The SON 28 12 Center Lock Disc hub dynamo is compatible with 12 mm thru-axle systems and brake rotors with Shimano Center Lock attachment. You can use it in wheels from 16″ to 29″ and also charge electronic devices with it using a charger. Even when travelling slowly, the Son 28 12 provides plenty of light.
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: 12 x 100 mm thru-axle
Spoke Hole Count: 28 hole, 32 hole, 36 hole
Brake Type: Center Lock Disc
Technical Information:
Series: Son 28
Application: Road, Gravel, City & Touring
Body Material: aluminium (6082-T6)
Bearings: deep groove ball bearing 629-2RSH (SKF)
Seals: labyrinth seal, gaskets and pressure compensation system
Flange Distance (L/R): 48 mm (23 mm/25 mm)
Pitch Circle Diameter (L/R): 54 mm / 54 mm
Spoke Hole Diameter: 2 mm
Wire Connector: 4.8 mm flat plug, 2-pole, insulated return