This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX500S, 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 SI160BX500S
The AirTAC SI160 Standard Cylinder SI160BX500S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX500S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke500 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX500S
- 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 SI160BX500S
The AirTAC SI160BX500S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 500 mm stroke. It delivers a 10053 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI160BX500S, a direct replacement retaining the exact ISO 15552 mounting interface, M36x2 rod thread, and 50 mm cushions.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This SI160BX500S variant uses a SUS304 stainless piston rod for corrosion resistance, includes a magnet for CS1-B/DS1-B sensors, and supports Viton H seals for 0-150 C heat.
Airtac SI160 Standard Cylinder SI160BX500S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX500S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX500S |
| Bore size | Ø160 mm |
| Stroke | 500 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 SAI160BX500S 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 SAI160BX500S 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 SI160BX500S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×500 | 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 SI160BX500S Is Used
Heavy Press Systems
Drives large platens and press fixtures where the 14074 N push at 0.7 MPa and 50 mm cushions absorb high kinetic energy.
Automated Welding Jigs
Clamps large structural frames in robotic cells, utilizing the 160 mm bore force and 500 mm reach for deep assemblies.
Replacing the Airtac SI160 Standard Cylinder SI160BX500S with the SAI160BX500S
To replace the SI160BX500S, order the SAI160BX500S and verify the ISO 15552 mounting interface, G3/4 port, and 500 mm stroke. Because this is a 500 mm stroke, use external guides to prevent rod bending and side-load damage. If sizing up or down, a 200 mm bore offers 15708 N push at 0.5 MPa, while a 125 mm bore provides 6136 N. This -S model has a magnet for legacy CS1-B/DS1-B sensors; the SAI uses current AirTAC switches. The cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF valve variant is unavailable for this bore.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX500S
- ✓ 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 SI160BX500S FAQ
Yes, the SI160BX500S is discontinued. The direct replacement is the SAI160BX500S. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G3/4 port, and mounting fixtures exactly.
The G3/4 port feeds a 40 mm rod. Forces are: 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX500S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX500S replacement — usually within 7-8 hours.