SON 28 15 6-Bolt Disc Hub Dynamo

The first hub dynamo for a 15 mm thru-axle: the Son 28 15 by SON

Hub dynamo or thru-axle? Until now a demanding biker had to do without one of them. The thru-axle stiffens the suspension fork and allows a more precise positioning of the hub, which is particularly useful for disc brakes. More and more mountain bikers want to use the advantages of a hub dynamo light system. No wonder that SON was asked more and more often for a thru-axle hub dynamo. In order to bring both under one roof, SON has not only changed the axle construction, but also essential parts of the generator. The result: A hub dynamo that looks, is equally robust and has the same electrical values as the Son 28 Disc, but with a large " hole" . Also the weight could be kept surprisingly low with 460 g.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of used batteries and electrical equipment can be found here.

Specifications:

Output: 6V/3W (according to StVZO)
Efficiency: 65 % at 15 km/h in a 28" wheel
Power Consumption at Idle Speed: 0.5 W at 15 km/h in a 28" wheel
Over Locknut Dimension: 15 x 100 mm thru-axle
Spoke Hole Count: 32 hole, 36 hole
Brake Type: 6-bolt disc

Technical Information:

Series: Son 28
Application: All Mountain, Touring, City
Body Material: aluminium (6082-T6)
Bearings: deep groove ball bearings
Seals: labyrinth seal and gaskets
Flange Distance (L/R): 47.5 mm (22.5 mm/25 mm)
Pitch Circle Diameter (L/R): 59 mm / 54 mm
Spoke Hole Diameter: 2 mm
Wire Connector: 4.8 mm flat plug, 2-pole, insulated return

Approved For:

Street Use in Germany: yes
Check Number: K~~834

Compatibility:

- for 16" to 29" wheels (400-742 mm)
- for 15 mm thru-axle
- for 3 mm coaxial cable

Features:

- neodymium iron boron magnetic rotor, 26-poles
- hollow axle made from cold worked, stainless steel

Manufacturer Numbers:

black 28 hole: 332812
black 32 hole: 333212
black 36 hole: 333612
silver-anodised 32 hole: 333292
silver-anodised 36 hole: 333692
red 32 hole: 333222
red 36 hole: 333622
blue-anodised 32 hole: 333242

Contents:

- 1 x SON Son 28 15 6-bolt disc dynamo hub
- 1 x flat plug