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combinations of variable-speed electric motors and pumps
Product category: Plastics processing equipment
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These are combinations of variable-speed electric motors and pumps. Given the ability to reduce the electric motor speed energy can be saved, especially while idling. Depending on the machine cycle, the speed reduction can contribute significant energy savings and noise reduction during slow movements. Rexroth provides two concepts for this solution. One is a simple frequency converter using a standard electric motor and variable displacement pump with electronic adjustment (e.g. DFEC system) and the other is a highly dynamic servo-motor with fixed displacement pump. Both systems can control pressure and flow on a machine. The first variant is fitted with today's proven pump technology (A10-SYDFEE), which meets all requirements with regard to dynamics and accuracy. The demands made on the frequency converter and the electric motor are very low, especially with regard to dynamics and the generation of high torques when holding a certain pressure. The second variant employs high-dynamics servo-motors with feedback and associated converters, in most of the cases with local intelligence. With this method there are additional engineering considerations; apart from continuous torque, acceleration torques must be taken into account. Rexroth can satisfy the demands made on the components largely utilizing combinations from the standard product range. A new technical challenge is highly dynamic pressure control via the pump and the servo-motor. Here, hydraulics-specific controller strategies can be utilized, which are known from applications of the variable displacement pump. Due to this multiple technology drive competence, Rexroth is positioned to offer its customers optimum solutions.

Gosourcing Supplier Details

Supplier Details
Bosch Rexroth China
Supplier: Bosch Rexroth China
Contact name: Ivy Zhu
Job title: market
Phone: 86-021-38666000-000
Fax: 86-21-38666111-000
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Address: No. 333, Fu Quan North Road, Chang Ning District, Shanghai.

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