Motors

Motors

Contributors in Motors

Motors

1. When used on a motor nameplate, a number which indicates how much above the nameplate rating a motor can be loaded without causing serious degradation, (i.e., a 1.15 S-F can produce 15% greater ...

reversing

Electrical equipment; Motors

Unless otherwise specified, a general-purpose DC motor is reversible. A DC motor can be reversed by changing the polarity of the field or the armature, but not both. When rapid reversing is ...

roller bearing

Electrical equipment; Motors

A special bearing system with cylindrical rollers capable of handling belted applications, too large for standard ball bearings.

rotating magnetic field

Electrical equipment; Motors

The force created by the stator once power is applied to it that causes the rotor to turn.

skew

Electrical equipment; Motors

Arrangement of laminations on a rotor or armature to provide a slight angular pattern of their slots with respect to the shaft axis. This pattern helps to eliminate low speed cogging effects in an ...

sleeve bearings

Electrical equipment; Motors

A type of bearing with no rolling elements, where the motor shaft rides on a film of oil.

slip

Electrical equipment; Motors

The difference between the speed of the rotating magnetic field (which is always synchronous) and the rotor in a non-synchronous induction motor is known as slip and is expressed as a percentage of a ...