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Carbon Brush Holders

Power Plants Brush Holders

Part No. Power Plants Brush Holders

Power-plant brush holders engineered for generator exciter and collector-ring brush rigging — constant-force springs, longer brush boxes and adjustable/replaceable designs that outlast standard OEM holders. Stock and custom retrofit options cover GE and Westinghouse generators, synchronous and wound-rotor machines.

Application	Power-plant generator brush rigging — mounting and spring-loading carbon brushes against exciter collector/slip rings of turbo generators (hydro, fossil, nuclear), synchronous and wound-rotor motors, and shaft-grounding brush systems. Also used on GE/West

Compatible Models

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Technical Specifications

Power Plants Brush Holders — Family Specifications
Specification	Value
Product Type	Power-plant brush holder (exciter / collector-ring brush mounting)
Material	Brass / bronze (typical) — confirm per SKU
Mount Options	U-mount (tapered) · turbine-style multiple-slot · single-pocket · bank-of-two · adjustable slip-ring
Spring	Constant-force spring; optional wear indicator; replaceable spring clips
Brush Box	6 standard sizes + custom; longer boxes for turbo-generators
Compatibility	Westinghouse AC generators/exciters; GE exciters (U-mount, single-pocket, toe-to-toe, D12/D22/D32); synchronous & wound-rotor motors; slip-ring / shaft-grounding
Applications	Hydro, fossil, nuclear power generation
Installation	Direct retrofit or custom design per OEM holder drawing

* Family-level listing. Each specific holder SKU must be verified for brush box size, mount type, mounting pattern, ring diameter and spring force before listing.

Compatible Models

This Power Plants Brush Holders is designed as a direct replacement for the following machine models and series:

**Westinghouse AC generators** (turbine-style multiple-slot mounts) **GE exciters** — U-mount (tapered mount) brush holders single-pocket and toe-to-toe holder upgrades **GE D12 / D22 / D32** constant-force brush holder & arm assemblies **Westinghouse exciters** (U-mount designs) Synchronous motors & generators Wound-rotor induction motors Slip-ring / shaft-grounding brush systems Turbo-generator collector-ring rigging — hydro fossil nuclear power generation **Always verify**: brush box size mount type (U-mount / multiple-slot / single-pocket) mounting hole pattern ring diameter and spring force against your OEM holderHelwig Carbon

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

Overview

Brush holders built for power-plant duty: exciter brush rigging on turbo generators (hydro, fossil, nuclear), synchronous and wound-rotor motors, and shaft-grounding systems. Compared with conventional spring-finger holders, these use constant-force springs that keep pressure uniform through the full brush wear cycle — extending brush life, distributing current evenly and eliminating selective action.

Key Features

Constant-force spring — consistent brush-face pressure, no periodic tension adjustment
Longer brush boxes — superior brush stability and longer brush life on high-speed turbo generators
Built-in wear indicator (optional) — red "danger strip" for simple preventive maintenance
Replaceable spring clips & adjustable mounting — lower-cost downtime and flexible retrofit
Mount options: U-mount (tapered), turbine-style multiple-slot, single-pocket, bank-of-two, adjustable slip-ring holders
6 standard brush box sizes plus custom designs

[IMAGE 2 – Detail: constant-force spring, wear indicator and mounting]

Fitment

Westinghouse AC generators and exciters (turbine-style / U-mount)
GE exciters — U-mount, single-pocket and toe-to-toe upgrades; D12/D22/D32 constant-force arm assemblies
Synchronous motors/generators, wound-rotor motors, slip-ring and shaft-grounding systems
Turbo-generator collector rings — hydro, fossil, nuclear
Fitment is per SKU — confirm brush box size, mount type, mounting pattern, ring diameter and spring force against your OEM holder

Maintenance Tips

Verify spring force with a brush-holder digi-scale; replace springs when pressure falls below spec
Use the wear indicator to schedule brush replacement before contact fails
Keep collector rings clean and check for grooving/bluing — brush replacement alone won't fix ring damage
Replace brushes in sets for even current distribution across the bank

Power-plant brush holder family listing. Helwig Carbon, GE and Westinghouse are trademarks of their respective owners; compatibility references are informational.