Planetary Wheel Drive Gearbox for Potato Harvesters

The planetary wheel drive gearbox for potato harvesters is a compact epicyclic gear system engineered for torque multiplication and speed reduction in agricultural equipment. It consists of a central sun gear, multiple orbiting planet gears mounted on a carrier, and an outer ring gear, enabling high torque output within a space-efficient design suitable for integration with wheels or hubs. In the context of potato harvesters, this wheel drive gearbox is typically installed on the drive axle to transmit power from the engine or hydraulic motor to the wheels, providing essential torque and speed adjustments for optimal performance on uneven terrain during cutting, gathering, and harvesting operations. Key functions include enhancing traction, stability, and precise power delivery under heavy loads, which improves efficiency in separating potatoes from soil while minimizing fuel consumption and tire wear.

Planetary Wheel Drive Dimensions

Technical Definitions

Symbols	Units of measurement	Description
i	-	Reduction ratio
T2max	[Nm]	Maximum output torque
T2p	[Nm]	Peak output torque
T2maxint	[Nm]	Maximum intermittent torque
T2cont	[Nm]	Continuous output torque
Pcont	[kW]	Maximum continuous power
Pint	[kW]	Maximum intermittent power
n1max	[rpm]	Maximum input speed
n2max	[rpm]	Maximum output speed

GR 80

Type	Motor disp. [cc]	Total disp. [cc]	i	Torque						Speed n2max		Power
				T2cont		T2maxint		T2p				Pcont [kW]	Pint [kW]
				[Nm]	Δp [bar]	[Nm]	Δp [bar]	[Nm]	Δp [bar]	[rpm]	portata flow [l/min]
GR80-MR50	51,6	269,9	5,23	470	145	570	175	630	205	115	30	5,5	7
GR80-MR80	80,3	420,0		800	145	960	175	1060	205	68	30	5,5	7
GR80-MR100	99,8	522,0		800	115	1000	145	1310	205	55	30	5,5	7
GR80-MR125	125,7	657,4		800	95	1000	120	1500	190	45	30	5,5	7
GR80-MR160	159,6	834,7		800	75	1000	95	1500	145	33	30	5	7
GR80-MR200	199,8	1045,0		800	60	1000	75	1500	115	26	30	5	7
GR80-MR250	249,3	1303,8		800	50	1000	60	1500	95	21	30	4,5	6

GR 200

Type	Motor disp. [cc]	Total disp. [cc]	i	Torque						Speed n2max		Power
				T2cont		T2maxint		T2p				Pcont [kW]	Pint [kW]
				[Nm]	Δp [bar]	[Nm]	Δp [bar]	[Nm]	Δp [bar]	[rpm]	portata flow [l/min]
GR200-MR50	51,6	319,9	6,20	560	145	670	175	740	205	98	30	5,5	7
GR200-MR80	80,3	497,9		950	145	1150	175	1250	205	58	30	5,5	7
GR200-MR100	99,8	618,8		1180	145	1420	175	1560	205	46	30	5,5	7
GR200-MR125	125,7	779,3		1450	145	1750	175	1920	205	38	30	5,5	7
GR200-MR160	159,6	989,5		1600	125	2100	165	2450	205	29	30	5	7
GR200-MR200	199,8	1238,8		1600	100	2150	135	2500	165	23	30	5	7
GR200-MR250	249,3	1545,7		1600	80	2150	105	2500	135	18	30	4,5	6
GR200-MR315	315,7	1957,3		1600	65	2150	85	2500	110	15	30	4	5
GR200-MR375	372,6	2310,1		1600	55	2150	70	2500	90	12	30	3,5	4,5

EH 210

Type		Weight		Oil quantity		i (da÷a / From÷to)		T2max [Nm]	n1max [rpm]
		EH 212	EH 213	EH 212	EH 213	EH 212	EH 213
EH 210 S		35	40	0.8	1	11 ÷ 29	41 ÷ 129	3950	3500
EH 210 SC
EH 210 PD			-		-

