Bosch Rexroth expands ball screw assemblies range

Ball Screw Assemblies from Bosch Rexroth with new lead angles to optimise drives and linear motion systems.

Tectra Automation is helping machine builders optimise drive chains with more precise drive and linear motion systems and improved dynamics with 4 new Bosch Rexroth Ball Screw Assemblies sizes now available in South Africa.

The 4 new sizes (8 x 5, 40 x 25, 40 x 30 and 50 x 30) provide quicker linear movements and increase productivity for machine manufacturers. With multi-start spindles and multi-start nuts, the range’s load ratings and service life are both increased.

The portfolio includes solutions for driven screws and nuts as well as a wide range of nuts with DIN and Rexroth connection sizes.

For most applications, machine manufacturers use pre-tensioned nuts for zero-clearance movements with a high level of repeatability. Bosch Rexroth offers off-the-shelf pre-tensioned nuts as well as types which users set individually.

The use of a double-start nut and spindle doubles the number of balls without increasing the amount of space required and thus increases the load rating. By using double-start nuts constructors can select a more compact construction with smaller dimensions or increase the service life when using systems of the same size. The portfolio includes multi-start spindles and nuts as standard.

Bosch Rexroth manufactures the spindles as a mass-produced warehouse product using a rolling process. The high precision of manufacture allows for various nut types to be produced separately. As a result, Bosch Rexroth can deliver order-specific designs with standardised or individual end machining at a fast rate.

To simplify dimension selection for Ball Screw Assemblies, Bosch Rexroth offers the Linear Motion Designer (LMD) calculation tool, allowing constructors to configure the variants they require using the online Ball Screw Assembly Configurator. With image control, users are guided through the configuration process and, if parameters have changed, a plausibility check is automatically initiated. The LMD then generates the downloadable CAD data.

For more information, contact Tectra Automation today.

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