Large Turbofan Engine
AssemblyA ~70,000–80,000 lbf-class turbofan; a single large turbofan contains roughly 25,000 parts. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Large Turbofan Engine parts and their functions
13 top-level parts · 20,658 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Fan Module 4 parts | 1× | Wide-chord fan with containment case. |
| 2 | Compressor Module 3 parts | 1× | Multi-stage LP/HP compressor spools. |
| 3 | Combustor 3 parts | 1× | Annular combustor with fuel nozzles. |
| 4 | Turbine Module 3 parts | 1× | HP and multi-stage LP turbines. |
| 5 | Accessory Gearbox 4 parts | 1× | Tower-shaft-driven gearbox spinning the engine pumps, generator and starter. |
| 6 | FADEC Channel 4 parts | 2× | Dual-channel engine control |
| 7 | Fuel Metering Unit 4 parts | 1× | Hydromechanical unit metering fuel flow to the combustor nozzles. |
| 8 | Oil System 4 parts | 1× | Lubrication and scavenge circuit with tank, pumps and cooler. |
| 9 | Engine Harness 3 parts | 6× | Sensor and control looms |
| 10 | Stator Vane Row 1 parts | 6× | Stator vane rows |
| 11 | Air Seal | 80× | Labyrinth and brush seals |
| 12 | Fastener Set | 18000× | Bolts, nuts and clips of one turbofan |
| 13 | Nacelle & Thrust Reverser | 1× | Inlet, cowls and translating-sleeve thrust reverser. |
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Bill of materials for Large Turbofan Engine
13 top-level lines · 47 rows shown · 20,658 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Fan Module 4 parts | wba-fan-module | 1× | 1 | 30 | assembly |
| 1.1 | Fan Blade | wba-fan-blade | 24× | 24 | · | part |
| 1.2 | Fan Disc | wba-fan-disc | 1× | 1 | · | part |
| 1.3 | Fan Containment Case | wba-fan-case | 1× | 1 | · | part |
| 1.4 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 2 | Compressor Module 3 parts | wba-compressor-module | 1× | 1 | 22 | assembly |
| 2.1 | Compressor Stage | wba-blisk-stage | 14× | 14 | · | part |
| 2.2 | Engine Shaft | wba-engine-shaft | 2× | 2 | · | part |
| 2.3 | Ball Bearing | ball-bearing | 6× | 6 | · | part |
| 3 | Combustor 3 parts | wba-combustor-module | 1× | 1 | 25 | assembly |
| 3.1 | Combustor Liner | wba-combustor-liner | 1× | 1 | · | part |
| 3.2 | Fuel Nozzle | wba-fuel-nozzle | 22× | 22 | · | part |
| 3.3 | Igniter | wba-igniter | 2× | 2 | · | part |
| 4 | Turbine Module 3 parts | wba-turbine-module | 1× | 1 | 655 | assembly |
| 4.1 | Turbine Disc | wba-turbine-stage | 7× | 7 | · | part |
| 4.2 | Turbine Blade Row 1 parts | wba-turbine-blade-set | 7× | 7 | 92 | assembly |
| 4.2.1 | Turbine Blade | wba-turbine-blade | 92× | 644 | · | part |
| 4.3 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 5 | Accessory Gearbox 4 parts | wba-engine-accessory-gearbox | 1× | 1 | 35 | assembly |
| 5.1 | Gearbox Gear | wba-engine-gear | 14× | 14 | · | part |
| 5.2 | Ball Bearing | ball-bearing | 12× | 12 | · | part |
| 5.3 | O-Ring Set | oring-set | 8× | 8 | · | part |
| 5.4 | Tower Shaft | wba-engine-tower-shaft | 1× | 1 | · | part |
| 6 | FADEC Channel 4 parts | wba-engine-fadec | 2× | 2 | 618 | assembly |
| 6.1 | Bare PCB | pcb-bare | 4× | 8 | · | part |
| 6.2 | Microcontroller | mcu | 2× | 4 | · | part |
| 6.3 | Connector | connector | 12× | 24 | · | part |
| 6.4 | SMD Passive (R/C/L) | smd-passives | 600× | 1,200 | · | part |
| 7 | Fuel Metering Unit 4 parts | wba-engine-fuel-unit | 1× | 1 | 18 | assembly |
| 7.1 | Fuel Metering Valve | wba-fuel-metering-valve | 3× | 3 | · | part |
| 7.2 | Fuel Pump | wba-fuel-pump-unit | 1× | 1 | · | part |
| 7.3 | Pressure Sensor | pressure-sensor | 4× | 4 | · | part |
| 7.4 | O-Ring Set | oring-set | 10× | 10 | · | part |
| 8 | Oil System 4 parts | wba-engine-oil-system | 1× | 1 | 10 | assembly |
| 8.1 | Oil Pump | wba-oil-pump | 4× | 4 | · | part |
| 8.2 | Oil Cooler | wba-oil-cooler | 1× | 1 | · | part |
| 8.3 | Oil Filter | wba-oil-filter | 2× | 2 | · | part |
| 8.4 | Pressure Sensor | pressure-sensor | 3× | 3 | · | part |
| 9 | Engine Harness 3 parts | wba-engine-harness | 6× | 6 | 31 | assembly |
| 9.1 | Wire Bundle | wire-bundle | 1× | 6 | · | part |
| 9.2 | Connector | connector | 18× | 108 | · | part |
| 9.3 | Cable Lug | cable-lug | 12× | 72 | · | part |
| 10 | Stator Vane Row 1 parts | wba-engine-vane-set | 6× | 6 | 60 | assembly |
| 10.1 | Stator Vane | wba-engine-vane | 60× | 360 | · | part |
| 11 | Air Seal | wba-engine-air-seal | 80× | 80 | · | part |
| 12 | Fastener Set | fastener-set | 18000× | 18,000 | · | part |
| 13 | Nacelle & Thrust Reverser | wba-nacelle | 1× | 1 | · | part |
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Where the large turbofan engine 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 $500–$50k. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| weichai.com ↗ | Weifang, CN | Diesel & power engines | 50 units | 12–16 wks |
| cumminsindia.com ↗ | Pune, IN | Diesel engines | 50 units | 12–16 wks |
|
🇨🇳Yuchai
yuchai.com ↗
|
Yulin, CN | Diesel engines | 50 units | 12–16 wks |
| koel.co.in ↗ | Pune, IN | Diesel & gas engines | 50 units | 12–16 wks |
| ashokleyland.com ↗ | Chennai, IN | Engines & commercial vehicles | 50 units | 12–16 wks |