Tracking Wheel Axles (metric)

[fernandomaia]

Quality bearings such as 6202 have internal metric axle measurement (15mm), however the available bolts close at 15mm are all in inches. The way I found it is to make a axle with an internal thread. After installation insert a pin next to the 8x50mm allen bolt to prevent loosening. Im going to use a C type stop ring to lock the bearing.

This is the concept.