Brush Holders

Brush holders may be divided into two broad classes; one in which the brush is rigidly attached to a swivel arm, and the other one in which the brush is free to slide through the supporting box.

 

 

ANGLE AT WHICH BRUSH MEETS COLLECTOR

Care should be taken to set the brush holders at the angle for which they are designed.

There are different types of spring arrangements

  • Spring pressure
  • Constant force springs

 

HATIM CARBON BRUSH HOLDERS ADVANTAGES

To guarantee the optimum efficiency of a DC/AC motor you need to maximize the performance of the carbon brush on the commutator/slip ring. The ability of the brush to perform effectively depends upon the design and quality of the brush holder.

At Hatim carbon, precise engineering, quality craftsman and state of the art equipment have enabled us to supply only the finest brush holders.

The most important factors in the functioning of brush holders are:

  1. Maximum stability of the carbon in the holder.
  2. Proper positioning of the brush on the contact surface.
  3. Minimum resistance through the brush and holder portion of the electrical circuit.

 

TYPES OF BRUSH HOLDER

SINGLE LEG BRUSH HOLDER

Designed for use with both fast moving slip rings i.e. Alternators and slow moving high current density applications such as leisure rides and cable reeling drums. Single Leg brush holders are therefore very adaptable and thus are of various applications.

DOUBLE LEG OR CALIPER BRUSH HOLDER

Designed for use with both fast moving slip rings i.e. Alternators and slow moving high current density applications such as leisure rides and cable reeling drums. Similar to the Single Leg brush holders, these units are also very adaptable and lend themselves with too many varied applications.

COMMUTATOR TYPE

Two or more brushes made of carbon press against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings on the armature are connected to the commutator segments. We make brushes that are compatible with such designs and avoids wear. Brush impregnations and treatments can also be done to protect the slip ring surface from contaminated environments.

SLIP RING TYPE

A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. The electrical connection to the rotor is made by connections to the brushes. We also make brushes with inserts for cleaning action to minimize the slip ring wear.