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Carbon Brushes

254A8778P01 carbon brush

Part No. 254A8778P01

Premium 254A8778P01 graphite carbon brush, OEM replacement brush designed for General Electric heavy-duty DC motors and generators. Low friction, stable sliding contact, minimal sparking, long service life for industrial traction and mining equipment. Strict OEM specification, bulk supply available.

Material	Graphite
Dimensions	3/4" (W) × 1 1/4" (T) × 2 3/4" (L), Shunt lead length: 4" \| Metric: 19.05mm × 31.75mm × 69.85mm, lea
Application	OEM replacement carbon brush for General Electric (GE) DC motors, industrial traction motors, heavy-duty generators, mining equipment, large industrial rotating machinery
Voltage	DC up to 600V
Current Density	3 – 8 A/cm²
Speed	Up to 3000 RPM
Hardness	Shore 40 – 50
Grade	Pure Graphite Grade
Connection	Shunt wire bonded connection
Lead Type	Flexible copper shunt lead
Spring	Customer fitted / No integrated spring

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Technical Specifications

Product Model	254A8778P01
Material	Graphite
Dimensions	3/4" × 1 1/4" × 2 3/4", Copper Shunt Lead: 4"
Metric Dimensions	19.05mm × 31.75mm × 69.85mm, Lead 101.6mm
Application	GE DC motors, traction motors, heavy-duty generators, mining machinery
Working Voltage	DC up to 600V
Current Density	3 – 8 A/cm²
Max Rotation Speed	3000 RPM
Hardness	Shore 40 – 50
Brush Grade	Pure Graphite Grade
Connection Type	Shunt wire bonded connection
Lead Type	Flexible copper shunt lead
Spring	Not integrated, separate spring assembly
Key Features	Low friction, low spark, long wear life, OEM replacement
Quality Standard	Matches OEM specification

Description

The 254A8778P01 carbon brush is an OEM graphite brush engineered for General Electric large DC motors and heavy industrial generators. Manufactured from high-purity graphite material, it delivers low friction coefficient, excellent commutation performance and low spark generation under continuous heavy load. The 4-inch flexible copper shunt provides reliable current transmission and strong bonding to the carbon block. This carbon brush is widely used on GE traction motors, mining machinery and industrial power generation equipment. Each unit is precision machined to match OEM dimensions, ensuring perfect fit and easy replacement. We provide high quality replacement brushes with strict quality inspection and worldwide bulk shipping for industrial maintenance customers.