This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX280S, 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 SI160BX280S
The AirTAC SI160 Standard Cylinder SI160BX280S 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 SAI160BX280S, 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 → SAI160BX280S
- 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 SI160BX280S
The AirTAC SI160BX280S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 280mm stroke. Built with an extruded aluminum barrel and a SUS304 stainless piston rod, it delivers 10053 N push force at 0.5 MPa. AirTAC replaced this legacy unit with the SAI160BX280S, a direct upgrade retaining the exact G3/4 port, M36x2 thread, and ISO 15552 mounting interface.
The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note that a standard cylinder drifts without live air; the cushion only decelerates. For load holding, explore the SAIL or BSAI lock variants.
Airtac SI160 Standard Cylinder SI160BX280S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX280S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX280S |
| 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 SAI160BX280S 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 SAI160BX280S 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 SI160BX280S
| 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 SI160BX280S Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring high thrust, utilizing the 10053 N push force at 0.5 MPa to form thick metal plates.
Automated Clamp Rig
Secures large fabricated steel frames during welding operations, relying on the robust 40mm SUS304 stainless piston rod.
Replacing the Airtac SI160 Standard Cylinder SI160BX280S with the SAI160BX280S
To replace the discontinued SI160BX280S, order the SAI160BX280S. Verify your ISO 15552 mounting fixtures, the G3/4 air port, and the CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). The -S magnet and -B SUS304 rod are retained. For sizing, this 160mm bore yields 10053 N push at 0.5 MPa; if less force is needed, a 125mm bore provides 6136 N, while a 200mm bore offers 15708 N. Because the 280mm stroke exceeds 300mm, ensure guide rails to prevent rod bending and side-load damage. A plain cylinder will not hold a load without air; use an external pilot check valve or the SAIL lock variant for secure holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX280S
- ✓ 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 SI160BX280S FAQ
Yes, the AirTAC SI160BX280S is discontinued. The direct replacement is the SAI160BX280S. It shares the same ISO 15552 mounting interface, 160mm bore, 280mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/4 air port and an M36x2 rod thread. Force output is 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX280S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX280S replacement — usually within 7-8 hours.