This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX85S, 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 SI160BX85S
The AirTAC SI160 Standard Cylinder SI160BX85S 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 SAI160BX85S, 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 → SAI160BX85S
- 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 SI160BX85S
The AirTAC SI160BX85S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 85 mm stroke. It delivers a push force of 10053 N at 0.5 MPa (pull 9425 N) and features a G3/4 port, M36x2 rod thread, and a SUS304 stainless piston rod for corrosion resistance. The direct replacement is the SAI160BX85S, which matches the original ISO 15552 mounting interface, bore, stroke, force, port, and mounting accessories exactly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked. This SI -S model includes a piston magnet for legacy CS1-B/DS1-B sensors; the SAI replacement uses current AirTAC switches.
Airtac SI160 Standard Cylinder SI160BX85S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX85S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX85S |
| 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 SAI160BX85S 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 SAI160BX85S 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 SI160BX85S
| 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 SI160BX85S Is Used
Heavy Press Clamping
Generates up to 14074 N at 0.7 MPa to secure large steel fabrications during heavy-duty machining and press operations.
Injection Molding Extraction
The SUS304 stainless rod provides corrosion resistance when extracting heavy molded parts in humid or wet factory environments.
Replacing the Airtac SI160 Standard Cylinder SI160BX85S with the SAI160BX85S
To replace the discontinued SI160BX85S, order the SAI160BX85S. Confirm the ISO 15552 mounting interface, the 85 mm stroke, the G3/4 port (PT/G/NPT thread options), and your mounting accessory. The -S magnet and -B SUS304 stainless rod must be specified on the new order. Sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. If you need to hold the load on air loss, a plain cylinder drifts; the cushion only decelerates. Use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. For any stroke over 300 mm, add a guide to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX85S
- ✓ 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 SI160BX85S FAQ
Yes, the SI160BX85S is discontinued. The direct replacement is the SAI160BX85S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 85 mm stroke, output force, G3/4 port, and mounting interface.
This double-acting cylinder has a G3/4 port. The thrust 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.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX85S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX85S replacement — usually within 7-8 hours.