This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX170S, 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 SI160BX170S
The AirTAC SI160 Standard Cylinder SI160BX170S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 170mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX170S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke170 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX170S
- 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 SI160BX170S
The AirTAC SI160BX170S is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 170mm stroke. Delivering 10053 N push force at 0.5 MPa, it utilizes a SUS304 stainless piston rod for corrosion resistance and includes a piston magnet for CS1-B/DS1-B switches. The direct replacement is the SAI160BX170S, matching the G3/4 port, M36x2 thread, and 50mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The broader SAI family also adds SAIL, SAIF, and BSAI lock variants absent in the legacy line.
Airtac SI160 Standard Cylinder SI160BX170S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX170S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX170S |
| Bore size | Ø160 mm |
| Stroke | 170 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 SAI160BX170S 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 SAI160BX170S 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 SI160BX170S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×170 | 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 SI160BX170S Is Used
Heavy Press Clamping
Secures large metal workpieces in machining centers using the 10053 N push force, with the SUS304 rod resisting coolant corrosion.
Mold Ejection Systems
Ejects dense composite or metallic molds from fixtures, utilizing the 170mm stroke and robust M36x2 rod-end threading.
Replacing the Airtac SI160 Standard Cylinder SI160BX170S with the SAI160BX170S
To replace the SI160BX170S, order the SAI160BX170S and verify the ISO 15552 mounting interface, 170mm stroke, G3/4 port, and magnet option. The -B rod denotes SUS304 stainless steel; retain this if corrosion resistance is needed. Sizing both ways: neighboring 125mm yields 6136 N push at 0.5 MPa, while 200mm yields 15708 N. Note that a standard cylinder drifts on air loss as cushions only decelerate; use a SAIL or BSAI lock variant, external rod lock, or pilot check valve for load holding. At 170mm stroke, side-load risks are low, but ensure guide alignment to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX170S
- ✓ 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 SI160BX170S FAQ
Yes, the SI160BX170S is discontinued. The direct replacement is the SAI160BX170S. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 170mm stroke, 10053 N force, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 air port. 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 force of 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX170S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX170S replacement — usually within 7-8 hours.