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Three-phase synchronous motors DS 200

Three phase synchronous motors DS 200 - 9305 Bearings and shaft load

All machines are equippedwith rolling-contact bearings. Normally, the non-locating bearing (ball bearing) is intended for the drive end and the locating bearing (ball bearing) for the non-drive end. For increased radial force, machineswith rollerbearings on the drive end are available. Please specify radial forces in your order. Determination of radial forces F
R When using pulleys, the radial load is calculated according to the followingformula:P = Nominal power in kW Fk210PnD -1 R7 [N] n = Nominal speed in min D = Disk diameter in mm The belt tightening factor k is approximately:k = 1.8...2.5 for V-belt k = 2.2..3.5 for flat belt (Observe specifications of the belt manufacturer) For a safe transmission of the torque it is necessary to utilise the entire bearing length of the key. Otherwise, an excessivecompressive load per unit area may occurat the key which may result in a motor defect. Permissible radial forces F
R at the shaft end The ball bearings are dimensioned for a calculated service life of approx. 20,000 operating hours
1) . The loadvaluesspecified in the following must not be exceeded. The specified permissible radial forces F
R are valid only for horizontal mounting of the motor without additionalaxial forces. If additional forces occur, please consult the manufacturer. Axial load of the motor shaft When mounting clutches,pulleys, etc. onto the motor shaft, axial forces must not occur! Therefore use the internal thread of the shaft end as assembly aid. Three-phasesynchronousmotors DS 200Technical alterations reserved Baumüller Nürnberg GmbH 11/02 7