This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX70S, 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 SI160BX70S
The AirTAC SI160 Standard Cylinder SI160BX70S 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 SAI160BX70S, 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 → SAI160BX70S
- 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 SI160BX70S
The AirTAC SI160BX70S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160 mm bore, 70 mm stroke, and a SUS304 stainless steel piston rod. Delivering 10053 N of push force at 0.5 MPa, it is replaced by the SAI160BX70S direct upgrade. This successor retains the exact ISO 15552 mounting interface, G3/4 port, and M36x2 thread, fitting existing fixtures seamlessly.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. The original SI-SKU includes a piston magnet for legacy CS1-B/DS1-B sensors, whereas the SAI family uses current AirTAC switches.
Airtac SI160 Standard Cylinder SI160BX70S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX70S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX70S |
| 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 SAI160BX70S 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 SAI160BX70S 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 SI160BX70S
| 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 SI160BX70S Is Used
Heavy Stamping
Drives large presses and metal-forming tools requiring up to 14074 N of thrust at 0.7 MPa with stable rigid mounting.
Pallet Handling
Indexes heavy loaded pallets on conveyors, utilising the 40 mm SUS304 stainless rod for corrosion resistance in damp settings.
Replacing the Airtac SI160 Standard Cylinder SI160BX70S with the SAI160BX70S
To replace the discontinued SI160BX70S, order the SAI160BX70S. Verify your ISO 15552 mounting interface, G3/4 air port, and M36x2 rod thread. The -B rod is SUS304 stainless steel, and the -S denotes a magnet for position sensing. If you need to adjust force, the neighbouring 125 mm bore yields 6136 N at 0.5 MPa, while the 200 mm bore yields 15708 N. Note that a plain cylinder drifts without live air; for load holding, consider the SAIL lock or BSAI clamp-lock variants. The 50 mm adjustable air cushion only decelerates the load near stroke end.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX70S
- ✓ 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 SI160BX70S FAQ
Yes, the SI160BX70S is discontinued. The direct replacement is the SAI160BX70S. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 70 mm stroke, G3/4 port, and output force, so it drops directly into existing fixtures.
The G3/4 ported 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. The speed range is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX70S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX70S replacement — usually within 7-8 hours.