Lower Unit

Assembly

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Sealed underwater drive motor with support bearings and a shaft seal.

Direct parts	4
Total parts	28
Used in	1 assembly
Class	Assembly

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Sealed underwater drive motor with support bearings and a shaft seal. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Lower Unit parts and their functions

4 top-level parts · 28 parts in total · full bill of materials below

Lower Unit parts diagram: 1 underwater drive motor, 2 ball bearing, 3 oil seal, 4 o-ring set. 28 parts in 4 top-level items. — Lower Unit parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Underwater Drive Motor 4 parts	1×	Submerged brushed DC motor in a sealed housing that turns the propeller shaft.
2	Ball Bearing	2×	Deep-groove radial ball bearing.
3	Oil Seal	1×	Spring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760.
4	O-Ring Set	1×	Set of elastomer rings seated in grooves to seal static or slow-moving joints against fluid and gas, sized to ISO 3601.

3D model

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Build & assembly graph

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Bill of materials for Lower Unit

4 top-level lines · 15 rows shown · 28 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Underwater Drive Motor 4 parts	trolling-motor-drive-motor	1×	1	24	assembly
1.1	Stator Assembly 3 parts	stator-assembly	1×	1	3	assembly
1.1.1	Stator Core (laminations)	stator-core	1×	1	·	part
1.1.2	Copper Winding	copper-winding	1×	1	·	part
1.1.3	Slot Insulation	stator-insulation	1×	1	·	part
1.2	Rotor Assembly 4 parts	rotor-assembly	1×	1	19	assembly
1.2.1	Rotor Shaft	rotor-shaft	1×	1	·	part
1.2.2	Rotor Core	rotor-core	1×	1	·	part
1.2.3	Neodymium Magnet	neodymium-magnet	16×	16	·	part
1.2.4	Ball Bearing	ball-bearing	1×	1	·	part
1.3	Copper Winding	copper-winding	1×	1	·	part
1.4	Motor Housing	motor-housing	1×	1	·	part
2	Ball Bearing	ball-bearing	2×	2	·	part
3	Oil Seal	oil-seal	1×	1	·	part
4	O-Ring Set	oring-set	1×	1	·	part

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Where the lower unit is used

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

Marine 1 Trolling Motor

Used in 1 assembly

Trolling Motor

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 $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks