This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX275S, 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 SI160AX275S
The AirTAC SI160 Standard Cylinder SI160AX275S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX275S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX275S
- 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 SI160AX275S
The AirTAC SI160AX275S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 275 mm stroke. Built with an extruded aluminum barrel, it delivers 10053 N of push force at 0.5 MPa. The direct replacement is the SAI160AX275S, which matches the original bore, stroke, force, G3/4 port, and ISO 15552 mounting interface for a seamless fixture swap.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. It also adds lock and valve variants the SI lacked, like SAIL and BSAI. This -A and -S configured unit features a SUS420J2 stainless rod and a piston magnet for CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160AX275S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX275S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX275S |
| Bore size | Ø160 mm |
| Stroke | 275 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 SAI160AX275S 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 SAI160AX275S 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 SI160AX275S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×275 | 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 SI160AX275S Is Used
Heavy Press Forming
Drives large stamping and forming presses requiring 10053 N of thrust at 0.5 MPa, using the adjustable 50 mm cushion to halt heavy masses smoothly.
Automated Clamp Systems
Secures large fabricated components during machining, relying on the robust 160 mm bore and M36x2 rod thread for rigid, high-force clamping.
Replacing the Airtac SI160 Standard Cylinder SI160AX275S with the SAI160AX275S
To replace the SI160AX275S, order the SAI160AX275S, confirming the ISO 15552 mounting interface, 160 mm bore, 275 mm stroke, G3/4 port, and mounting accessories. The -S magnet enables current AirTAC switches, while the -A rod specifies SUS420J2 stainless steel over standard carbon steel. If you need less force, a 125 mm bore yields 6136 N push at 0.5 MPa; for more power, a 200 mm bore offers 15708 N. Remember, a plain cylinder drifts without live air—the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. Since the 275 mm stroke is under 300 mm, side-load rod-bending risks are low, but proper guide alignment is still advised.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX275S
- ✓ 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 SI160AX275S FAQ
Yes, the SI160AX275S is discontinued. The direct replacement is the SAI160AX275S. It is dimensionally interchangeable per ISO 15552, retaining the exact 160 mm bore, 275 mm stroke, output force, G3/4 port, and mounting interface. You simply order the SAI equivalent for your existing fixtures.
The 160 mm bore 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, 18095 N push at 0.9 MPa, and a theoretical maximum of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX275S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX275S replacement — usually within 7-8 hours.