This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX290, 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 SI160AX290
The AirTAC Airtac SI160 Standard Cylinder SI160AX290 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 290mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX290, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke290 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX290
- 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 SI160AX290
The AirTAC SI160AX290 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 290 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI160AX290, a direct upgrade retaining the exact ISO 15552 mounting interface, M36x2 thread, and 50 mm cushions.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SI160AX290 variant uses a SUS420J2 stainless rod (A suffix) and lacks a magnet (-S), meaning it cannot accept CS1-B or DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX290 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX290 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX290 |
| Bore size | Ø160 mm |
| Stroke | 290 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 SAI160AX290 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 SAI160AX290 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 SI160AX290
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×290 | 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 SI160AX290 Is Used
Heavy Press Clamping
Secures large metal castings in machining centers, utilizing the 14074 N push force at 0.7 MPa to prevent workpiece shifting during heavy milling operations.
Stamping Press Feed
Drives thick-gauge material into forming dies, where the SUS420J2 stainless rod provides corrosion resistance against cutting fluids and industrial coolants.
Replacing the Airtac SI160 Standard Cylinder SI160AX290 with the SAI160AX290
To replace the discontinued SI160AX290, order the SAI160AX290. Verify your ISO 15552 mounting accessories (LB, FA, CA, TC), the G3/4 air port, and the M36x2 rod thread. Because this SKU lacks a magnet, it cannot support position sensing; if switches are needed, select an SAI160 model with the S suffix for current AirTAC sensors. The 290 mm stroke is under the 1500 mm standard maximum, but you should still use guide rails to prevent rod bending under side loads. If stepping down to a 125 mm bore saves space, expect 6136 N push at 0.5 MPa; stepping up to 200 mm yields 15708 N. For load holding on air loss, note that the 50 mm cushions only decelerate the piston—they do not lock it. Use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX290
- ✓ 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 SI160AX290 FAQ
Yes, the AirTAC SI160AX290 is discontinued. The direct replacement is the SAI160AX290. It shares the identical ISO 15552 mounting interface, 160 mm bore, 290 mm stroke, G3/4 port, and output force, dropping directly into existing fixtures.
This double-acting cylinder features a G3/4 air port and a 40 mm piston rod. It outputs 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 maximum theoretical force of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX290
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX290 replacement — usually within 7-8 hours.