These CNC-friendly aluminium wheel hex adapters are designed as an aftermarket widening solution for AXIAL Racing RR10 Bomber compatible chassis, delivering a controlled 23mm assembly width to enhance lateral stability on technical courses. They mount to 4mm threaded wheel shafts and accept wheels with a nominal 5mm centre hole.
The retention system integrates a Delrin insert within the hex, an O-ring on one face, a spring steel retaining ring, a compression spring with washers, and a stainless screw opposite the collar. This engineered stack prevents unwanted axial movement while allowing free rotation on bearings under low-speed, high-traction crawling loads.
Service and installation: fit the hex to the 4mm threaded shaft and confirm the Delrin collar seats without eccentricity, compress the spring stack and torque the stainless screw to eliminate axial play while preserving bearing spin. Inspect O-ring and collar wear at regular intervals and replace consumables to maintain repeatable fitment.