This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX850, 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 SI160AX850
The AirTAC SI160 Standard Cylinder SI160AX850 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 850mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX850, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX850
- 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 SI160AX850
The AirTAC SI160AX850 is a discontinued double-acting ISO 15552 profile cylinder with an 850 mm stroke and a 160 mm bore. It delivers a thrust of 10053 N at 0.5 MPa, utilizing a G3/4 air port and an M36x2 piston rod thread. Because this legacy model is end-of-life, you should order the direct replacement: the SAI160AX850. It shares the identical ISO 15552 mounting interface, bore, stroke, force, and port size, fitting directly into your existing fixtures.
The SAI upgrade features an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU uses the SUS420J2 stainless steel rod option (-A) for corrosion resistance. It lacks a magnet, so it cannot accept position sensors.
Airtac SI160 Standard Cylinder SI160AX850 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX850 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX850 |
| Bore size | Ø160 mm |
| Stroke | 850 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 SAI160AX850 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 SAI160AX850 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 SI160AX850
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×850 | 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 SI160AX850 Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring up to 10053 N of push force at 0.5 MPa, utilizing the robust 160 mm bore for heavy industrial metalworking.
Corrosive Environment Actuation
Operates reliably in washdown or mildly corrosive settings thanks to the -A designation SUS420J2 stainless steel piston rod, preventing surface degradation during repeated cycles.
Replacing the Airtac SI160 Standard Cylinder SI160AX850 with the SAI160AX850
To replace the discontinued SI160AX850, order the SAI160AX850. Confirm your ISO 15552 mounting interface, the 850 mm stroke, and the G3/4 port. This unit includes the -A SUS420J2 stainless steel rod; if you do not need corrosion resistance, the standard carbon-steel rod is the default. Because this SKU has no -S magnet, it cannot support legacy CS1-B/DS1-B sensors; you must use external limit switches for position detection. If sizing alternatives, the neighboring 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore yields 15708 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates; for load holding, use an external pilot check valve or explore the SAIL or BSAI lock variants. Finally, at 850 mm, the 40 mm rod is susceptible to bending under side loads; always use external guide rails to prevent rod damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX850
- ✓ 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 SI160AX850 FAQ
Yes, the AirTAC SI160AX850 is discontinued and end-of-life. The direct replacement is the SAI160AX850. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 850 mm stroke, 10053 N force, and G3/4 port, so it drops directly into existing mounts.
The 160 mm bore cylinder provides a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa it pushes 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, and it features a 50 mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
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