Main Bearing Seal System

Assembly

Deep Groove Ball Bearing.jpg · Commons ↗ Report photo

Direct parts	3
Total parts	10
Used in	1 assembly
Class	Assembly

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Seals on the outer and inner side of the main bearing that keep rock dust and water out of the bearing and gear oil in. Each side has a grease-purged labyrinth outside several rows of lip seals running on a hardened wear ring. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Main Bearing Seal System parts and their functions

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

Main Bearing Seal System parts diagram: 1 main bearing lip seal, 2 seal wear ring, 3 grease labyrinth ring. 10 parts in 3 top-level items. — Main Bearing Seal System 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	Main Bearing Lip Seal	6×	Seal the bearing against dust and keep oil in. Three rows on each side
2	Seal Wear Ring	2×	Hardened running surface for the lip seals. One per side
3	Grease Labyrinth Ring	2×	Grease-filled first barrier against dust. One per side

3D model

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Build & assembly graph

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Bill of materials for Main Bearing Seal System

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

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Main Bearing Lip Seal	main-beam-tbm-lip-seal	6×	6	·	part
2	Seal Wear Ring	main-beam-tbm-seal-wear-ring	2×	2	·	part
3	Grease Labyrinth Ring	main-beam-tbm-labyrinth-ring	2×	2	·	part

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Where the main bearing seal system is used

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

Construction & Earthmoving 1 Main Beam Tunnel Boring Machine

Used in 1 assembly

Cutterhead Support and Main Drive

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–$80. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳ZWZ Bearing zwz.com.cn ↗	Wafangdian, CN	Bearings	2,000 pcs	6–10 wks
🇮🇳NBC Bearings nbcbearings.com ↗	Jaipur, IN	Bearings (NEI)	2,000 pcs	6–10 wks
🇨🇳HRB Bearing hrbbearing.com ↗	Harbin, CN	Bearings	2,000 pcs	6–10 wks
🇮🇳NRB Bearings nrbbearings.com ↗	Mumbai, IN	Needle & auto bearings	2,000 pcs	6–10 wks
🇨🇳LYC Bearing lyc.com.cn ↗	Luoyang, CN	Bearings	2,000 pcs	6–10 wks