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Bolshoi refurbishment by Bosch Rexroth

The customer required a general refurbishment of the stage machinery at the Bolshoi Theater, a listed World Heritage Site. This had to be carried out during the ongoing renovation of the building behind the fully preserved historic facade, which dates back to 1825.

The renovation included the supply, assembly and commissioning of all the drive and control systems for the upper stage and lower stage machinery. Other trades were also needed for the supply and assembly of, for example, the organ, glockenspiel and acoustic shell. The subcontractor was to act as general contractor.

Double-deck platforms are used to carry out quick changes in backdrops or complete stage sets. Both levels were to be made suitable for performances.

The 520 square meter main stage is dominated by seven double-deck podia of equal size. Each of the 7 stage podia is 22 meters long, three meters wide and ten meters high, with an unladen weight of approximately 70 tons.

A high-performance control system must be able to move the stage machinery used during the performance, store motion sequences and monitor processes.

And it is crucial that all motion sequences are highly precise and carried out without the audience hearing any noise.

A further challenge was the need for complete safety: with high loads moving above, artists and stagehands must still be able to move around the stage and the audience must be safely protected.