This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX45S, 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 SI160BX45S
The AirTAC SI160 Standard Cylinder SI160BX45S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 45mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX45S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke45 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX45S
- 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 SI160BX45S
The AirTAC SI160BX45S is a discontinued double-acting ISO 15552 profile cylinder. Built with an extruded aluminum barrel and a SUS304 stainless piston rod (-B), it delivers 10053 N push force at 0.5 MPa through its G3/4 port. AirTAC replaced this legacy unit with the SAI160BX45S, a direct sharing the exact ISO 15552 mounting interface, 45 mm stroke, and M36x2 rod thread.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked, and your -S magnet works with legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160BX45S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX45S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX45S |
| Bore size | Ø160 mm |
| Stroke | 45 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 SAI160BX45S 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 SAI160BX45S 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 SI160BX45S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×45 | 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 SI160BX45S Is Used
Heavy Press Operations
Drives high-tonnage pressing and forming stations where the 10053 N push force at 0.5 MPa is required to seat or stamp heavy components.
Stainless Rod Clamping
Ideal for humid or washdown environments thanks to the -B SUS304 stainless piston rod, providing reliable clamping without corrosion.
Replacing the Airtac SI160 Standard Cylinder SI160BX45S with the SAI160BX45S
To replace the SI160BX45S, order the SAI160BX45S. Verify your ISO 15552 mounting fixtures, the G3/4 port, and the M36x2 rod thread. The -B rod specifies SUS304 stainless steel, and the -S denotes a magnet for CS1-B/DS1-B switches. If you need more force, the neighboring 200 mm bore offers 15708 N push at 0.5 MPa; if less is required, the 125 mm bore provides 6136 N. Remember that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX45S
- ✓ 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 SI160BX45S FAQ
Yes, the SI160BX45S is discontinued. The direct replacement is the SAI160BX45S. It shares the exact ISO 15552 mounting interface, 45 mm stroke, 10053 N force, G3/4 port, and SUS304 rod, fitting your existing fixtures perfectly.
This 160 mm bore cylinder features a G3/4 air port and M36x2 rod thread. It 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 maximum of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX45S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX45S replacement — usually within 7-8 hours.