Cleveland Mica Puts Innovation Into The Manufacture Of Mica Components
Phone: (216) 226-1360 Fax: (216) 226-1361
Mica Tubing

MICA TUBES

We manufacture high temperature mica and mica and fiberglass tubing in square, round, oval or rectangular shapes. They are made without paper starters or finishers and are fully cured to eliminate smoke.

Brown Mica Washers

MICA Washers

Mica washers are an economical alternative to phenolic custom fabricated parts. We have a wide range of dies for short or long runs. They make excellent insulators and spacers for power grid resistors, inverters and communication equipment.

Mica Bushing

Mica Spacers

Mica spacers are an economical alternative to phenolic custom fabricated parts. We have a wide range of dies for short or long runs. They make excellent insulators for power grid resistors, inverters and communication equipment.

Dark Mica Electric Insulation

Electric Insulation

Natural mica is the best insulator per unit of thickness. Electronic uses include: semiconductor and transistor insulators, parts for audio equipment, military communications, computers and car ignitions.

Mica Commutator Insulating Rings

Commutator Insulating Rings

A commutator consists of a set of segments, fixed around the part of the circumference of the rotating machine, or the rotor, and a set of spring-loaded brushes fixed to the stationary frame of the machine. MICA Is used to Insulate the rings from extreme heat

Mica Tubes 2

MICA Bushings

Mica bushings are integral to commutators and shaft insulation used in generators, alternators and cartridge heaters. The bushings are convolute wound and tested to guarantee concentricity. Our compositions meet or exceed NEMA specifications.

Molding/Flexible Plate

Our molding plate allows for easy forming into commutator rings, tubes, channels, angles and end caps.

Mica Heater Plate

Segments/Heater Plates

Fully cured segment plate is available in mica paper or mica flake construction. The spring like compressibility maintains the commutator’s stability under centrifugal force during operation.

MICA TUBING

Offering a complete line of insulating MICA tubing. MICA is a versatile insulator known for its high dielectric rating and customizable qualities. Because of this, MICA products are used in a wide variety of industrial and consumer products. MICA Tubing is readily available in custom sizes unlike glass polyester tubing.

SPECIFICATIONS

Types

High temperature MICA tubing that comes in square, round, oval or rectangular shapes. Temperature rating from 500 to 550 C. Non brittle construction unlike ceramic which cracks with vibration.

Sizes

Diameters range from 0.2” to 36” with a uniform thickness from 0.010”. Standard length for round tubing is 36” and square tubing is 25”.

Grade

Our tubes meet NEMA standards and are convolute wound to increase strength and minimize seam lengths. Some examples are below on what NEMA grade we manufacture:

  • 101P
    1. 100% MICA paper bonded with epoxy or Alkyd Vinyl.
  • 101P Silicone
    1. Fully Cured high temperature silicone bonded MICA paper
  • 103
    1. 80% MICA wrapped with electrical grade insulating paper bonded with epoxy or alkyd vinyl.

MICA WASHERS

Mica Washers

Mica washers are an economical alternative to phenolic custom fabricated parts. They can be stamped out of a sheets of MICA in a variety of sizes and specs which gives customers the maximum flexibility to find the part that best fits their application.

SPECIFICATIONS

Types

High temperature MICA tubing that comes in square, round, oval or rectangular shapes.

Sizes

Diameters range from 0.2” to 36” with a uniform thickness from 0.010”. Standard length for round tubing is 36” and square tubing is 25”.

Grade

Our washers meet NEMA standards and are convolute wound to increase strength and minimize seam lengths. Some examples are below on what NEMA grade we manufacture:

  • 101P
    1. 100% MICA paper bonded with epoxy or Alkyd Vinyl.
  • 101P Silicone
    1. Fully Cured high temperature silicone bonded MICA paper
  • 103
    1. 80% MICA wrapped with electrical grade insulating paper bonded with epoxy or alkyd vinyl.

MICA SPACERS

Mica Bushing

Mica spacers are an economical alternative to phenolic custom fabricated parts. They can be stamped out of a sheets of MICA in a variety of sizes and specs which gives customers the maximum flexibility to find the part that best fits their application.

SPECIFICATIONS

Types

High temperature MICA tubing that comes in square, round, oval or rectangular shapes.

Sizes

Wall thickness from 0.010” to 1′

Grade

Our spacers meet NEMA standards and are convolute wound to increase strength and minimize seam lengths. Some examples are below on what NEMA grade we manufacture:

  • 101P
    1. 100% MICA paper bonded with epoxy or Alkyd Vinyl.
  • 101P Silicone
    1. Fully Cured high temperature silicone bonded MICA paper
  • 103
    1. 80% MICA wrapped with electrical grade insulating paper bonded with epoxy or alkyd vinyl.

ELECTRICAL INSULATION

Natural mica is the best insulator per unit of thickness. MICA holds up to the heat better on electrical circuits such as transistors, semiconductors and other electrical components.

USES

COMMUTATOR INSULATION RINGS

A basic commutator is a moving part in a rotary electric switch or generator. At Cleveland Mica we make the rings out of mica even the difficult ones. MICA is a better insulator because it holds the heat better than ceramic.

SPECIFICATIONS

Types

Rings are available in S, V and Z configurations. Fractional horsepower up to 11” sizes are made in one piece. Tight angles, and large sectional rings are available to your dimensional specifications and systems.

Sizes

Diameters in one-piece construction range from 0.25” to 12” and up to 48” in sectional rings.

MICA BUSHINGS

Mica bushings are integral to commutators and shaft insulation used in generators, alternators and cartridge heaters. The bushings are convolute wound and tested to guarantee concentricity. Our compositions meet or exceed NEMA specifications.

MOLDING FLEXIBLE PLATE

Our molding plate allows for easy forming into commutator rings, tubes, channels, angles and end caps.Shellac, epoxy or alkyd vinyl resin bonded flexible plate adds durability and longevity to the field operation of electrical equipment. All are available certified to NEMA and military specifications.

SPECIFICATIONS

Our Mold Plate

Our mold plate is ‘B’ staged so that you can heat and form at your company location. Flexible mica can be wrapped around tight corners and radii.

SEGMENTS HEATER PLATES

Fully cured segment plate is available in mica paper or mica flake construction. The spring like compressibility maintains the commutator’s stability under centrifugal force during operation.While primarily used as commutator insulation to separate and hold copper segments in place, the product is also used to punch washers, rectangles and other parts due to its uniform and close tolerance thickness.

SPECIFICATIONS

Types

Segment mica is available in muscovite or phlogopite and with three types of binder – shellac, epoxy or alkyd vinyl.  Segment Mica is rigid and extremely hard. This type is used for commutator segments and superior insulating washers, gaskets and seals.

Sizes

Standard Sheet is 36” x 36”

Grade

Our sheets have a NEMA grade of 323 meaning MICA between 2-mil polyester films