This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X280, 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 SI160X280
The AirTAC SI160 Standard Cylinder SI160X280 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 SAI160X280, 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 → SAI160X280
- 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 SI160X280
The AirTAC SI160X280 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 280 mm stroke. Delivering 10053 N push force at 0.5 MPa via a G3/4 port, it is directly replaced by the SAI160X280. This direct successor matches the exact interface, bore, force and mounting hardware.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and longevity, plus added SAIL, SAIF and BSAI lock variants. Note this non-magnet SKU cannot accept sensors.
Airtac SI160 Standard Cylinder SI160X280 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X280 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X280 |
| 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 SAI160X280 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 SAI160X280 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 SI160X280
| 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 SI160X280 Is Used
Heavy Stamping Press
Drives large tonnage forming dies where the 10053 N push force at 0.5 MPa handles intense metal deformation tasks reliably.
Pallet Transfer Unit
Shifts loaded pallets along conveyors, using the 280 mm stroke to index heavy goods smoothly between processing stations.
Industrial Clamp Fixture
Secures oversized structural components during machining, utilizing the 160 mm bore capacity for rigid, zero-movement holding.
Replacing the Airtac SI160 Standard Cylinder SI160X280 with the SAI160X280
To replace the SI160X280, order the SAI160X280 ensuring the ISO 15552 mounting interface, 280 mm stroke, G3/4 port and M36x2 rod thread match your fixture. This non-magnet version cannot hold a position switch; CS1-B/DS1-B sensors require a legacy -S model. Sizing both ways: the 125 mm bore yields 6136 N push at 0.5 MPa, while the 200 mm bore provides 15708 N. At 280 mm stroke, verify guide alignment to prevent rod bending under side loads. For load holding on air loss, add an external pilot check valve or choose the SAIL/BSAI lock variant, as standard cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X280
- ✓ 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 SI160X280 FAQ
Yes, the SI160X280 is discontinued. The direct replacement is the SAI160X280, sharing the same ISO 15552 mounting interface, 160 mm bore, 280 mm stroke, force and G3/4 port.
It features a G3/4 port and delivers 10053 N push / 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X280
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X280 replacement — usually within 7-8 hours.