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Schaeffler has developed a compact bottom bracket that provides smoother running for city and touring bicycles.

The new BB29 FAG bottom bracket unit is said to ensure that the rider uses less energy to reach his or her destination.

The bottom bracket is the main bearing position on a bicycle.

Schaeffler’s new bottom bracket unit provides smooth operation thanks to its optimised bearing design.

Unlike conventional bottom brackets, the bearings do not need to be braced in the frame.

The shaft of the BB29 unit is coated with a special corrosion-protection agent that provides corrosion resistance in salt-spray tests of more than 200 hours.

Conventional bottom brackets are normally zinc plated, offering limited corrosion protection.

In addition, the two ball bearings on the BB29 are sealed on both sides and lubricated for life, according to the company.

Schaeffler claims that this ensures high reliability and zero maintenance for the entire service life of the bearings.

The glass-fibre-reinforced plastic housing and dual-fix design enable installation with available tools.

The profile of the housing is suitable for holding both FAG tools (external) and Shimano tools (internal).

The reduced diameter in the centre of the bearing unit creates sufficient space for inserting cables for lights or other electrical connections on the cycle.

The BB29 bottom bracket is available for axle lengths of 119mm, 122.5mm and 127mm as pre-mounted compact inner bearings with two hexagonal bolts: as a TC version on the left housing with a flange on the frame and as a TO version with open left housing without a flange.

The BB29 complements Schaeffler’s previous BBL66 bottom bracket range.

With its high-precision and high-load-capacity components, it offers smooth operation and a long rating life, even under maximum loads.

The BBL66 is said to be ideal for load-carrying and freight cycles and has been the preferred bottom bracket in bicycles used by the German postal service.

For high-performance applications in premium racing bicycles, the company offers special, high-technology bottom brackets.

The FAG Cronitect hybrid rolling bearing has been in use for several years now.

The combination of Cronitect heavy-duty steel for the bearing rings, ceramic rolling elements, improved ball raceway geometry and a new low-friction seal design is claimed to provide various technical advantages, including smoother operation and improved reliability.

Compared with conventional rolling bearings, resistance to corrosion and rating life are also higher.

In addition, the weight of the bearing is reduced.

Campagnolo, an Italian brand of racing-bike components, uses Schaeffler’s FAG Cronitect hybrid rolling bearings in its Super Record range of premium racing bikes under the brand name Cult, which stands for Ceramic Ultimate Level Technology.

Since 2009, this bearing technology has also provided inline skaters with more dynamic power and smoother operation.

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