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Carbon Brushes

25C1872 carbon brush

Part No. 25C1872

25C1872 carbon brush is a high-precision, wear-resistant copper graphite motor brush designed for industrial DC motors, power tools, and engineering machinery. It features stable conductivity, low spark generation, long service life, and strict dimensional consistency, perfectly replacing original standard brushes for smooth motor operation and reduced equipment failure rates.

Material	Electrographite
Dimensions	20mm × 16mm × 32mm (W × D × H), copper shunt lead length: 90mm
Application	OEM replacement carbon brush for General Electric (GE) industrial DC motors, generators, mining equipment, steel mill machinery, marine power systems and heavy rotating equipment
Voltage	DC up to 600V
Current Density	3 – 10 A/cm²
Speed	Up to 3600 RPM
Hardness	Shore 38 – 48
Grade	Electrographite Grade
Connection	Shunt wire bonded connection
Lead Type	Flexible stranded copper shunt lead
Spring	Separate external spring assembly (no built-in spring)

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Technical Specifications

Product Model	25C1872
Material	Electrographite
Dimensions	20mm × 16mm × 32mm, Copper Shunt Lead: 90mm
Application	GE DC motors, generators, mining, steel mill & marine heavy machinery
Working Voltage	DC up to 600V
Current Density	3 – 10 A/cm²
Max Rotation Speed	3600 RPM
Hardness	Shore 38 – 48
Brush Grade	Electrographite Grade
Connection Type	Shunt wire bonded connection
Lead Type	Flexible stranded copper shunt lead
Spring	External separate spring assembly, no integrated spring
Key Features	Low spark, stable commutation, low commutator wear, long service life
Quality Standard	OEM replacement specification

Description

The 25C1872 carbon brush is a professional-grade motor contact component engineered with premium copper graphite composite materials, specially developed for heavy-duty and continuous operation motor equipment. Adopting advanced high-temperature pressing and precision sintering technology, this carbon brush integrates excellent electrical conductivity, mechanical wear resistance and thermal stability, solving common problems of ordinary carbon brushes such as easy wear, unstable current, severe arcing and short service life during long-term high-load operation. Manufactured in strict accordance with industrial OEM standards, the 25C1872 carbon brush boasts precise overall dimensions and smooth contact surfaces, ensuring perfect fitting and close contact with motor commutators. It maintains stable current transmission under high-speed rotation and heavy load conditions, effectively suppressing electric sparks, reducing commutator wear and motor operating noise, and improving the overall operating efficiency and safety of electrical equipment. Widely applicable to various industrial DC motors, professional power tools, engineering machinery motors, generator sets and automated mechanical equipment, the 25C1872 carbon brush is a core wearable replacement part for motor maintenance. It features strong adaptability, durable performance, easy installation and zero modification required, which can effectively extend the service life of motors, reduce equipment maintenance costs and downtime, and is the preferred replacement accessory for industrial motor supporting applications. All 25C1872 carbon brushes undergo strict quality inspection, including conductivity testing, wear resistance testing, high and low temperature resistance testing and dimensional tolerance detection, to ensure consistent product quality and reliable batch stability, meeting long-term continuous industrial production and commercial equipment operation needs.