DST 135-315 Three-phase synchronous high-torque

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Synchronous Torque Motor DST 135 - 315 Bearings and shaft load All machines are equipped with rolling-contact bearings. On the solid-shaft version, the non-locating bearing is intended for the drive end and the locating bearing for the non-drive end. On the hollow-shaft version, it is the other way around. Ball-bearing assignment for solid-shaft version Ball-bearing assignment for hollow-shaft version Frame size D-end ND-end Frame size D-end ND-end 135 6217 2ZRC3 6217 2ZRC3 135 61838 61836 200 6220 2ZRC3 6220 2ZRC3 200 61838 61836 260 6226 2ZRC3 6220 2ZRC3 315 6226 2ZRC3 6226 2ZRC3 Determination of radial forces FR When using pulleys, the radial load is calculated according to the following formula: PN = Nominal power in kW F R 7 2⋅10 ⋅P k n⋅D N = [N] n = Nominal speed in rpm D = Pulley 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) To ensure safe and reliable torque transmission, it is necessary to utilize the entire bearing length of the key. Otherwise, the key may be subjected to an excessive compressive load per unit area, which in turn can result in the failure of the motor. The pulley must be mounted up to the shaft shoulder and only tightened to the following maximum tightening torques. Gland M12 M16 M20 M24 Tightening torque 33.0 Nm 80 Nm 160 Nm 255 Nm Permissible radial forces FR at the shaft end The ball bearings have been dimensioned for a calculated service life of approx. 20,000 operating hours 1) . The load values specified below must not be exceeded. The specified permissible radial forces FR are only valid for horizontal mounting of the motor without additional axial forces. If additional axial forces are involved, please consult the manufacturer. Axial load on the motor shaft When mounting clutches, pulleys, etc. onto the motor shaft, no axial forces must be applied! Therefore, use the internal thread of the shaft end as an assembly aid. 1 ) Average operating temperature < 90°C Technical alterations reserved 07/2007 DST 135 – 315 16 Baumüller Nürnberg GmbH
Synchronous Torque Motor DST 135 - 315 Radial force diagrams Example n [ 1/min ] 6000 5000 4000 3000 2000 1000 A Kugellager 0 0 0 1000 2000 3000 4000 Fr [ N ] 5000 6000 7000 8000 Explanation of the example Welle Kugellager / Ball bearing Rollenlager / Roller bearing Welle / Shaft B Rollenlager Force acting on the end of the shaft end (for force acting on the middle of the shaft end Fr x 1.1) Shaft end with keyway Case A – Ball bearing: The radial force Fr of the application is used to determine the possible maximum speed of the bearing in the “Ball bearing” characteristic. Radial force 1100 N => maximum speed 3250 rpm The maximum transmittable torque is based on the “Shaft” characteristic. Radial force 1100 N => maximum transmittable torque 450 Nm Case B – Roller bearing: The radial force Fr of the application is used to determine the possible maximum speed of the bearing in the “Roller bearing” characteristic. Radial force 4300 N => maximum speed 1500 rpm The maximum transmittable torque is based on the “Shaft” characteristic. Radial force 4300 N => maximum transmittable torque 345 Nm The roller bearing requires a minimum radial force of 800 N to avoid bearing damage. DST 135 - 315 07/2007 Technical alterations reserved Baumüller Nürnberg GmbH 17 500 450 400 350 300 250 200 150 100 50 M [ Nm ]
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DST 135-315 Three-phase synchronous high-torque

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