This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX155, 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 SI160BX155
The AirTAC Airtac SI160 Standard Cylinder SI160BX155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX155
- 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 SI160BX155
The AirTAC SI160BX155 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 155 mm stroke, delivering a 10053 N push force at 0.5 MPa. It features a 40 mm SUS304 stainless steel rod (the -B option) and a G3/4 air port. Because this SKU lacks a magnet, it cannot accept a position sensor.
You must replace it with the direct replacement SAI160BX155. It shares the exact ISO 15552 mounting interface, force, and port. The SAI upgrade uses two Y-shaped one-way piston seals for low start-up pressure and long life. The family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI160 Standard Cylinder SI160BX155 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX155 |
| Bore size | Ø160 mm |
| Stroke | 155 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 SAI160BX155 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 SAI160BX155 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 SI160BX155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×155 | 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 SI160BX155 Is Used
Heavy Stamping Press
Drives large platens in metal forming, using the 10053 N push force at 0.5 MPa to shape thick steel blanks reliably.
Injection Mold Ejector
Ejects large molded plastic parts from heavy machinery, relying on the robust 40 mm SUS304 stainless rod for corrosion resistance.
Replacing the Airtac SI160 Standard Cylinder SI160BX155 with the SAI160BX155
To replace the discontinued SI160BX155, order the SAI160BX155. Confirm the ISO 15552 mounting interface, the 155 mm stroke, and the G3/4 port. This SKU has no -S magnet, so it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, switch to a magnet-equipped SAI. The 40 mm SUS304 rod (-B) offers corrosion resistance versus standard carbon steel. For sizing, a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. A plain cylinder drifts on air loss; the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. Stroke is under 300 mm, so rod bending is minimal, but always guide the load.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX155
- ✓ 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 SI160BX155 FAQ
Yes, the AirTAC SI160BX155 is discontinued. The direct replacement is the SAI160BX155. It is dimensionally interchangeable per ISO 15552, matching the bore, stroke, force, G3/4 port, and mounting interface exactly.
This double-acting cylinder has a G3/4 port. It generates 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. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX155
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