This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX85, 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 SI160BX85
The AirTAC Airtac SI160 Standard Cylinder SI160BX85 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 SAI160BX85, 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 → SAI160BX85
- 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 SI160BX85
The AirTAC SI160BX85 is a discontinued double-acting ISO 15552 profile cylinder with an 85 mm stroke. It delivers a robust 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160BX85, a direct upgrade retaining the exact 160 mm bore, stroke, force, port, and ISO 15552 mounting interface.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU includes a SUS304 stainless steel rod for corrosion resistance but lacks a magnet, meaning it cannot accept legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160BX85 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX85 |
| 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 SAI160BX85 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 SAI160BX85 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 SI160BX85
| 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 SI160BX85 Is Used
Heavy Press Clamping
Ideal for securing large metal castings or heavy structural components during machining, utilizing the 10053 N push force at 0.5 MPa.
Stamping & Forming
Provides the sustained linear thrust required for heavy-duty stamping presses and metal forming lines, aided by 50 mm end cushions.
Replacing the Airtac SI160 Standard Cylinder SI160BX85 with the SAI160BX85
To replace the SI160BX85, order the SAI160BX85. Confirm the ISO 15552 mounting interface, the 160 mm bore, 85 mm stroke, and G3/4 port (available in PT, G, or NPT threads). Retain your original mounting accessories and note this SKU has no magnet (-S), so it cannot support position sensing. If you need more force than the 10053 N at 0.5 MPa, step up to a 200 mm bore; if less is required, a 125 mm bore provides 6136 N. Because this is a plain double-acting cylinder, the 50 mm adjustable air cushions only decelerate the load near stroke end—they will not hold it statically. For load holding on air loss, use an external pilot check valve, a rod lock, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX85
- ✓ 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 SI160BX85 FAQ
Yes, the AirTAC SI160BX85 is discontinued. The direct replacement is the SAI160BX85. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 85 mm stroke, output force, G3/4 port, and mounting interface, so it fits existing fixtures perfectly.
This 160 mm bore double-acting cylinder features a G3/4 air port and a 40 mm piston rod. It generates 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 SAI160BX85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX85 replacement — usually within 7-8 hours.