This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX185S, 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 SI160BX185S
The AirTAC SI160 Standard Cylinder SI160BX185S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 185mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX185S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX185S
- 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 SI160BX185S
The AirTAC SI160BX185S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 185 mm stroke. It features a SUS304 stainless piston rod, a built-in magnet for legacy CS1-B/DS1-B sensors, and delivers 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this EOL unit with the SAI160BX185S, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, and porting.
The SAI replacement introduces an upgraded piston seal utilizing two Y-shaped one-way elements for low start-up pressure and extended life. The SAI family also expands functionality with SAIL air-released lock and BSAI clamp-lock variants absent from the original SI line.
Airtac SI160 Standard Cylinder SI160BX185S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX185S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX185S |
| Bore size | Ø160 mm |
| Stroke | 185 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 SAI160BX185S 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 SAI160BX185S 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 SI160BX185S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×185 | 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 SI160BX185S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures where the 10053 N push force at 0.5 MPa securely manipulates heavy steel components.
Stainless Rod Washdown
Operates in corrosive or washdown environments utilizing the SUS304 piston rod option to maintain structural integrity and prevent rust.
Replacing the Airtac SI160 Standard Cylinder SI160BX185S with the SAI160BX185S
To replace the discontinued SI160BX185S, order the SAI160BX185S and verify the ISO 15552 mounting interface, 185 mm stroke, G3/4 port, and mounting accessories. The -S magnet and -B SUS304 rod are retained. Sizing checks: the neighboring 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore offers 15708 N. At 0.7 MPa, this 160 mm bore generates 14074 N. Note that a standard cylinder drifts on air loss; the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. For any stroke over 300 mm, guide the load to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX185S
- ✓ 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 SI160BX185S FAQ
Yes, the SI160BX185S is discontinued. The direct replacement is the SAI160BX185S. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G3/4 port, and mounting fixtures.
It features a G3/4 port and an M36x2 rod thread. Force output is 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX185S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX185S replacement — usually within 7-8 hours.