Main Transmission
AssemblyMain gearbox combining engine inputs and driving the rotor. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Main Transmission parts and their functions
5 top-level parts · 42 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Main Gearbox 6 parts | 1× | Multi-stage reduction gearbox, roughly 90:1. |
| 2 | Rotor Mast | 1× | |
| 3 | Freewheel Clutch | 2× | One-way clutch allowing autorotation. |
| 4 | Rotor Brake | 1× | |
| 5 | Gearbox Oil Cooler | 1× |
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Bill of materials for Main Transmission
5 top-level lines · 16 rows shown · 42 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Main Gearbox 6 parts | heavy-lift-helicopter-main-gearbox | 1× | 1 | 37 | assembly |
| 1.1 | Helical Gear Pair | gear-pair | 4× | 4 | · | part |
| 1.2 | Planetary Reduction Stage 5 parts | heavy-lift-helicopter-planetary-stage | 1× | 1 | 13 | assembly |
| 1.2.1 | Sun Gear | heavy-lift-helicopter-sun-gear | 1× | 1 | · | part |
| 1.2.2 | Planet Gear | heavy-lift-helicopter-planet-gear | 5× | 5 | · | part |
| 1.2.3 | Ring Gear | heavy-lift-helicopter-ring-gear | 1× | 1 | · | part |
| 1.2.4 | Planet Carrier | heavy-lift-helicopter-planet-carrier | 1× | 1 | · | part |
| 1.2.5 | Ball Bearing | ball-bearing | 5× | 5 | · | part |
| 1.3 | Gearbox Housing | gearbox-housing | 1× | 1 | · | part |
| 1.4 | Ball Bearing | ball-bearing | 12× | 12 | · | part |
| 1.5 | Oil Seal | oil-seal | 6× | 6 | · | part |
| 1.6 | Gear Oil | gear-oil | 1× | 1 | · | part |
| 2 | Rotor Mast | heavy-lift-helicopter-rotor-mast | 1× | 1 | · | part |
| 3 | Freewheel Clutch | heavy-lift-helicopter-freewheel-unit | 2× | 2 | · | part |
| 4 | Rotor Brake | heavy-lift-helicopter-rotor-brake | 1× | 1 | · | part |
| 5 | Gearbox Oil Cooler | heavy-lift-helicopter-gearbox-oil-cooler | 1× | 1 | · | part |
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Where the main transmission 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 $1–$300. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| sonacomstar.com ↗ | Gurugram, IN | EV driveline & motors | 1,000 pcs | 8–12 wks |
| shdrive.cn ↗ | Yuhuan, CN | Gears & driveline | 1,000 pcs | 8–12 wks |
| 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 |
| advancegroup.cn ↗ | Hangzhou, CN | Gearboxes | 1,000 pcs | 8–12 wks |