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Carbon Brush Holders

Brass Carbon Brush Holder

Part No. Brass Carbon Brush Holder

Brass carbon brush holder — corrosion-resistant, high-conductivity box-type holder for DC motors/generators, slip-ring machines and traction motors (GE 752 / EMD D-class, Siemens, Crompton families). Confirm brush box, stud and spring with supplier before ordering.

Application	- Commutator brush positions on DC motors and generators (motor-repair / rewind service) - Slip-ring brush positions on wound-rotor AC motors and generators - Traction motor brush systems — GE 752-class, EMD D-class locomotive and oilfield-drilling DC mot

Compatible Models

- GE 752-class traction and oilfield-drilling DC motors — box-type brass holder (verify per machine) - EMD D-class locomotive traction motors (D12/D15/D22/D29/D31 stud positions — verify) - Westinghouse DC machines using brass box holders (verify) - Siemens ZKA-type / brass turbine holders (e.g. A9B10350965 brass 64 × 36.5 mm box) — verify per machine - Crompton Parkinson / Crompton Greaves DC motors — 16 × 25 mm brush-box holder family (verify per machine) - Helwig-style stud-mounted brass holders (0.75 × 1.50 1.00 × 1.50 box classes per Helwig stock list — verify) - General DC motors & generators rebuilt with brass brush holders (specify brush box T × W)

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Technical Specifications

Specification	Value
Product Type	Carbon brush holder (box type, stud mounted)
Material	Brass body / copper-alloy brush box; steel-bronze stud (confirm per part)
Brush Box (T x W)	By machine — reference classes: 16 x 25 mm (Crompton); 0.75 x 1.50" & 1.00 x 1.50" (Helwig class); 64 x 36.5 mm (Siemens brass) — TBC per machine
Holder Length	By machine (e.g. 5.0" / 127 mm Crompton class; 6" / 152 mm long-reach class) — TBC
Maximum Current	By machine — e.g. 150 A class (Crompton 16 x 25 mm reference); machine dependent
Stud	Diameter and length per machine (TBC)
Mounting	Brush-holder stud / riser interface (TBC per machine)
Spring	Spring assembly / wear device supplied separately (confirm inclusion)
Connection	Brush lead terminal eye into holder; holder to machine brush ring/stud
Application	DC motors & generators; wound-rotor slip-ring machines; traction motors (GE 752 / EMD D-class); elevator & oilfield-drilling machines
Compatibility	GE 752-class; EMD D-class; Westinghouse; Siemens; Crompton Parkinson / Crompton Greaves (verify per machine)
Voltage	Not rated (N/A)
Current Density	N/A (machine/brush dependent)
Max Surface Speed	N/A (machine dependent)
Hardness	N/A (metal holder)
Grade	N/A (holder)
Lead Type	N/A (lead is part of the brush)

Compatible Models

This Brass Carbon Brush Holder is designed as a direct replacement for the following machine models and series:

Not sure if it fits your machine? Send us your equipment model, motor type or original part number — our engineers will confirm compatibility and advise the correct grade. Ask an engineer →

Description

This is a brass carbon brush holder — a box-type, stud-mounted holder machined from brass with a copper-alloy brush box and steel/bronze stud, used for commutator and slip-ring brush positions on DC motors and generators, wound-rotor AC machines, traction motors (GE 752-class, EMD D-class, oilfield-drilling DC motors) and elevator/industrial machines. Brass construction provides a corrosion-resistant, low-resistance current path and long service life in motor-repair and OEM replacement duty. Reference brush-box classes include 16 × 25 mm (Crompton DC holder family, 150 A class), 0.75 × 1.50 and 1.00 × 1.50 (Helwig-style holders), and 64 × 36.5 mm (Siemens brass turbine holder). The holder provides the brush box, lead slot and terminal interface; the spring and wear device are normally separate items. Because fitment is machine-specific, verify the brush box (T × W), holder length, stud diameter, spring type and mounting against the original holder before ordering.

Features & benefits:

Brass / copper-alloy body — corrosion-resistant, high-conductivity current path
Box-type, stud-mounted design — drop-in for existing brush-holder studs
Lead slot + terminal interface — accepts flexible brush leads with terminal eyes
Wide application range — DC motors/generators, slip-ring machines, traction (GE 752 / EMD D-class), elevator and oilfield motors
Reference box classes — 16 × 25 mm (Crompton 150 A class), 0.75 × 1.50 / 1.00 × 1.50 (Helwig class), 64 × 36.5 mm (Siemens brass)
Quality-checked before dispatch; confirm brush box, length and stud with supplier