This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX155S, 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 SI160BX155S
The AirTAC SI160 Standard Cylinder SI160BX155S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX155S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX155S
- 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 SI160BX155S
The AirTAC SI160BX155S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 155 mm stroke, and a SUS304 stainless steel rod. It delivers a push force of 10053 N at 0.5 MPa and uses a G3/4 air port. AirTAC replaced this EOL unit with the SAI160BX155S, a direct replacement retaining the exact ISO 15552 mounting interface, bore, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. This -S unit supports legacy CS1-B/DS1-B sensors; the SAI uses current switches.
Airtac SI160 Standard Cylinder SI160BX155S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX155S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX155S |
| Bore size | Ø160 mm |
| Stroke | 155 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 SAI160BX155S 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 SAI160BX155S 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 SI160BX155S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×155 | 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 SI160BX155S Is Used
Heavy Press Clamping
Generates 14074 N of push force at 0.7 MPa to secure large steel fabrications during heavy-duty machining and welding operations.
Stainless Forming
The SUS304 rod resists corrosion in washdown environments, making it ideal for actuating heavy forming dies in food processing plants.
Replacing the Airtac SI160 Standard Cylinder SI160BX155S with the SAI160BX155S
To replace the SI160BX155S, order the SAI160BX155S. Confirm the ISO 15552 mounting interface, the 155 mm stroke, the G3/4 port, and your mounting accessory. The -B rod is SUS304 stainless steel, and the -S magnet works with CS1-B/DS1-B switches. Sizing both ways: a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push at 0.5 MPa. Note that a plain cylinder drifts without live air; the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The Viton H seal option raises the temperature limit to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX155S
- ✓ 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 SI160BX155S FAQ
Yes, the SI160BX155S is discontinued. The direct replacement is the SAI160BX155S. It features the same ISO 15552 mounting interface, 160 mm bore, 155 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
At 0.5 MPa it provides 10053 N push and 9425 N pull. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical max force is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX155S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX155S replacement — usually within 7-8 hours.