Agricultural Tractor
ProductOverview
An agricultural tractor delivers traction and power to farm implements: pulling ploughs and trailers, driving rotary equipment through the power take-off, and lifting mounted tools on the rear hitch. A 4WD utility tractor balances drawbar pull, PTO power and hydraulic lift in a machine sized for general field and yard work. Power comes from a common-rail Turbo-Diesel Engine feeding a Powershift Transmission that splits drive to both axles.
Large rear drive wheels and a Rear Drive Axle carry most of the traction, while the steerable Front Drive Axle (4WD) adds 4WD pull and turns under hydrostatic Hydrostatic Steering.
How it works
The engine drives a powershift transmission that changes ratio under load without breaking torque, sending power to the rear axle and, when engaged, forward to the 4WD front axle. A rear PTO taps engine speed to drive implements such as mowers and balers at standard 540 or 1000 rpm.
The Hydraulic System system runs the three-point hitch, whose two lift arms and cylinders raise and lower mounted implements while the top and lower links set their geometry; remote valves feed external cylinders on trailed equipment. The implement is positioned by hitch geometry and held by draft control that senses soil load.
For traction the rear axle carries a differential lock and wet-disc brakes, with planetary final drives reducing speed and multiplying torque at each wheel. Ballast, front suitcase weights and wheel weights, keeps the front planted and the drive tyres gripping under heavy draft loads. The operator works from a Operator Cab with a ROPS frame, HVAC and instrument cluster, and a 12-volt Electrical System system handles starting, charging and lighting.
Agricultural Tractor parts and their functions
15 top-level parts · 306 parts in total · full bill of materials below| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Turbo-Diesel Engine 14 parts | 1× | Turbo-diesel prime mover |
| 2 | Cooling System 4 parts | 1× | |
| 3 | Powershift Transmission 7 parts | 1× | Clutch, range gears, powershift packs, and rear PTO. |
| 4 | Front Drive Axle (4WD) 5 parts | 1× | 4WD steer/drive |
| 5 | Rear Drive Axle 7 parts | 1× | Main drive axle |
| 6 | Hydraulic System 5 parts | 1× | Three-point hitch lift plus remote valves. |
| 7 | Hydrostatic Steering 3 parts | 1× | Hydrostatic |
| 8 | Operator Cab 7 parts | 1× | |
| 9 | Electrical System 5 parts | 1× | |
| 10 | Rear Drive Wheel 3 parts | 2× | Large drive wheels |
| 11 | Front Wheel 2 parts | 2× | |
| 12 | Diesel Fuel Tank | 1× | |
| 13 | Rear Fender | 2× | |
| 14 | Front Suitcase Weight Set | 1× | Front suitcase weights |
| 15 | Swinging Drawbar | 1× | Towed-implement hitch |
Diagrams & photos
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Bill of materials for Agricultural Tractor
15 top-level lines · 147 rows shown · 306 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Turbo-Diesel Engine 14 parts | tractor-engine | 1× | 1 | 34 | assembly |
| 1.1 | Cast-Iron Engine Block | tractor-engine-block | 1× | 1 | · | part |
| 1.2 | Cylinder Head (valvetrain) | tractor-cylinder-head | 1× | 1 | · | part |
| 1.3 | Forged Crankshaft | tractor-crankshaft | 1× | 1 | · | part |
| 1.4 | Camshaft | tractor-camshaft | 1× | 1 | · | part |
