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Discussion History

Universal Motor Assembly

Assembly

Series-wound AC universal motor, ~250-350 W. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Universal Motor Assembly parts and their functions

12 top-level parts · 35 parts in total · full bill of materials below
Universal Motor Assembly parts diagram: 1 stator assembly, 2 rotor assembly, 3 armature shaft, 4 armature pinion, 5 commutator, 6 carbon brush, 7 brush holder, 8 cooling fan, 9 ball bearing, 10 motor mount, 11 thermal cutoff, 12 suppression capacitor. 35 parts in 12 top-level items.
Universal Motor Assembly parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Stator Assembly 3 parts 1× Field coils on laminated core
2 Rotor Assembly 4 parts 1× Wound armature
3 Armature Shaft 1× Hardened steel shaft carrying the rotor stack.
4 Armature Pinion 1× Cut on armature shaft
5 Commutator 1× Segmented copper ring switching armature current.
6 Carbon Brush 2× Spring-loaded graphite brush riding the commutator.
7 Brush Holder 2× Insulated guide and spring for one carbon brush.
8 Cooling Fan 1× Plastic centrifugal fan on the armature shaft.
9 Ball Bearing 2× Deep-groove radial ball bearing.
10 Motor Mount 1× Molded bracket locating the motor in the upper shell.
11 Thermal Cutoff 1× One-shot fuse opening if the windings overheat.
12 Suppression Capacitor 1× X2 capacitor damping brush arc EMI.

3D model

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Build & assembly graph

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Bill of materials for Universal Motor Assembly

12 top-level lines · 19 rows shown · 35 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Stator Assembly 3 parts stator-assembly 1× 1 3 assembly
1.1 Stator Core (laminations) stator-core 1× 1 · part
1.2 Copper Winding copper-winding 1× 1 · part
1.3 Slot Insulation stator-insulation 1× 1 · part
2 Rotor Assembly 4 parts rotor-assembly 1× 1 19 assembly
2.1 Rotor Shaft rotor-shaft 1× 1 · part
2.2 Rotor Core rotor-core 1× 1 · part
2.3 Neodymium Magnet neodymium-magnet 16× 16 · part
2.4 Ball Bearing ball-bearing 1× 1 · part
3 Armature Shaft hand-mixer-armature-shaft 1× 1 · part
4 Armature Pinion hand-mixer-armature-pinion 1× 1 · part
5 Commutator hand-mixer-commutator 1× 1 · part
6 Carbon Brush hand-mixer-carbon-brush 2× 2 · part
7 Brush Holder hand-mixer-brush-holder 2× 2 · part
8 Cooling Fan hand-mixer-cooling-fan 1× 1 · part
9 Ball Bearing ball-bearing 2× 2 · part
10 Motor Mount hand-mixer-motor-mount 1× 1 · part
11 Thermal Cutoff hand-mixer-thermal-cutoff 1× 1 · part
12 Suppression Capacitor hand-mixer-suppression-cap 1× 1 · part

Where the universal motor assembly is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Used in 1 assembly

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $2–$500. How estimates work
VendorHQSpecialtyMOQLead time
🇨🇳Inovance
inovance.com ↗
Shenzhen, CN Drives & motion control 500 units 10–14 wks
🇮🇳Sona Comstar
sonacomstar.com ↗
Gurugram, IN EV driveline & motors 500 units 10–14 wks
🇨🇳Broad-Ocean
broad-ocean.com ↗
Zhongshan, CN Electric motors 500 units 10–14 wks
nidec.com ↗ Singapore Motors, regional ops 500 units 10–14 wks
🇮🇳Bosch India
bosch.in ↗
Bengaluru, IN Automotive components 500 units 10–14 wks