This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X50, 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 SI160X50
The AirTAC SI160 Standard Cylinder SI160X50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 50mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X50
- 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 SI160X50
The AirTAC SI160X50 is a discontinued double-acting ISO 15552 profile cylinder. It delivers 10053 N push force at 0.5 MPa, uses a G3/4 port, and has a 50 mm stroke. The direct replacement is the SAI160X50, matching the original bore, force, port, and ISO 15552 mounting interface.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This non-magnet SKU cannot take a sensor, unlike CS1-B/DS1-B equipped units.
Airtac SI160 Standard Cylinder SI160X50 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X50 |
| Bore size | Ø160 mm |
| Stroke | 50 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 SAI160X50 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 SAI160X50 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 SI160X50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×50 | 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 SI160X50 Is Used
Heavy Pressing
Drives large stamping or forming dies requiring 10053 N of thrust at 0.5 MPa within a short 50 mm travel.
Industrial Clamping
Secures massive workpieces or mold halves in automated machining centers using its 14074 N output at 0.7 MPa.
Replacing the Airtac SI160 Standard Cylinder SI160X50 with the SAI160X50
To replace the SI160X50, order the SAI160X50. Confirm the ISO 15552 mounting interface, 160 mm bore, 50 mm stroke, G3/4 port (PT/G/NPT), and mounting accessory. This non-magnet SKU cannot accept a CS1-B/DS1-B sensor. For sizing, neighboring bores offer different forces: the 125 mm bore pushes 6136 N, while the 200 mm bore pushes 15708 N at 0.5 MPa. Because this plain cylinder drifts on air loss and its cushion only decelerates, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X50
- ✓ 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 SI160X50 FAQ
Yes, the SI160X50 is discontinued. The direct replacement is the SAI160X50. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 50 mm stroke, G3/4 port, and mounting interface.
It features a G3/4 port. Force ratings are 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. The speed range is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X50 replacement — usually within 7-8 hours.