This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X120, 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 SI160X120
The AirTAC SI160 Standard Cylinder SI160X120 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 SAI160X120, 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 → SAI160X120
- 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 SI160X120
The AirTAC SI160X120 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 120 mm stroke, delivering 10053 N of push force at 0.5 MPa. It features a G3/4 air port and a 50 mm adjustable air cushion at each end. The direct replacement is the SAI160X120, which matches the original ISO 15552 mounting interface, bore, stroke, output force, and port size exactly.
This SKU lacks a magnet and cannot accept a sensor. The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life, and adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI160 Standard Cylinder SI160X120 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X120 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X120 |
| 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 SAI160X120 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 SAI160X120 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 SI160X120
| 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 SI160X120 Is Used
Heavy Press Operations
Drives large forming and stamping presses requiring up to 10053 N of push force at 0.5 MPa, utilizing the 50 mm adjustable cushion to absorb heavy impact.
Industrial Clamp Systems
Secures large fabricated components during machining or welding, relying on the 160 mm bore's 9425 N pull force to maintain rigid workholding.
Replacing the Airtac SI160 Standard Cylinder SI160X120 with the SAI160X120
To replace the SI160X120, order the SAI160X120. Confirm the ISO 15552 mounting interface, the 120 mm stroke, the G3/4 port, and your mounting accessory. Because this specific SKU has no magnet, it cannot support sensing; if position detection is needed, order an SAI with the S suffix for current AirTAC switches. The 160 mm bore yields 10053 N push and 9425 N pull at 0.5 MPa; if less force is needed, the 125 mm bore offers 6136 N push, while the 200 mm bore provides 15708 N push. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. Since this is a 120 mm stroke, side-load risks are minimal, but always ensure proper guide alignment.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X120
- ✓ 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 SI160X120 FAQ
Yes, the SI160X120 is discontinued. The direct replacement is the SAI160X120. It shares the identical ISO 15552 mounting interface, 160 mm bore, 120 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
The G3/4 port supplies a 40 mm rod. At 0.5 MPa it delivers 10053 N push and 9425 N pull. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X120
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X120 replacement — usually within 7-8 hours.