Bosch has just launched its first-ever hub motor for urban e-bikes, bringing Smart System tech to a new market segment.
Bosch has long dominated the premium mid-drive e-bike market, but now the company is expanding into a new category with the launch of its first rear hub motor system. Called the Hub Line, the new drive unit is designed for urban e-bikes, offering a lightweight, connected platform designed for commuters and city riders.
The move is significant for Bosch, which has built its reputation almost entirely around mid-drive systems. While hub motors are common on city e-bikes thanks to their simplicity, lower cost, and quiet operation, Bosch has until now largely avoided the segment. Bosch’s hub motor market has previously focused on much larger units used on seated scooters and electric motorcycles. But now the company is focusing on the same market that it has long dominated in the mid-drive segment: urban electric bicycles.
The new Hub Line motor delivers 45 Nm of torque and weighs just 2.3 kg (5.1 lb). Bosch says the system uses multiple onboard sensors to adapt motor output to a rider’s behavior, helping provide smooth acceleration from traffic lights and natural-feeling assistance on moderate climbs. The company has also designed the motor to work with electronic shifting systems, including automatic gearboxes, allowing the motor and drivetrain to coordinate in real time. That would be a major difference compared to the litany of simple, lower cost hub motors out there that largely work as separate systems independent of a bicycle’s gearing.
