General Electric 323B7988P07 carbon brush

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Carbon Brushes

General Electric 323B7988P07 carbon brush

Part No. 323B7988P07

OEM-grade replacement commutator brush for General Electric DC motors and generators. Natural-graphite (grade 634) wafer, 1.0" × 1.5" × 4.0" (25.4 × 38.1 × 102 mm), with a 6-1/2" flexible copper shunt; cross-references GE 323B7988P07 and Repco REP2869C.

Material	Grade-634
Dimensions	- Width: 1.00" (25.4 mm) - Thickness: 1.50" (38.1 mm) - Length: 4.00" (102 mm) - Wafer size: 25.4 ×
Application	Replacement commutator brush for General Electric (GE) DC motors and DC/generator machines. Used on commutator (brushed DC) equipment where the original GE brush 323B7988P07 is specified, including GE generator and DC-machine service and generator brush a
Current Density	10 A/cm² (maximum, grade-634 material data)
Hardness	Scleroscope hardness: 20
Grade	634
Connection	Flexible tinned-copper braided shunt, 6-1/2" long, terminated with a spade/fork terminal for screw/bolted connection to

Compatible Models

GE 323B7988P07 (OEM part number) Repco REP2869C (aftermarket cross-reference) Grade-634 commutator machines using a 1.0" × 1.5" × 4.0" graphite brush with a 6-1/2" shunt

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Technical Specifications

Specification	Value
OEM Part Number	GE 323B7988P07
Aftermarket Reference	Repco REP2869C · Grade 634
Product Type	Motor / Generator commutator brush
Material	Natural graphite (Graphite class)
Grade	634 (Morgan/NCC)
Width	1.00" / 25.4 mm
Thickness	1.50" / 38.1 mm
Length	4.00" / 102 mm
Wafer Size	25.4 × 38.1 × 102 mm
Shunt Length	6-1/2" / ≈165 mm
Lead Type	Flexible tinned copper braid, spade/fork terminal
Voltage	Not rated (N/A)
Current Density	10 A/cm² (max, grade 634)
Max Surface Speed	81 m/s (grade 634)
Hardness	20 (Scleroscope)
Density	1.28 g/cm³
Resistivity	18 µΩ·m
Flexural Strength	5.2 MPa
Friction Coefficient	0.29
Contact Drop	2.5 (typical)
Spring	Not included (brush-holder supplied)
Application	GE DC motors & generator commutator machines
Compatible Brand	General Electric

Compatible Models

This General Electric 323B7988P07 carbon brush is designed as a direct replacement for the following machine models and series:

GE 323B7988P07 (OEM part number) Repco REP2869C (aftermarket cross-reference) Grade-634 commutator machines using a 1.0" × 1.5" × 4.0" graphite brush with a 6-1/2" shunt

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Description

This General Electric 323B7988P07 carbon brush is a direct OEM-style replacement for GE commutator machines. The brush body is pressed from natural graphite (grade 634) — a material chosen for stable current transfer, low contact drop, good filming on copper commutators, and even wear over long service life. It shares the same wafer size as GE 323B7987P01 but uses a longer 6-1/2" shunt lead for machines whose brush holders sit further from the terminal.

Features & benefits:

OEM-matched dimensions — 1.0" × 1.5" × 4.0" (25.4 × 38.1 × 102 mm) wafer, drop-in fit for holders sized for GE 323B7988P07.
Grade-634 natural graphite — balanced conductivity, hardness and friction for reliable commutation with minimal arcing and commutator wear.
6-1/2" flexible copper shunt — tinned braided lead with spade terminal, resists fatigue and keeps a stable connection to the brush box.
Cross-referenced part numbers — GE 323B7988P07, Repco REP2869C, grade 634.
Typical applications — GE DC motors, DC generator field and commutator service, generator brush applications.
Quality-inspected before dispatch: dimensional check, lead crimp integrity, and surface condition per batch.