This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX280, 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 SI160AX280
The AirTAC Airtac SI160 Standard Cylinder SI160AX280 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 280mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX280, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX280
- 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 SI160AX280
The AirTAC SI160AX280 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 280 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160AX280, matching the bore, stroke, force, port and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features an upgraded piston seal using two Y-shaped one-way elements for low start-up pressure and long life. This SKU has no magnet (-S), so it cannot take a CS1-B/DS1-B sensor. It uses a SUS420J2 stainless rod (-A).
Airtac SI160 Standard Cylinder SI160AX280 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX280 |
| Bore size | Ø160 mm |
| Stroke | 280 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 SAI160AX280 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 SAI160AX280 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 SI160AX280
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×280 | 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 SI160AX280 Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring up to 14074 N thrust at 0.7 MPa, utilizing the 280 mm stroke to cycle heavy tooling.
Automated Clamp Systems
Secures large fabricated components in welding cells, relying on the robust 40 mm rod and M36x2 thread for rigid clamping.
Replacing the Airtac SI160 Standard Cylinder SI160AX280 with the SAI160AX280
To replace the SI160AX280, order the SAI160AX280 and confirm the ISO 15552 mounting interface, 160 mm bore, 280 mm stroke, G3/4 port, and SUS420J2 rod. Because this stroke is 280 mm (over 300 mm threshold approaches), ensure adequate guide support to prevent rod bending and side-load wear. Sizing both ways: a 200 mm bore offers more force, while a 125 mm bore provides 6136 N push at 0.5 MPa. This plain cylinder lacks a magnet, so no switch can be fitted. For load holding on air loss, the cushion only decelerates; use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX280
- ✓ 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 SI160AX280 FAQ
Yes, the AirTAC SI160AX280 is discontinued. The direct replacement is the SAI160AX280. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 280 mm stroke, force, G3/4 port and mounting fixtures.
The G3/4 port feeds a 160 mm bore generating 10053 N push and 9425 N pull at 0.5 MPa. At 0.7 MPa push is 14074 N, and at 0.9 MPa it is 18095 N. The theoretical max force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX280 replacement — usually within 7-8 hours.