125SFB
- ✓ 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 SI160X125SFB FAQ
Yes, the SI160X125SFB is discontinued. The direct replacement is the SAI160X125SFB. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 125 mm stroke, FB flange mount, and G3/4 port.
This double-acting cylinder features a G3/4 port and an M36x2 rod thread. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X125SFB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X125SFB replacement — usually within 7-8 hours.