Shimano HF08 Tandem 145mm Rear hub

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Hub Data
Manufacturer Shimano
Model HF08 Tandem
Position Rear
Axle Type 10mm
OLN 145 mm
Spoke Interface Type J-Bend
Brake Compatibility drum, thread-on
Drive Interface Shimano 8/9/10/DynaSys (34.95mm)
Internal Gearing none
Dynamo Type none
Spoke Hole Diameter 2.6 mm
Left Flange Diameter 62.6 mm
Right Flange Diameter 62.6 mm
Left Flange Offset 28 mm
Right Flange Offset 23 mm
Mid-Flange Offset -2.5 mm (to the left)
Weight 538 g
Hub ID 94
Record Status Public
Created Feb 10, 2010 11:07pm
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
6/30/16 -- Diameters and offsets tweaked very slightly (originally from 2010 Q catalog) to match a real-life specimen. Registration face of the drum brake threading is offset ~36.6mm from locknut/dropout plane. 12mm of threading from registration face to end of threads. Axle is 10x1 threaded, and the left locknut and outer spacer can be removed to get the hub (close, not exactly) to 135mm.

From left to right:
- 3.95mm outer locknut (18.8mm OD)
- 1.15mm washer (16.8mm OD)
- 6.45mm spacer (19.6mm OD)
- 1.15mm washer (16.8mm OD)
- locknut (with knurled face)
- washer
- left cone

Removing the outer locknut and spacer and both washers leaves the hub spaced 132mm. Putting both of the removed thin washers under the locknut makes it about 134.5mm