This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX70, 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 SI160BX70
The AirTAC Airtac SI160 Standard Cylinder SI160BX70 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 70mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX70, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX70
- 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 SI160BX70
The AirTAC SI160BX70 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 70 mm stroke. Delivering 10053 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI160BX70. This direct successor matches the exact ISO 15552 mounting interface, bore, stroke, force, and accessories.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU uses a SUS304 stainless steel rod (B option) for corrosion resistance, but lacks a magnet, meaning it cannot accept position sensors.
Airtac SI160 Standard Cylinder SI160BX70 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX70 |
| Bore size | Ø160 mm |
| Stroke | 70 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 SAI160BX70 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 SAI160BX70 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 SI160BX70
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×70 | 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 SI160BX70 Is Used
Heavy Press Operations
Drives large stamping and forming presses requiring 10053 N push force at 0.5 MPa, utilizing the 70 mm stroke for rapid, high-impact cycles.
Industrial Clamp Systems
Secures heavy fabricated steel components during machining or welding, safely holding loads up to 6032 N without drift during normal operation.
Vertical Load Lowering
Manages descent of 512 kg masses in material handling setups, relying on the 50 mm adjustable air cushions to decelerate the load at stroke end.
Replacing the Airtac SI160 Standard Cylinder SI160BX70 with the SAI160BX70
To replace the SI160BX70, order the SAI160BX70. Verify the ISO 15552 mounting interface, the 70 mm stroke, the G3/4 port, and your specific mounting accessory. Because this SKU lacks a magnet (-S), it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, switch to a magnet-equipped SAI model. The 160 mm bore yields 10053 N push at 0.5 MPa; if less force is needed, the 125 mm bore offers 6136 N. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. Use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX70
- ✓ 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 SI160BX70 FAQ
Yes, the SI160BX70 is discontinued. The direct replacement is the SAI160BX70. It is dimensionally interchangeable per the ISO 15552 mounting interface, retaining the same 160 mm bore, 70 mm stroke, 10053 N force, G3/4 port, and M36x2 rod thread.
This double-acting cylinder features a G3/4 air port. 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 force of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX70 replacement — usually within 7-8 hours.