Shimano FH-M6010-B 148mm Rear hub

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Hub Data
Manufacturer Shimano
Model FH-M6010-B
Position Rear
Axle Type 12mm thru
OLN 148 mm
Spoke Interface Type J-Bend
Brake Compatibility disc, Centerlock
Drive Interface Shimano 8/9/10/DynaSys (34.95mm)
Internal Gearing none
Dynamo Type none
Spoke Hole Diameter 2.6 mm
Left Flange Diameter 44 mm
Right Flange Diameter 45 mm
Left Flange Offset 36.6 mm
Right Flange Offset 23.8 mm
Mid-Flange Offset -6.4 mm (to the left)
Weight 0 g
Hub ID 450
Record Status Public
Created Mar 9, 2019 10:20am
hub dimension diagram
PLEASE NOTE: Shimano publishes hub dimensions in a relatively confusing manner on They seem to provide the outside-to-outside flange spacing, and an overall offset of the flanges as a whole. Wheelbuilders are interested in the distance from the midpoint between locknut faces to the middle of the flange (not the inside or outside face). When necessary, I convert Shimano's data into useful spoke calculation dimensions with some simple arithmetic, and factor in 3mm thick hub flanges (an approximation). The formula is to divide spacing by two, add or subtract the overall offset, then subtract half of our assumed 3mm flange thickness. Please check the notes to see if the values for this part are derived from Shimano's published data or actual measurements of a hub specimen. -Karl
NOTE: Flange spacing on is listed as outside-to-outside spacing and an overall offset. Wheelbuilders are interested in the middle of the flange relative to the midpoint between dropouts, so these numbers have been based on published values and adjusted by half of an assumed 3mm flange thickness. Ideally the offsets can be verified on a real specimen at some point. -Karl
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