This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X165S, 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 SI160X165S
The AirTAC SI160 Standard Cylinder SI160X165S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 165mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X165S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke165 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X165S
- 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 SI160X165S
The AirTAC SI160X165S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 165 mm stroke. It delivers a thrust of 10053 N at 0.5 MPa, utilizing a 40 mm carbon steel piston rod and a G3/4 air port. Because this legacy unit is end-of-life, you should order the direct replacement: the SAI160X165S. It shares the same ISO 15552 mounting interface, bore, stroke, output force, and port size, fitting directly into existing fixtures.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements, ensuring low start-up pressure and prolonged service life. This -S model includes a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family also adds SAIL, SAIF, and BSAI lock or valve variants that the SI line lacked.
Airtac SI160 Standard Cylinder SI160X165S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X165S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X165S |
| Bore size | Ø160 mm |
| Stroke | 165 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 SAI160X165S 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 SAI160X165S 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 SI160X165S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×165 | 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 SI160X165S Is Used
Heavy Machinery Forming
Drives large presses and forming tools where the 14074 N push force at 0.7 MPa is required to shape thick metal components.
Pallet Transfer Lines
Indexes heavy loaded pallets along conveyor sections, utilizing the 512 kg vertical lift capacity to lift and shift goods securely.
Automated Clamp Fixtures
Holds large castings in machining cells, relying on the rigid 40 mm rod and adjustable 50 mm air cushions to absorb impact at stroke end.
Replacing the Airtac SI160 Standard Cylinder SI160X165S with the SAI160X165S
To replace the discontinued SI160X165S, order the SAI160X165S. Confirm the ISO 15552 mounting interface, the 165 mm stroke, the G3/4 port (available in PT, G, or NPT threads), and your specific mounting accessory like an LB foot or TC trunnion. This unit includes a magnet (-S) for position sensing; the legacy SI used CS1-B/DS1-B switches, whereas the current SAI replacement utilizes modern AirTAC sensors. If sizing alternatives, neighboring bores offer different force classes, but at 0.5 MPa this 160 mm bore provides a 10053 N push and 9425 N pull. Note that a plain cylinder does not hold load without live air—the cushion only decelerates—so for gravity loads consider an external pilot check valve or the SAIL/BSAI lock variants. Since the 165 mm stroke is under 300 mm, severe rod-bending side loads are less critical than on longer strokes, but proper guide alignment is still required.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X165S
- ✓ 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 SI160X165S FAQ
Yes, the AirTAC SI160X165S is discontinued and end-of-life. The direct replacement is the SAI160X165S. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the exact same 160 mm bore, 165 mm stroke, output force, G3/4 port, and mounting accessories.
This double-acting cylinder uses a G3/4 air port and generates a push force of 10053 N and a pull force of 9425 N at 0.5 MPa. At 0.7 MPa the push force is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa, operating at a speed of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X165S
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