This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X120S, 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 SI160X120S
The AirTAC SI160 Standard Cylinder SI160X120S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 120mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X120S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X120S
- 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 SI160X120S
The AirTAC SI160X120S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 120 mm stroke. Delivering 10053 N push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI160X120S. This direct upgrade shares the same ISO 15552 mounting interface, bore, stroke, force, port and accessories. The SAI features an upgraded piston seal with two Y-shaped one-way elements for long life and low start-up pressure, and the family adds SAIL, SAIF and BSAI lock variants the SI lacked.
This -S model includes a piston magnet for CS1-B/DS1-B switches, while the SAI replacement uses current AirTAC switches. Rod material options include carbon steel, SUS420J2 or SUS304, and a Viton H seal raises the temperature range to 0-150 C.
Airtac SI160 Standard Cylinder SI160X120S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X120S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X120S |
| Bore size | Ø160 mm |
| Stroke | 120 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 SAI160X120S 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 SAI160X120S 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 SI160X120S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×120 | 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 SI160X120S Is Used
Heavy Stamping
Drives large presses and stamping fixtures requiring high thrust, using the 10053 N push force at 0.5 MPa to form thick materials.
Clamp Actuation
Secures large workpieces in machining cells, relying on the 160 mm bore and adjustable 50 mm cushions to absorb impact.
Replacing the Airtac SI160 Standard Cylinder SI160X120S with the SAI160X120S
To replace the SI160X120S, order the SAI160X120S. Confirm the ISO 15552 mounting interface, the 160 mm bore, the 120 mm stroke, the G3/4 port (PT/G/NPT), the M36x2 rod thread, and the -S magnet. If you need to size both ways, neighbouring bores offer different force classes, and at 0.5 MPa this unit provides 10053 N push and 9425 N pull. A plain cylinder does not hold the load on air loss; the 50 mm adjustable air cushion only decelerates near stroke end. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The 120 mm stroke is under the 300 mm side-load threshold, but always guide the rod to prevent bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X120S
- ✓ 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 SI160X120S FAQ
Yes, the SI160X120S is discontinued. The direct replacement is the SAI160X120S. It shares the same ISO 15552 mounting interface, 160 mm bore, 120 mm stroke, output force, G3/4 port and mounting accessories, fitting existing fixtures perfectly.
This double-acting cylinder delivers 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 max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X120S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X120S replacement — usually within 7-8 hours.