EH 240

Type		Weight		Oil quantity		i (da÷a / From÷to)		T2max [Nm]	n1max [rpm]
		EH 242	EH 243	EH 242	EH 243	EH 242	EH 243
EH 240 S		35	40	0.8	1	12 ÷ 31	45 ÷ 135	5600	3500
EH 240 SC
EH 240 PD			-		-

EH 350

Type		Weight		Oil quantity		i (da÷a / From÷to)		T2max [Nm]	n1max [rpm]
		EH 352	EH 353	EH 352	EH 353	EH 352	EH 353
EH 350 S		55	60	1	1.2	15 ÷ 31	52 ÷ 135	7200	3500
EH 350 PD

EH 610

Type		Weight		Oil quantity		i (da÷a / From÷to)		T2max [Nm]	n1max [rpm]
		EH 612	EH 613	EH 612	EH 613	EH 612	EH 613
EH 610 S		60	70	1.2	1.5	12 ÷ 31	47 ÷ 138	13500	3500
EH 610 PD

EH 910

Type		Weight	Oil quantity	i (da÷a / From÷to)	T2max	n1max
		EH 913	EH 913	EH 913	[Nm]	[rpm]
EH 910 S		130	1	47 ÷ 131	24200	3500
EH 910 PD

S Version

Size	Dimensions
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 S	230	200	180 h9	190 h9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 240 S	230	200	180 h9	190 h9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 350 S	270	230	190 h8	200 h7	240	280	M16 n°8	M16 n°8	242	107	178
EH 610 S	260	230	190 f7	220 h7	260	286	M16 n°12	M16 n°16	243	72	171
EH 910 S	330	300	270 f7	280 h7	350	370	M16 n°18	M16 n°18	368	115	253

PD Version

Size	Dimensions
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 PD	230	200	180 h9	160.8 f8	205	240	M10 (8x)	M18x1.5 (6x)	210	140	70
EH 240 PD	230	200	180 h9	160.8 f8	205	240	M10 (8x)	M18x1.5 (6x)	210	140	70
EH 350 PD	240	209.55	177.8 h8	200 h7	241.3	280	5/8"-11 UNC (6x)	5/8"-19 UNF (9x)	285	107	178
EH 610 PD	260	230	190 f7	220 h7	275	310	M16 (12x)	M20x1.5 (8x)	293	72	221
EH 910 PD	330	300	270 f7	280 h7	335	375	M16 (18x)	M22x1.5 (10x)	368	115	253

Benefits of Wheel Drive Planetary Gearbox for Potato Harvesters

• Enhanced Torque Transmission
  The planetary design provides high torque density by distributing loads across multiple planet gears, allowing potato harvesters to handle heavy soil resistance and large crop volumes without power loss, thereby improving digging and lifting efficiency in varied conditions.
• Compact and Space-Efficient Design
  Featuring a concentric input and output shaft arrangement, this wheel drive planetary gearbox integrates seamlessly into the wheel hubs of potato harvesters, reducing overall machine size while maintaining high performance, which facilitates better maneuverability in confined farmland spaces.
• Improved Traction and Stability
  By delivering consistent power to the wheels, the planetary wheel drive enhances traction on uneven or slippery terrain common in potato fields, minimizing slippage and ensuring stable operation during harvesting, which ultimately boosts productivity and reduces crop damage.
• Superior Durability and Reliability
  Constructed with robust materials and load-sharing mechanisms, the planetary gearbox withstands harsh agricultural conditions, including dust, moisture, and vibrations, leading to extended service life and lower maintenance costs for potato harvesters over prolonged use.
• Versatile Speed and Ratio Adjustments
  Offering a wide range of gear ratios, this planetary wheel drive gearbox allows precise control over output speeds to match specific harvesting requirements, such as adjusting for different soil types or crop densities, thereby optimizing fuel efficiency and operational flexibility in potato farming.
• Increased Overall Efficiency
  Through efficient power distribution and minimal energy loss, the wheel drive planetary gear reducer enhances the fuel economy and performance of potato harvesters, enabling faster harvesting cycles while reducing operational costs and environmental impact in modern agricultural practices.

