For all types of
electrical rotating machines.
The brush holders are
made from brass, gun-metal, phosphor bronze and other alloy
castings as per the requirements. Sheet metal holders are also made
to substitute castings where ever possible and permissible. The
holders and brush cavities are machined to close tolerances and to a
fine finish for smooth and trouble free travel of the brush. The
spring pressure is calibrated and tested accordingly to the
prescribed table for particular grade and cross sectional area of
the brush and care is taken to provide centrally uniform spring
pressure. All hardware is suitably plated and holders are checked at
every stage of manufacture for strict quality control.