This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX85S, 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 SI160AX85S
The AirTAC Airtac SI160 Standard Cylinder SI160AX85S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 85mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160AX85S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160AX85S
- 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 SI160AX85S
The AirTAC SI160AX85S is a discontinued double-acting ISO 15552 profile cylinder with an extruded aluminum barrel. It delivers 10053 N push force at 0.5 MPa, features a G3/4 port, and uses a SUS420J2 stainless piston rod (A option) for corrosion resistance. The direct replacement is the SAI160AX85S, which retains the same bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SI -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI160 Standard Cylinder SI160AX85S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX85S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX85S |
| Bore size | Ø160 mm |
| Stroke | 85 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 SAI160AX85S 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 SAI160AX85S 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 SI160AX85S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×85 | 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 SI160AX85S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures where the 10053 N push force at 0.5 MPa handles substantial metalworking resistance.
Automated Clamp Systems
Secures heavy components during machining using the robust 40 mm SUS420J2 stainless rod in corrosive environments.
Replacing the Airtac SI160 Standard Cylinder SI160AX85S with the SAI160AX85S
To replace the SI160AX85S, order the SAI160X85S with the A rod and S magnet. Confirm the ISO 15552 mounting interface, G3/4 port, and M36x2 thread match your fixture. If you need more force, the neighboring 200 mm bore offers 15708 N push at 0.5 MPa; if less is acceptable, the 125 mm bore provides 6136 N. A plain cylinder drifts on air loss, so for load holding use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. The cushion only decelerates. The Viton H seal option raises the temperature range to 0-150 C.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX85S
- ✓ 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 SI160AX85S FAQ
Yes, the SI160AX85S is discontinued. The direct replacement is the SAI160AX85S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 85 mm stroke, force, G3/4 port, and mounting accessories.
The double-acting cylinder delivers 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 max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s, with a 50 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX85S replacement — usually within 7-8 hours.