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Carbon Brush Holders

Spring Type Carbon Brush Holder

Part No. Spring Type Carbon Brush Holder

Spring-type carbon brush holder — spring-loaded box holder applying constant brush pressure on the commutator/slip ring for stable low-spark contact on DC motors, wound-rotor motors and generators. Spring type/force,

Dimensions	brush box opening (W×T), spring travel and mounting geometry not specified (blocked); market-c

Compatible Models

Industrial DC motors (Z4-class and equivalents) DC traction / mill motors (ZQ-series brush gear) AC wound-rotor (YZR / crane-type) motors — collector-ring brush gear Generators and exciter slip-ring systems

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Technical Specifications

Spring Type Carbon Brush Holder — Family Specifications
Specification	Value
Product Type	Spring-type carbon brush holder (spring-loaded)
Spring	Coil / torsion / constant-force per SKU (force per part)
Material	Brass / copper alloy / bronze body + steel/stainless spring (typical) — confirm per SKU
Brush Box Size	Per SKU — confirm (W × T)
Brush Fixing	Slot / screw / quick-change per design
Mounting	Brush rocker / end bracket, insulated
Applications	DC motors; DC traction/mill motors; YZR/crane wound-rotor motors; generators & exciter slip rings
Key Setting	Spring pressure on brush center (too low arcs, too high wears)

* Family-level listing based on brush-holder construction references. Verify spring type/force, box size and mounting per SKU.

Compatible Models

This Spring Type 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

Overview

Spring-type carbon brush holder — the classic spring-loaded brush holder that presses the carbon brush onto the commutator or slip ring under constant spring force, keeping stable, low-spark electrical contact as the brush wears.

Construction

Brush box (holder body — brass/copper alloy/bronze typical)
Spring (coil / torsion / constant-force per design)
Brush fixing (slot / screw / quick-change)
Insulating mounting components

Spring Selection Notes

Spring must press on the brush center to avoid uneven wear
Too low pressure → arcing / intermittent contact
Too high pressure → accelerated brush & commutator wear
Constant-force springs maintain pressure over full brush travel (wind/collector duty)