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Agricultural Tractor

Product

Overview

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
Agricultural Tractor parts diagram: 1 turbo-diesel engine, 2 cooling system, 3 powershift transmission, 4 front drive axle (4WD), 5 rear drive axle, 6 hydraulic system, 7 hydrostatic steering, 8 operator cab, 9 electrical system, 10 rear drive wheel, 11 front wheel, 12 diesel fuel tank, 13 rear fender, 14 front suitcase weight set, 15 swinging drawbar. 306 parts in 15 top-level items.
Agricultural Tractor parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat 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

3D model

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Build & assembly graph

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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
VendorHQSpecialtyMOQLead time
🇺🇸John Deere
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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