This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX50, 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 SI160AX50
The AirTAC Airtac SI160 Standard Cylinder SI160AX50 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 SAI160AX50, 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 → SAI160AX50
- 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 SI160AX50
The AirTAC SI160AX50 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore and 50 mm stroke. It delivers a substantial 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160AX50, a direct upgrade retaining the exact ISO 15552 mounting interface, M36x2 rod thread, and 2050 kgf maximum force.
The SAI160AX50 features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU uses a SUS420J2 stainless steel rod (-A) for corrosion resistance but lacks a magnet, meaning it cannot accept CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX50 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX50 |
| 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 SAI160AX50 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 SAI160AX50 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 SI160AX50
| 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 SI160AX50 Is Used
Heavy Press Clamping
Generates 10053 N of push force at 0.5 MPa to secure large metal castings or heavy assemblies during machining and pressing operations.
Mold Ejection Systems
Uses the corrosion-resistant SUS420J2 stainless rod in humid production environments to push heavy industrial molds or eject finished composite parts.
Replacing the Airtac SI160 Standard Cylinder SI160AX50 with the SAI160AX50
To replace the SI160AX50, order the SAI160AX50. Verify your ISO 15552 mounting fixtures, the G3/4 air port, and the M36x2 rod thread. Because this SKU lacks a magnet (-S), it cannot support position sensing; if switches are needed, select a magnet-equipped SAI model. Sizing checks: stepping down to a 125 mm bore reduces push force to 6136 N at 0.5 MPa, while the 160 mm bore offers 14074 N at 0.7 MPa. 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/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX50
- ✓ 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 SI160AX50 FAQ
Yes, the SI160AX50 is discontinued. The direct replacement is the SAI160AX50. It shares the exact same ISO 15552 mounting interface, 160 mm bore, 50 mm stroke, G3/4 port, and output force, fitting directly into your existing fixtures.
This double-acting cylinder uses a G3/4 air port and features a 40 mm piston rod with an M36x2 thread. It 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 maximum force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX50
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX50 replacement — usually within 7-8 hours.