This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1850S, 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 SI160X1850S
The AirTAC SI160 Standard Cylinder SI160X1850S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1850mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1850S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1850S
- 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 SI160X1850S
The AirTAC SI160X1850S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 1850 mm stroke. Generating 10053 N push force at 0.5 MPa, it is replaced directly by the SAI160X1850S direct equivalent. The SAI maintains the exact G3/4 port, M36x2 rod thread, and ISO 15552 mounting interface for seamless fixture integration. Note that this 1850 mm stroke is non-standard (exceeding the 1500 mm max), requiring made-to-order production and external guides to prevent rod bending.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and extended life. The SI -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI family also introduces SAIL and BSAI lock variants absent in the legacy line.
Airtac SI160 Standard Cylinder SI160X1850S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1850S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1850S |
| Bore size | Ø160 mm |
| Stroke | 1850 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 SAI160X1850S 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 SAI160X1850S 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 SI160X1850S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1850 | 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 SI160X1850S Is Used
Heavy Material Lifts
Drives large fabricated parts vertically over 1850 mm, utilizing the 10053 N push force at 0.5 MPa to elevate heavy structural frames within automated welding lines.
Pallet Diversion
Actuates heavy-duty routing gates on high-capacity conveyors, where the robust 160 mm bore and 9425 N pull force reliably redirect loaded pallets.
Press Ejection
Ejects dense machined components from large hydraulic presses, relying on the 14074 N thrust at 0.7 MPa to clear the tooling area effectively.
Replacing the Airtac SI160 Standard Cylinder SI160X1850S with the SAI160X1850S
To replace the SI160X1850S, order the SAI160X1850S direct cylinder, confirming the ISO 15552 mounting interface, 160 mm bore, and 1850 mm non-standard stroke. Because this stroke exceeds the 1500 mm standard maximum, it is made-to-order; you must implement external guides to prevent rod-bending and side-load damage over this long distance. Verify your porting (G3/4) and thread options (PT/G/NPT). The -S magnet accommodates legacy CS1-B/DS1-B switches, but the SAI replacement uses current AirTAC sensors. If neighbouring bores are considered, the 125 mm bore offers 6136 N push @0.5 MPa, while the 200 mm bore provides 15708 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1850S
- ✓ 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 SI160X1850S FAQ
Yes, the SI160X1850S is discontinued. The direct replacement is the SAI160X1850S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 1850 mm stroke, G3/4 port, and mounting interface. You simply order the SAI equivalent for your existing fixtures.
This double-acting cylinder features a G3/4 air port and 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 SAI160X1850S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1850S replacement — usually within 7-8 hours.