This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX55S, 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 SI160BX55S
The AirTAC SI160 Standard Cylinder SI160BX55S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 55mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX55S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke55 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX55S
- 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 SI160BX55S
The AirTAC SI160BX55S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 55 mm stroke. It delivers 10053 N push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI160BX55S, matching the exact bore, stroke, force, port, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This -S variant includes a magnet for CS1-B/DS1-B switches, while the -B rod specifies SUS304 stainless steel for corrosion resistance.
Airtac SI160 Standard Cylinder SI160BX55S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX55S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX55S |
| Bore size | Ø160 mm |
| Stroke | 55 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 SAI160BX55S 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 SAI160BX55S 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 SI160BX55S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×55 | 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 SI160BX55S Is Used
Heavy Press Operations
Generates 14074 N at 0.7 MPa for high-tonnage stamping, forming, and heavy-duty press tasks.
Mold Clamping Fixtures
Provides reliable 10053 N clamping at 0.5 MPa to secure large injection molds during processing.
Replacing the Airtac SI160 Standard Cylinder SI160BX55S with the SAI160BX55S
To replace the SI160BX55S, order the SAI160X55S with the -S magnet and -B SUS304 rod. Confirm the ISO 15552 mounting accessory (LB, FA, TC, etc.), the G3/4 port thread (PT/G/NPT), and the M36x2 rod thread. The 55 mm stroke is well within the 1500 mm standard maximum, so no side-load guide is critical here. Sizing both ways: if you need less force, the 125 mm bore offers 6136 N push at 0.5 MPa; if you need more, the 200 mm bore provides 15708 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates. For load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX55S
- ✓ 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 SI160BX55S FAQ
Yes, the AirTAC SI160BX55S is discontinued. The direct replacement is the SAI160BX55S. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 55 mm stroke, 10053 N force, G3/4 port, and mounting interface.
This double-acting cylinder uses a G3/4 port. Force output is 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 SAI160BX55S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX55S replacement — usually within 7-8 hours.