MICA COMMUTATORS
NEMA Compliant Mica Commutators
PRODUCTS > MICA COMMUTATORS
WHAT IS A MICA COMMUTATOR?
Originating in the early electrical engineering era, mica commutators have revolutionized electric motors and generators.
Axim Mica’s AX-COMMUTATOR Muscovite & Phlogopite sheets are hard, dense mica plates employed in segments, separators, and spacers, offering excellent electrical and thermal properties, as well as mechanical strength.
Despite their need for precise installation, mica commutators emerge as the superior choice. They vastly outperform other materials in thermal and electrical insulation, making them essential in today’s high-demand electrical applications.
PROPERTIES & COMPOSITION
SIZE
Width: 1000mm
Length: 600mm or 1200mm
THICKNESS
Range: 0.20mm - 2.0mm
CUSTOMIZATION
Can be sawed, sheared, and punched into custom shapes, with superior uniformity enabling automatic feeding and stacking in high-speed assembly operations.
ELECTRICAL INSULATION
Mica bars electrical shorts dead in their tracks, ensuring smooth motor and generator operations.
HIGH TEMPERATURE RESILIENCE
High operational temperatures? No problem. Mica thrives under heat without breaking a sweat.
TOUGH UNDER PRESSURE
Mica brings surprising toughness to commutators, standing up to the rigorous demands of rotating machines.
REDUCED ELECTRICAL LOSS
Engineered for efficiency, mica commutators cut down on energy dissipation, boosting device performance.
DESIGNED FOR SPEED
High-speed applications meet their match in mica commutators, designed for stability and peak reliability.
TECHNICAL SPECIFICATIONS
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Feature
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Specification
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Material Composition
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High-Grade Muscovite or Phlogopite Mica
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Voltage Tolerance
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Up to 1000V AC/DC
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Thermal Resistance
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-196°C to +1000°C (Depending on Mica Type)
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Dielectric Strength
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20 kV/mm or higher
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Insulation Resistance
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> 10^17 Ohm
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Flexural Strength
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150 - 210 MPa
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Compression Strength
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50 - 200 MPa
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Segment Thickness
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0.1mm - 3mm (Customizable)
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Binder Type
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Silicone, Epoxy, or Shellac
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Standard Sheet Size
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1000mm x 600mm (Custom sizes available)
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Certifications
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ISO 9001:2015, RoHS, REACH, UL
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HOW AX-COMMUTATORS ARE MADE
- Mica Selection: We start with premium-grade mica, known for its exceptional electrical insulation and thermal properties.2. Grinding into Fine Powder: The selected mica is then ground into a fine powder, providing the base material for the commutator.
- Forming Layers: This mica powder is layered, under pressure, with a resin binder to form sheets that will become the commutator segments.
- Cutting and Shaping: These mica-resin sheets are precisely cut and shaped into the commutator segments.
- Assembly: The segments are expertly assembled, with insulating properties between each, onto a shaft, forming the final commutator ready for installation.
ENGINEERING EXCELLENCE WITH AXIM MICA
Ready to move forward? Our engineering team collaborates with clients to develop optimal solutions for their specific applications, ensuring every component meets exact specifications and performance requirements.
FAQs
In commutators, mica serves as an insulating material between the copper segments. Its excellent electrical insulation properties prevent short circuits, ensuring efficient and safe motor operation.
Mica in generators functions as an insulating layer within the commutator and between windings. This protects against electrical leakage, enhances durability, and ensures the generator runs smoothly under high voltage conditions.
Mica is widely utilized in electrical applications for its superior insulation properties. It’s employed in capacitors, high-voltage equipment, and thermal insulators, providing stability and safety across various conditions and temperatures.
Mica separators are used in commutators to electrically insulate each copper segment. This separation is crucial to prevent short circuits and maintain the integrity of the electrical path, ensuring the commutator functions efficiently.