Renner USA Used by the World's Finest Piano Manufacturers for More Than a Century  
Blüthner - Bohemia - Bösendorfer - Estonia - Fazioli - August Förster - Grotian-Steinweg
Guangzhou - Kawai - Mason & Hamlin - Petrof - Pfeiffer - Pleyel - Pollman - Pramberger
Royale Piano - Rönisch Hupferd - Samick - Sauter - Schimmel - Schulze - Steinberg
Steingraeber - Steinway & Sons - Charles Walter - Whelpdale - Young Chang - Zimmermann
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Technical Services

Services1 Services2

Renner USA offers comprehensive hammer services at their state of the art Arizona plant. All Renner hammers can be custom bored to individual specifications with the hammer tails properly radiused. To improve side clearance and to reduce weight Renner USA can precisely taper each hammer. This taper, extending the whole length of the hammer from the crown to the tail, recreates the configuration found on fine American grands from the classic era. For the ultimate in "out of the box" convenience the hammerheads can also be pre-filed and pre-voiced.

Renner USA will hang any style of Renner hammers to any style of Renner grand hammer shanks. Our hammer hanging services are available to technicians in two levels of precision. The most common method is the Factory Level Placement, where the hammers are hung to a uniform and fixed distance on the shank. This is the procedure used by most piano factories and is adequate for many situations. Custom Level Placement is a higher level service which preserves the original placement of the hammers, which is important for vintage Steinway and other quality pianos. With this process, we duplicate the original samples to determine the original strike points. There is no additional charge for this special service which achieves the highest standard of accuracy.

Additional Services:
Full Side Tapering


Custom Hammer Boring

Technician on Demand

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