Replacement Axle and Wind Cups



New axle-wind cup assembly, introduced in November 2019 for the Wind Instrument RB™. Also fits all previous models. Stainless steel axle and miniature ball bearings for long life even in constant high winds. Smooth, silent rotation. Maintenance-free.

Wind cups, high-precision axle and ball bearings are in a single assembly. There is also a tiny magnet in the base of the wind cups for the wind speed sensor.

If you wish to replace the cups yourself, the Wind Instrument is designed to be disassembled easily, following these disassembly instructions. We also have a $45 service option, if you want to send in your Wind Instrument to get the new cups and axle installed.  Add this when ordering the cups if you want us to send back your Wind Instrument with the new wind cups and axle installed.

The box is shipped inside a larger corrugated box since the cups sometimes get crushed during shipping if a smaller box is used. With FedEx Air Express, the delivery time is usually only about 2 days, although this new assembly does not start shipping until about the 3rd week of November 2019. You’ll receive a tracking number by email when the package is sent.

Additional information

Weight .024 lbs
Dimensions 12 x 9 x 7 in

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