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RELIABILITY. PRECISION. EFFICIENCY.

Carbon Brushes

Grey Track is a leading Czech supplier of carbon brushes made from high-quality materials manufactured by Helwig Carbon (USA) and SGL Carbon (Germany) for:

DC commutator machines

  • Motors, generators and auxiliary motors for traction
  • Motors for heavy industry and the energy sector

AC synchronous slip-ring machines

  • Turbogenerators for nuclear power plants
  • Generators for hydroelectric power plants

AC asynchronous slip-ring machines

  • Starting current control and increased starting torque

Grounding systems

  • For railway vehicles
  • Bearing Protection Kit (BPK) shaft grounding solutions

Locomotive Traction

Premium-grade materials for a long service life = reduced maintenance costs Carbon brushes for electric and diesel-electric locomotives and public transit vehicles Certified for use by rail companies in the Czech Republic, Slovakia and Poland Major customers include ČD, ČD Cargo, ZSSK, ZSSK Cargo, PKP Cargo, PKP Intercity

Diesel-Electric Locomotives

  • Approved carbon brushes for diesel-electric locomotives operating in the Czech Republic, Slovakia and Poland
  • US-manufactured material for long-distance diesel-electric locomotives from EMD (Electro-Motive Diesel) and GE (General Electric)

EMD (Elektro-Motive Diesel) and GE (General Electric)carbon brushes of diesel-electric locomotive
CategoryTypeOEM Part #Description
Traction motorD29, D3140025029Export narrow-gauge locomotives
40110740
D43, D43B(TR)40026427The European heavy freight market
40067164
D77, D78, D879322058Revolutionary "Dash-2" line and other versions with shared components
9578681
40047197
D87B(TR), D90(TR), D1009582217Improved and latest evolution of DC traction motor line
40009199
40047198
40076537
GE752 (AF, AG, AH)25C13468P01Robust, high-capacity, and reliable motor with modified and improved variants.
41B535453P6/P9
41B537963P01/P09
VS5917
913881
493X317P06
41B535803P01/P03
GE76184C603599P01Export narrow-gauge locomotives
41A235897P03
41A235897P04/P05
Generator & AlternatorD32-D148330994Main Generators (DC)
9334437
9334439
D328209085
8307806
9334438
8417868
AR10, AR11, AR15, AR178413191Main Alternators (AC)
8329691
AR20-CA740034666
TA1740096504
D14, D188084170Companion Alternators (AC)
8271183
8309867
8309868
8346293
8413190
CA940122623
GE GEN84C603599P01

Electric Locomotives

  • Grey Track carbon brushes are used in 95% of DC traction motors in locomotives operating in passenger and freight transport in the Czech Republic and Slovakia
  • Our carbon brushes are also approved for use by PKP Cargo and PKP Intercity in Poland
  • The exceptional service life of Grey Track carbon brushes dramatically reduces maintenance costs
Locomotive Traction

Industry & Energy

Premium-grade materials for a long service life = reduced maintenance costs Carbon brushes for DC motors in heavy industry Carbon brushes for synchronous and asynchronous electrical machines

Direct Current (DC) Motors

Our carbon brushes deliver excellent performance in the main drive motors of rolling mills in steel mills, where their long service life reduces maintenance costs

Synchronous (AC) Electric Machines

Carbon brushes for turbogenerators in nuclear power plants and generators in hydroelectric and pumped-storage power plants

Asynchronous (AC) Electric Machines

We also manufacture carbon brushes for slip-ring asynchronous machines, primarily high-voltage applications, including starting motors in power plants and motors used in cement plants and ceramics manufacturing facilities.

Industry & Energy

Grounding Systems

A wide range of metal-graphite materials for railway vehicle grounding brushes Effective grounding of electric machine shafts to protect bearings

Rail Vehicle Grounding Systems

Grounding brushes for the FROST system, supplied as original replacement parts

Bearing Protection Kit (BPK)™ Shaft Grounding

The most effective, longest lasting way to divert VFD-induced electrical currents away from the bearings

Grounding Systems

Charging Contacts

Charging contacts suitable for charging battery-powered applications, such as forklifts We design charging contacts based on your specific requirements, including the production of a prototype for testing purposes

Charging Contacts

Applications

  • DC electric machines
  • Synchronous electric machines
  • Asynchronous (slip-ring) electric machines
  • Grounding systems
  • Charging contacts

Industries

  • Electric locomotives
  • Diesel locomotives
  • Industry
  • Energy

Request a Quote

We respond within 24 hours · Manufacturing based on your drawing or sample

PROOF OF OUR CAPABILITIES

CERTIFICATE OF COMPETENCE

ZSSK Cargo

Manufacture and supply of spare parts for ZSSK CARGO railway traction vehicles

Registration No. 350

SUPPLIER APPROVAL

PKP Intercity S.A.

Brushes & brush holders Group V (Wagons) + Group VI (Locomotives)

No. U-113-2024

ISO CERTIFICATION

Quality Management System

No. 42017047

Download Certificate