Main Rotor System
AssemblyArticulated four-blade main rotor driving lift and cyclic/collective control. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Main Rotor System parts and their functions
12 top-level parts · 181 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Rotor Head / Hub 6 parts | 1× | hub |
| 2 | Rotor Mast | 1× | Splined drive shaft transmitting torque from the gearbox to the hub. |
| 3 | Swashplate Assembly 3 parts | 1× | Rotating/non-rotating plate pair converting control inputs to blade pitch. |
| 4 | Pitch Link | 4× | one per blade |
| 5 | Main Rotor Blade 3 parts | 4× | Composite main rotor blade with spar, skin and tip cap. |
| 6 | Blade Attachment Bolt | 8× | Precision bolt and bushing retaining a rotor blade in its grip. |
| 7 | Elastomeric Bearing | 4× | Laminated rubber and steel bearing allowing blade flap, lead-lag and feathering. |
| 8 | Droop Stop | 4× | Stop limiting blade droop at rest and low rotor speed. |
| 9 | Rotor Brake | 1× | Disc brake on the transmission stopping the rotor after shutdown. |
| 10 | Mast Bearing | 2× | Large bearing supporting the rotor mast in the transmission housing. |
| 11 | Hex Bolt | 60× | Flanged hex bolt, M8 to M24, used throughout the structure, covers and equipment mounts. |
| 12 | Hex Nut | 60× | Flanged or nyloc hex nut mating the bolts. |
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Bill of materials for Main Rotor System
12 top-level lines · 24 rows shown · 181 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Rotor Head / Hub 6 parts | helicopter-rotor-head | 1× | 1 | 22 | assembly |
| 1.1 | Hub Body (Titanium Forging) | helicopter-hub-body | 1× | 1 | · | part |
| 1.2 | Flap Hinge | helicopter-flap-hinge | 4× | 4 | · | part |
| 1.3 | Lead-Lag Hinge | helicopter-lead-lag-hinge | 4× | 4 | · | part |
| 1.4 | Lead-Lag Damper | helicopter-lead-lag-damper | 4× | 4 | · | part |
| 1.5 | Ball Bearing | ball-bearing | 8× | 8 | · | part |
| 1.6 | Fastener Set | fastener-set | 1× | 1 | · | part |
| 2 | Rotor Mast | helicopter-rotor-mast | 1× | 1 | · | part |
| 3 | Swashplate Assembly 3 parts | helicopter-swashplate | 1× | 1 | 3 | assembly |
| 3.1 | Swashplate Plate Pair | helicopter-swashplate-plate | 1× | 1 | · | part |
| 3.2 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 3.3 | Oil Seal | oil-seal | 1× | 1 | · | part |
| 4 | Pitch Link | helicopter-pitch-link | 4× | 4 | · | part |
| 5 | Main Rotor Blade 3 parts | helicopter-main-blade | 4× | 4 | 3 | assembly |
| 5.1 | Blade Spar | helicopter-blade-spar | 1× | 4 | · | part |
| 5.2 | Blade Skin / Aerofoil | helicopter-blade-skin | 1× | 4 | · | part |
| 5.3 | Fastener Set | fastener-set | 1× | 4 | · | part |
| 6 | Blade Attachment Bolt | helicopter-blade-bolt | 8× | 8 | · | part |
| 7 | Elastomeric Bearing | helicopter-elastomeric-bearing | 4× | 4 | · | part |
| 8 | Droop Stop | helicopter-droop-stop | 4× | 4 | · | part |
| 9 | Rotor Brake | helicopter-rotor-brake | 1× | 1 | · | part |
| 10 | Mast Bearing | helicopter-mast-bearing | 2× | 2 | · | part |
| 11 | Hex Bolt | helicopter-hex-bolt | 60× | 60 | · | part |
| 12 | Hex Nut | helicopter-hex-nut | 60× | 60 | · | part |
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Where the main rotor system is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed 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| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
|
🇨🇳Inovance
inovance.com ↗
|
Shenzhen, CN | Drives & motion control | 500 units | 10–14 wks |
| sonacomstar.com ↗ | Gurugram, IN | EV driveline & motors | 500 units | 10–14 wks |
| broad-ocean.com ↗ | Zhongshan, CN | Electric motors | 500 units | 10–14 wks |
| nidec.com ↗ | Singapore | Motors, regional ops | 500 units | 10–14 wks |
| bosch.in ↗ | Bengaluru, IN | Automotive components | 500 units | 10–14 wks |