| 1.5 | Piston & Connecting Rod | tractor-piston | 4× | 4 | · | part |
| 1.6 | Turbocharger 4 parts | tractor-turbocharger | 1× | 1 | 5 | assembly |
| 1.6.1 | Turbine Wheel | tractor-turbine-wheel | 1× | 1 | · | part |
| 1.6.2 | Compressor Wheel | tractor-compressor-wheel | 1× | 1 | · | part |
| 1.6.3 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 1.6.4 | Oil Seal | oil-seal | 1× | 1 | · | part |
| 1.7 | Common-Rail Fuel System 3 parts | tractor-common-rail | 1× | 1 | 6 | assembly |
| 1.7.1 | Diesel Injector | tractor-injector | 4× | 4 | · | part |
| 1.7.2 | High-Pressure Pump | tractor-hp-pump | 1× | 1 | · | part |
| 1.7.3 | Fuel Filter | tractor-fuel-filter | 1× | 1 | · | part |
| 1.8 | Oil Pump | tractor-oil-pump | 1× | 1 | · | part |
| 1.9 | Fuel Lift Pump | tractor-fuel-pump | 1× | 1 | · | part |
| 1.10 | Air Filter | tractor-air-filter | 1× | 1 | · | part |
| 1.11 | DPF/SCR Aftertreatment 3 parts | tractor-aftertreatment | 1× | 1 | 3 | assembly |
| 1.11.1 | Diesel Particulate Filter | tractor-dpf | 1× | 1 | · | part |
| 1.11.2 | SCR Catalyst | tractor-scr-catalyst | 1× | 1 | · | part |
| 1.11.3 | DEF Tank | tractor-def-tank | 1× | 1 | · | part |
| 1.12 | Ball Bearing | ball-bearing | 5× | 5 | · | part |
| 1.13 | Oil Seal | oil-seal | 3× | 3 | · | part |
| 1.14 | Fastener Set | fastener-set | 1× | 1 | · | part |
| 2 | Cooling System 4 parts | tractor-cooling | 1× | 1 | 7 | assembly |
| 2.1 | Radiator | radiator | 1× | 1 | · | part |
| 2.2 | Coolant Pump | coolant-pump | 1× | 1 | · | part |
| 2.3 | Viscous Cooling Fan | tractor-cooling-fan | 1× | 1 | · | part |
| 2.4 | Coolant Hose | tractor-coolant-hose | 4× | 4 | · | part |
| 3 | Powershift Transmission 7 parts | tractor-transmission | 1× | 1 | 37 | assembly |
| 3.1 | Clutch Assembly 3 parts | tractor-clutch | 1× | 1 | 3 | assembly |
| 3.1.1 | Clutch Disc & Pressure Plate | tractor-clutch-disc | 1× | 1 | · | part |
| 3.1.2 | Flywheel | tractor-flywheel | 1× | 1 | · | part |
| 3.1.3 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 3.2 | Helical Gear Pair | gear-pair | 6× | 6 | · | part |
| 3.3 | Powershift Clutch Pack 3 parts | tractor-powershift-pack | 1× | 1 | 11 | assembly |
| 3.3.1 | Wet Clutch Plate | tractor-clutch-plate | 6× | 6 | · | part |
| 3.3.2 | Hydraulic Shift Valve | tractor-shift-valve | 4× | 4 | · | part |
| 3.3.3 | O-Ring Set | oring-set | 1× | 1 | · | part |
| 3.4 | Power Take-Off (PTO) 4 parts | tractor-pto | 1× | 1 | 5 | assembly |
| 3.4.1 | PTO Output Shaft & Clutch | tractor-pto-shaft | 1× | 1 | · | part |
| 3.4.2 | Helical Gear Pair | gear-pair | 1× | 1 | · | part |
| 3.4.3 | Oil Seal | oil-seal | 1× | 1 | · | part |
| 3.4.4 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 3.5 | Gearbox Housing | gearbox-housing | 1× | 1 | · | part |
| 3.6 | Ball Bearing | ball-bearing | 8× | 8 | · | part |
| 3.7 | Oil Seal | oil-seal | 3× | 3 | · | part |
| 4 | Front Drive Axle (4WD) 5 parts | tractor-front-axle | 1× | 1 | 15 | assembly |
| 4.1 | Open Differential 4 parts | differential | 1× | 1 | 6 | assembly |
| 4.1.1 | Differential Case | diff-case | 1× | 1 | · | part |
| 4.1.2 | Side Gear | side-gear | 2× | 2 | · | part |
| 4.1.3 | Pinion Gear | pinion-gear | 2× | 2 | · | part |
| 4.1.4 | Cross Pin | cross-pin | 1× | 1 | · | part |
| 4.2 | Planetary Final Drive | tractor-final-drive | 2× | 2 | · | part |
