National 36A164451ABP18 Carbon Motor Brushes

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Carbon Brushes

National 36A164451ABP18 Carbon Motor Brushes

Part No. 36A164451ABP18

National 36A164451ABP18 electrographitic carbon brush (Morgan T563 grade, cross ref REP1052W), dual wafer split OEM replacement brush for GE / National heavy-duty DC motors and generators. Delivers stable commutation, low sparking, uniform protective patina and minimal commutator wear under continuous heavy industrial loads. Precision machined to OEM dimensions, bulk stock available for global industrial maintenance.

Material	Electrographitic, Morgan T563 Grade (2 wafers dual split brush)
Dimensions	Imperial:0.750" (T) × 1.500" (W) × 2.750" (L), Copper shunt lead:4.250" Metric:19.05mm × 38.10mm × 6
Application	National heavy-duty DC motors and industrial generators. Cross reference Repco REP1052W. Widely used in steel rolling mill drives, mining hoist motors, pulp & paper mill main drives and continuous-duty rotating machinery
Voltage	DC up to 750V
Current Density	3 – 9 A/cm²
Speed	Max peripheral speed up to 32 m/s
Hardness	Shore 40 – 50
Grade	Morgan T563 Electrographitic Grade
Connection	Shunt wire bonded connection
Lead Type	Flexible stranded tinned copper shunt lead, bent terminal
Spring	External separate spring assembly (no built-in spring)

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Technical Specifications

Product Model	National 36A164451ABP18
Cross Reference Part	REP1052W, Morgan T563
Material	Electrographitic, Morgan T563 Grade, 2 wafers dual split brush
Imperial Dimensions	0.750" × 1.500" × 2.750", Copper Shunt Lead:4.250"
Metric Dimensions	19.05mm × 38.10mm × 69.85mm, Shunt Lead:107.95mm
Terminal Style	Bent copper terminal
Application	GE / National heavy-duty DC motors, industrial generators, steel mills, mining, pulp & paper mills
Working Voltage	DC up to 750V
Current Density	3 – 9 A/cm²
Max Peripheral Speed	32 m/s
Hardness	Shore 40 – 50
Brush Grade	Morgan T563 Electrographitic Grade
Connection Type	Shunt wire bonded connection
Lead Type	Flexible stranded tinned copper shunt lead, bent terminal
Spring	External separate spring assembly, no integrated spring
Key Features	Dual wafer split design, stable commutation, low sparking, heavy load resistant, long service life
Quality Standard	Matches OEM specification

Description

The National 36A164451ABP18 Carbon Motor Brush is a heavy-duty electrographitic carbon brush, OEM spare part for General Electric large DC motors and generators, cross-referenced as Repco REP1052W with Morgan T563 grade. It adopts dual-wafer split construction, engineered for continuous heavy-cycle industrial operation. Made of premium impregnated electrographitic carbon compound, it maintains stable sliding contact and consistent current transfer under variable heavy loads. It forms a uniform protective patina on commutator surfaces, reducing sparking, friction and commutator abrasion. The bonded flexible tinned stranded copper shunt with bent terminal provides strong mechanical bonding and reliable high-current conduction. Commonly deployed in steel rolling mill drives, mining hoist machinery and pulp & paper mill production systems. Precision machined to original OEM specifications for direct drop-in replacement. Each batch undergoes strict quality inspection for resistivity, hardness and wear performance. Bulk supply and worldwide shipping available for industrial maintenance contractors and heavy industry operators.