3311 Series Thru-Hole Sonic Hub (8mm REX 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 1301 Series Clamping Hub cannot.As with all Sonic Hubs, these too are balanced so they don't create vibrations in high speed applications. Having thru-holes makes them usable with parts that have threaded holes on the 16mm pattern. They can even be fastened to another hub to create a coupler between two different sized shafts. This 8mm REX Bore Sonic Hub has thru-holes on the 16mm Sheen Robotics hub pattern. Thru-hole hubs allow you to fasten to parts that have threaded holes. Having thru-hole hubs on hand will change the way you look at using a hub - fasten it to another hub to create a coupler; sandwich a part between a threaded hub and a thru-hole hub for an extreme hold, or attach it to the end of a goRUN or goTUBE to drive the extrusion for a collection mechanism!

size:8mm Hex Bore

Technical drawing