| 4.3 | Axle Housing | tractor-axle-housing | 1× | 1 | · | part |
| 4.4 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 4.5 | Oil Seal | oil-seal | 2× | 2 | · | part |
| 5 | Rear Drive Axle 7 parts | tractor-rear-axle | 1× | 1 | 18 | assembly |
| 5.1 | Open Differential 4 parts | differential | 1× | 1 | 6 | assembly |
| 5.1.1 | Differential Case | diff-case | 1× | 1 | · | part |
| 5.1.2 | Side Gear | side-gear | 2× | 2 | · | part |
| 5.1.3 | Pinion Gear | pinion-gear | 2× | 2 | · | part |
| 5.1.4 | Cross Pin | cross-pin | 1× | 1 | · | part |
| 5.2 | Differential Lock | tractor-diff-lock | 1× | 1 | · | part |
| 5.3 | Planetary Final Drive | tractor-final-drive | 2× | 2 | · | part |
| 5.4 | Axle Housing | tractor-axle-housing | 1× | 1 | · | part |
| 5.5 | Wet Disc Brake Pack | tractor-brake-pack | 2× | 2 | · | part |
| 5.6 | Ball Bearing | ball-bearing | 4× | 4 | · | part |
| 5.7 | Oil Seal | oil-seal | 2× | 2 | · | part |
| 6 | Hydraulic System 5 parts | tractor-hydraulics | 1× | 1 | 25 | assembly |
| 6.1 | Hydraulic Pump 3 parts | tractor-hydraulic-pump | 1× | 1 | 4 | assembly |
| 6.1.1 | Helical Gear Pair | gear-pair | 1× | 1 | · | part |
| 6.1.2 | Oil Seal | oil-seal | 1× | 1 | · | part |
| 6.1.3 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 6.2 | Control Valve Block | tractor-valve-block | 1× | 1 | · | part |
| 6.3 | Three-Point Hitch 4 parts | tractor-three-point-hitch | 1× | 1 | 12 | assembly |
| 6.3.1 | Lift Arm | tractor-lift-arm | 2× | 2 | · | part |
| 6.3.2 | Lift Hydraulic Cylinder 4 parts + deeper › | tractor-lift-cylinder | 2× | 2 | 4 | assembly |
| 6.3.3 | Top & Lower Link Set | tractor-link-set | 1× | 1 | · | part |
| 6.3.4 | Fastener Set | fastener-set | 1× | 1 | · | part |
| 6.4 | Remote Hydraulic Valve | tractor-remote-valve | 2× | 2 | · | part |
| 6.5 | Hydraulic Hose | tractor-hydraulic-hose | 6× | 6 | · | part |
| 7 | Hydrostatic Steering 3 parts | tractor-steering | 1× | 1 | 7 | assembly |
| 7.1 | Steering Control Unit (Orbitrol) | tractor-steering-unit | 1× | 1 | · | part |
| 7.2 | Steering Cylinder 4 parts | tractor-steering-cylinder | 1× | 1 | 4 | assembly |
| 7.2.1 | Cylinder Tube | tractor-cylinder-tube | 1× | 1 | · | part |
| 7.2.2 | Piston Rod | tractor-piston-rod | 1× | 1 | · | part |
| 7.2.3 | O-Ring Set | oring-set | 1× | 1 | · | part |
| 7.2.4 | Oil Seal | oil-seal | 1× | 1 | · | part |
| 7.3 | Steering Tie Rod | tractor-tie-rod | 2× | 2 | · | part |
| 8 | Operator Cab 7 parts | tractor-cab | 1× | 1 | 20 | assembly |
| 8.1 | ROPS Cab Frame | tractor-rops-frame | 1× | 1 | · | part |
| 8.2 | Seat Assembly 5 parts | seat-assembly | 1× | 1 | 7 | assembly |
| 8.2.1 | Seat Frame | seat-frame | 1× | 1 | · | part |
| 8.2.2 | Seat Foam | seat-foam | 2× | 2 | · | part |
| 8.2.3 | Seat Cover | seat-cover | 1× | 1 | · | part |
| 8.2.4 | Seat Motor | seat-motor | 2× | 2 | · | part |
| 8.2.5 | Seat Heater Mat | seat-heater | 1× | 1 | · | part |
| 8.3 | Steering Wheel | tractor-steering-wheel | 1× | 1 | · | part |
| 8.4 | Control Console | tractor-control-console | 1× | 1 | · | part |
| 8.5 | Cab HVAC Unit 3 parts | tractor-hvac | 1× | 1 | 3 | assembly |
| 8.5.1 | HVAC Blower | tractor-blower | 1× | 1 | · | part |
| 8.5.2 | Heating Element | heating-element | 1× | 1 | · | part |
