General Purpose Motors

MBM Carbon Brush (lot of 11)

Price
$49.99

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SKU Condition Availability
D-3-6-362 Used, inspected 1 in stock
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Overview

This lot of 11 HELWIG carbon brushes provides industrial-grade brush replacement parts for DC motors, generators, and slip-ring motor applications. HELWIG carbon brush components are precision-manufactured to conduct electricity between stationary and rotating parts while maximizing brush and commutator surface life. Manufactured by HELWIG Carbon Products—a trusted supplier since 1928—these brushes are suitable for maintenance, repair, and OEM replacement across a range of industrial duty cycles.

Key Features

  • Manufacturer Heritage: HELWIG Carbon Products, established 1928, serves as the American industry leader in brush replacement for generators, motors, and slip-ring applications.
  • Enhanced Surface Contact: Designed to increase brush life and electrical contact quality, reducing premature wear and maintaining commutator performance.
  • Multiple Application Support: Suitable for DC motors, generators, slip-ring motors, and grounding applications across general and heavy industrial environments.
  • Quantity Advantage: Lot of 11 brushes provides inventory for multiple motor repairs or preventive maintenance scheduling.
  • Industrial Specifications: Meets standard brush specification requirements for voltage drop, friction coefficient, and current density performance.

Technical Specifications

  • Manufacturer: HELWIG Carbon Products, Inc.
  • Product Type: Carbon Graphite / Electrographite Brush Set
  • Quantity per Lot: 11 brushes
  • Application Categories: DC Motors, Generators, Slip-Ring Motors, Grounding
  • Common Operating Environments: Elevators, industrial machinery, paper mills, railroad equipment, general heavy industrial
  • Brush Grades Available: Carbon Graphite (low speed/low current) or Electrographite (high voltage/high speed)
  • Spring Configuration: Includes spring assemblies for proper brush pressure retention
  • Condition: Used, inspected
  • Shunt Connection: Wire or riveted attachment (varies by brush style)
  • Certifications: Manufacturer-standard quality per Helwig specification guides

Typical Applications

HELWIG carbon brushes are used across diverse industrial sectors:

  • General Industrial Motors: Replacement brushes for standard DC motors in manufacturing facilities.
  • Slip-Ring Motors: Precision electrical contact for wound-rotor motors and slip-ring assemblies.
  • Generators: Reliable brush sets for AC and DC generator applications, including wind turbine generators.
  • Elevator Systems: Durable brushes rated for continuous-duty elevator motor and hoist applications.
  • Heavy Equipment: Railroad locomotives, paper mill drives, and other heavy-duty industrial rotating machinery.
  • Grounding Applications: Used in bearing protection and shaft grounding circuits to reduce EDM damage.

Compatibility & Replacements

Compatible With

  • DC Motors (industrial and general-purpose)
  • AC Generators and slip-ring generators
  • Wound-rotor induction motors (slip-ring motors)
  • Brush holders with standard spring-loaded assemblies
  • Commutator-based rotating machinery
  • Bearing protection circuits and shaft grounding systems

Replaces / Drop-In Replacement For

Verify compatibility with your system integrator before ordering. The specific brush style (single wafer, multi-wafer, Red Top configuration, soldered cap, or riveted attachment) must match your motor’s brush holder geometry and electrical requirements. Contact HELWIG Carbon directly at 800-962-4851 or submit a sample or sketch for exact replacement confirmation.

Works With

  • Standard industrial brush holders and spring assemblies
  • Helwig constant-force springs and brush hardware
  • Helwig Red Top insulators (optional upgrade for vibration absorption)
  • HELWIG Bearing Protection Kit (BPK) systems for shaft voltage management
  • OEM motor and generator repair workflows
Manufacturer

HELWIG Carbon Products, Inc.

Product Type

Carbon Graphite / Electrographite Brush Set

Quantity per Lot

11 brushes

Common Applications

DC Motors, Generators, Slip-Ring Motors, Grounding

Operating Environments

Elevators, industrial machinery, paper mills, railroad equipment, heavy industrial

Brush Grades

Carbon Graphite (low speed) or Electrographite (high voltage/high speed)

Spring Configuration

Standard spring assemblies included

Shunt Connection

Wire or riveted (varies by brush style)

Condition

Used, inspected

Contact Voltage Drop

0.7 V to 2.5+ V (varies by grade)

Coefficient of Friction

0.1 to 0.3+ (varies by grade)

Typical Spring Pressure

3.5 to 6.0 PSI (240-420 g/cm²)

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