Planetary Wheel Drive Gearbox Application Industry

• Agricultural Industry
  In agriculture, planetary wheel drive gearboxes are integrated into machinery such as potato harvesters, tractors, and combine harvesters to provide enhanced torque for navigating uneven terrain, improving traction during soil tilling and crop collection while reducing operational downtime and fuel consumption in large-scale farming operations.
• Mining Industry
  Within mining operations, these planetary gearboxes power haul trucks, underground loaders, and drilling rigs through wheel drives, offering high load-bearing capacity to handle extreme pressures and abrasive environments, which optimizes extraction efficiency and minimizes maintenance in resource-intensive extraction processes.
• Construction Industry
  Construction equipment like excavators, wheel loaders, and bulldozers utilize wheel drive planetary gearboxes for wheel and track drives, enabling robust torque transmission essential for heavy lifting, digging, and material movement on rugged sites, thereby enhancing machine stability and productivity in infrastructure projects.
• Forestry Industry
  Forestry machinery, including log loaders, forwarders, and harvesters, employs planetary wheel drives for superior propulsion in dense woodlands, delivering consistent power distribution to wheels for traversing soft or sloped ground, thus facilitating timber harvesting with reduced soil compaction and increased operational safety.
• Material Handling and Logistics Industry
  In material handling, planetary gearbox reducers are applied in automated guided vehicles (AGVs), forklifts, and conveyor systems for precise speed reduction and torque amplification, supporting seamless warehouse operations, cargo transport, and inventory management with enhanced maneuverability and energy efficiency.
• Municipal and Utility Vehicles Industry
  Municipal vehicles such as street sweepers, refuse trucks, and utility maintenance equipment incorporate these planetary gear reducers in wheel drives to ensure reliable performance in urban environments, providing the necessary torque for continuous operation while adapting to variable loads and contributing to sustainable public service infrastructure.

Planetary Wheel Drive for Mining Dump Trucks	Planetary Wheel Drive for Underground Drilling Jumbos
Planetary Wheel Drive for Wheat Seeders	Planetary Wheel Drive for Wheel Cranes

Wheel Drive Planetary Gearbox Oil Lubrication

• Prepare the Equipment and Workspace
  Begin by ensuring the wheel drive planetary gearbox is powered off and cooled down to prevent accidents, while gathering necessary tools including drain pans, wrenches, and protective gear. Consult the manual's manual for specific oil type recommendations and safety protocols, verifying compatibility with operational conditions like temperature and load to avoid lubrication failures during subsequent steps.
• Drain the Existing Oil
  Position a collection container beneath the drain plug and remove it to allow the old oil to fully drain from the gearbox housing, which may take several minutes depending on viscosity and volume. This step eliminates contaminated lubricant containing debris, wear particles, and degraded additives, preparing the system for fresh oil and preventing potential damage to internal gears and bearings.
• Clean the Gearbox Interior
  Flush the planetary gearbox with a compatible cleaning solvent or low-viscosity oil to remove residual sludge, contaminants, and metal shavings accumulated from operation, using compressed air if necessary to dry the components. Thorough cleaning ensures no foreign particles interfere with new lubrication, enhancing the efficiency of torque transmission in wheel drive applications under heavy loads.
• Inspect Components for Wear
  Examine internal elements such as gears, bearings, and seals for signs of damage, corrosion, or excessive wear while the planetary reduction gearbox is open, replacing any faulty parts as needed. This inspection step is crucial for planetary wheel drive gearboxes in rugged environments, as it identifies issues early, ensuring reliable performance and minimizing downtime during high-torque operations like those in potato harvesters.
• Select and Add New Lubricant
  Choose the appropriate oil type, based on planetary gear reducer specifications and operating conditions, then fill the housing to the recommended level, typically 30-50% for synthetic oils in hot environments. Proper selection and addition prevent overheating and friction, optimizing lubrication for splash or forced methods in wheel drive systems.
• Verify Levels and Test Operation
  Reinstall plugs and check oil levels using the dipstick or sight glass to confirm they align with manual guidelines, then run the gearbox at low speed to distribute the lubricant evenly while monitoring for leaks or unusual noises. This final verification ensures effective lubrication circulation, supporting long-term durability and efficiency in planetary wheel drives under variable field conditions.