| 8.5.3 | Cabin Air Filter | tractor-cabin-filter | 1× | 1 | · | part |
| 8.6 | Instrument Cluster 3 parts | tractor-instrument-cluster | 1× | 1 | 3 | assembly |
| 8.6.1 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 8.6.2 | Microcontroller | mcu | 1× | 1 | · | part |
| 8.6.3 | LCD Panel | lcd-panel | 1× | 1 | · | part |
| 8.7 | Cab Glass Panel | tractor-cab-glass | 4× | 4 | · | part |
| 9 | Electrical System 5 parts | tractor-electrical | 1× | 1 | 96 | assembly |
| 9.1 | 12 V Battery | lv-battery | 2× | 2 | · | part |
| 9.2 | Alternator 3 parts | tractor-alternator | 1× | 1 | 24 | assembly |
| 9.2.1 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 9.2.2 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 9.2.3 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 9.3 | Starter Motor 3 parts | tractor-starter | 1× | 1 | 24 | assembly |
| 9.3.1 | Stator Assembly 3 parts + deeper › | stator-assembly | 1× | 1 | 3 | assembly |
| 9.3.2 | Rotor Assembly 4 parts + deeper › | rotor-assembly | 1× | 1 | 19 | assembly |
| 9.3.3 | Ball Bearing | ball-bearing | 2× | 2 | · | part |
| 9.4 | Wiring Harness 4 parts | tractor-harness | 1× | 1 | 40 | assembly |
| 9.4.1 | Wire Bundle | wire-bundle | 1× | 1 | · | part |
| 9.4.2 | Connector | connector | 30× | 30 | · | part |
| 9.4.3 | Fuse Box | fuse-box | 1× | 1 | · | part |
| 9.4.4 | Relay | relay | 8× | 8 | · | part |
| 9.5 | LED Work Light | tractor-work-light | 6× | 6 | · | part |
| 10 | Rear Drive Wheel 3 parts | tractor-rear-wheel | 2× | 2 | 11 | assembly |
| 10.1 | Wheel Assembly 5 parts | wheel-assembly | 1× | 2 | 9 | assembly |
| 10.1.1 | Alloy Wheel | alloy-wheel | 1× | 2 | · | part |
| 10.1.2 | Tire | tire | 1× | 2 | · | part |
| 10.1.3 | TPMS Sensor | tpms-sensor | 1× | 2 | · | part |
| 10.1.4 | Lug Nut | lug-nut | 5× | 10 | · | part |
| 10.1.5 | Valve Stem | valve-stem | 1× | 2 | · | part |
| 10.2 | Tire | tire | 1× | 2 | · | part |
| 10.3 | Wheel Ballast Weight | tractor-wheel-weight | 1× | 2 | · | part |
| 11 | Front Wheel 2 parts | tractor-front-wheel | 2× | 2 | 10 | assembly |
| 11.1 | Wheel Assembly 5 parts | wheel-assembly | 1× | 2 | 9 | assembly |
| 11.1.1 | Alloy Wheel | alloy-wheel | 1× | 2 | · | part |
| 11.1.2 | Tire | tire | 1× | 2 | · | part |
| 11.1.3 | TPMS Sensor | tpms-sensor | 1× | 2 | · | part |
| 11.1.4 | Lug Nut | lug-nut | 5× | 10 | · | part |
| 11.1.5 | Valve Stem | valve-stem | 1× | 2 | · | part |
| 11.2 | Tire | tire | 1× | 2 | · | part |
| 12 | Diesel Fuel Tank | tractor-fuel-tank | 1× | 1 | · | part |
| 13 | Rear Fender | tractor-fender | 2× | 2 | · | part |
| 14 | Front Suitcase Weight Set | tractor-ballast | 1× | 1 | · | part |
| 15 | Swinging Drawbar | tractor-drawbar | 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 $5k–$800k. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| deere.com ↗ | Moline, US | Agriculture & turf | made to order | 14–24 wks |
| cnh.com ↗ | Basildon, GB | Agriculture (Case IH, New Holland) | made to order | 14–24 wks |
|
🇺🇸AGCO
agcocorp.com ↗
|
Duluth, US | Agriculture (Fendt, Massey Ferguson) | made to order | 14–24 wks |
|
🇩🇪Claas
claas.com ↗
|
Harsewinkel, DE | Harvesters & tractors | made to order | 14–24 wks |
|
🇯🇵Kubota
kubota.com ↗
|
Osaka, JP | Compact tractors & equipment | made to order | 14–24 wks |
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