3309 Series Sonic Hub (6mm D-Bore)

Competition eligibility

Legal for FIRST Tech Challenge (FTC) and FIRST Robotics Competition (FRC). Eligibility is set by each season's game manual — check the current rules before you compete.

Sonic Hubs are more balanced than even set screw hubs (and with just as much clearance). Make them your go-to hub for high speed applications leaving behind concerns about marred shafts or lost set screws. The pattern to fasten components to, and the clamping mechanism to hold the hub onto a shaft, are completely isolated from one another. This means you can tighten the dual pinch bolts to clamp down on a shaft and you haven't distorted the holes you need to use for mounting components to the hub. Likewise, you can fasten the hub to a gear, sprocket, pulley or wheel prior to tightening onto a shaft since the clamping mechanism is able to function regardless of what the hub is connected to. Since the Sonic Hub clamping mechanism is pulled in toward the center, the hub can fit in recesses and clear where a 3301 Series Clamping Hub cannot.These Sonic Hubs have threaded holes on the 16mm pattern so that thru-hole parts can easily attach using M4 screws. The two pinch bolts offer excellent clamping force in a compact form-factor.The 6mm D-Bore Sonic Hub is compatible with our 6mm D-shafting as well as the 5201 and 5202 Series Gear Motors. This particular hub is an excellent option for mounting thru-hole components in high-speed applications that require a balanced hub that provides the reliable fastening method of a clamping hub.

size:6mm D-Bore

Technical drawing