Gear Leg (Lower Unit)

Assembly

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Oil-filled bronze pod inside the tunnel that turns the vertical motor drive 90° to the horizontal propeller shaft through spiral bevel gears.

Direct parts	7
Total parts	10
Class	Assembly

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Oil-filled bronze pod inside the tunnel that turns the vertical motor drive 90° to the horizontal propeller shaft through spiral bevel gears. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Gear Leg (Lower Unit) parts and their functions

7 top-level parts · 10 parts in total · full bill of materials below

Gear Leg (Lower Unit) parts diagram: 1 gearbox housing, 2 helical gear pair, 3 vertical drive shaft, 4 propeller shaft, 5 ball bearing, 6 oil seal, 7 o-ring set. 10 parts in 7 top-level items. — Gear Leg (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	Gearbox Housing	1×	Bronze underwater pod
2	Helical Gear Pair	1×	Spiral bevel set, ≈1:1
3	Vertical Drive Shaft	1×	Vertical input shaft
4	Propeller Shaft	1×	Horizontal stainless output shaft carrying the bevel gear and propeller spline.
5	Ball Bearing	3×	Deep-groove radial ball bearing.
6	Oil Seal	2×	Propeller and input shaft seals
7	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 Gear Leg (Lower Unit)

7 top-level lines · 7 rows shown · 10 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Gearbox Housing	gearbox-housing	1×	1	·	part
2	Helical Gear Pair	gear-pair	1×	1	·	part
3	Vertical Drive Shaft	bow-thruster-drive-shaft	1×	1	·	part
4	Propeller Shaft	bow-thruster-prop-shaft	1×	1	·	part
5	Ball Bearing	ball-bearing	3×	3	·	part
6	Oil Seal	oil-seal	2×	2	·	part
7	O-Ring Set	oring-set	1×	1	·	part

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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 $1–$300. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇮🇳Sona Comstar sonacomstar.com ↗	Gurugram, IN	EV driveline & motors	1,000 pcs	8–12 wks
🇨🇳Zhejiang Shuanghuan shdrive.cn ↗	Yuhuan, CN	Gears & driveline	1,000 pcs	8–12 wks
🇮🇳Bharat Gears bharatgears.com ↗	Mumbai, IN	Automotive gears	1,000 pcs	8–12 wks
🇮🇳ZF India zf.com ↗	Pune, IN	Driveline & chassis	1,000 pcs	8–12 wks
🇨🇳Hangzhou Advance advancegroup.cn ↗	Hangzhou, CN	Gearboxes	1,000 pcs	8–12 wks