This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X1800S, 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 SI160X1800S
The AirTAC SI160 Standard Cylinder SI160X1800S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 1800mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X1800S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke1800 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X1800S
- 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 SI160X1800S
The AirTAC SI160X1800S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 1800 mm stroke. Generating 10053 N push force at 0.5 MPa, it is replaced directly by the SAI160X1800S. This direct upgrade shares the same G3/4 port, M36x2 thread, and ISO 15552 mounting interface. The 1800 mm stroke is non-standard (exceeding the 1500 mm max), requiring a guide to prevent rod bending.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. The -S magnet works with legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL lock and BSAI clamp variants the SI lacked.
Airtac SI160 Standard Cylinder SI160X1800S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X1800S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X1800S |
| Bore size | Ø160 mm |
| Stroke | 1800 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 SAI160X1800S 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 SAI160X1800S 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 SI160X1800S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×1800 | 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 SI160X1800S Is Used
Heavy Material Transfer
Drives large pallets or heavy assemblies over 1800 mm on production lines, utilizing the 10053 N push force at 0.5 MPa to move substantial loads.
Automated Warehousing
Acts as a long-reach actuator for pushing heavy storage containers, requiring external guides to manage the side-load risks of the extended 1800 mm stroke.
Large Assembly Fixtures
Provides the long linear motion needed to position heavy automotive or industrial components, with the G3/4 port handling high airflow demands.
Replacing the Airtac SI160 Standard Cylinder SI160X1800S with the SAI160X1800S
To replace the SI160X1800S, order the SAI160X1800S with the exact 160 mm bore, 1800 mm stroke, and -S magnet. Confirm the ISO 15552 mounting accessory (LB, FA, TC) and G3/4 port (PT/G/NPT). Because 1800 mm exceeds the 1500 mm standard, it is made-to-order; always use an external guide to prevent rod bending over this long stroke. Sizing both ways: a 200 mm bore yields 15708 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X1800S
- ✓ 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 SI160X1800S FAQ
Yes, the SI160X1800S is discontinued. The direct replacement is the SAI160X1800S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 1800 mm stroke, force, G3/4 port, and mounting interface.
The 160 mm bore provides 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s. Note that 1800 mm is a non-standard made-to-order stroke.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X1800S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X1800S replacement — usually within 7-8 hours.