Gearbox Penggerak Roda Planet untuk Motor Grader

The planetary wheel drive gearbox for motor graders is a robust, compact transmission system integrated into the final drive assembly at the wheels or axles of the grader. It serves as a reducer, amplifying torque while reducing speed to provide the high traction and power necessary for heavy-duty operations on uneven terrain, such as road grading, earthmoving, and surface leveling. Typically powered by hydraulic motors or the vehicle's engine via a transmission shaft, this wheel drive planetary gearbox employs an epicyclic gear arrangement consisting of a central sun gear, multiple orbiting planet gears mounted on a carrier, and an outer ring gear.

The sun gear receives input power, driving the planet gears against the fixed ring gear, which causes the carrier to rotate and deliver output to the wheel at a reduced speed but significantly increased torque. This design enables load distribution across multiple gear teeth, enhancing durability and efficiency in harsh conditions. In motor graders, which are off-road construction vehicles often featuring all-wheel drive, the planetary gearbox ensures stable propulsion, torque distribution between front and rear wheels via differentials, and precise speed control through joystick or pedal adjustments to the hydraulic motor.

Dimensi Penggerak Roda Planet

Definisi Teknis

Simbol	Satuan pengukuran	Keterangan
Saya	-	Rasio pengurangan
T2max	[Nm]	Torsi keluaran maksimum
T2p	[Nm]	Torsi keluaran puncak
T2maxint	[Nm]	Torsi intermiten maksimum
T2cont	[Nm]	Torsi keluaran kontinu
Pcont	[kW]	Daya kontinu maksimum
Pint	[kW]	Daya intermiten maksimum
n1max	[rpm]	Kecepatan input maksimum
n2max	[rpm]	Kecepatan keluaran maksimum

GR 80

Jenis	Motor disp. [cc]	Total disp. [cc]	Saya	Torsi						Kecepatan n2max		Kekuatan
				T2cont		T2maxint		T2p				Pcont [kW]	Pint [kW]
				[Nm]	Δp [bar]	[Nm]	Δp [bar]	[Nm]	Δp [bar]	[rpm]	portata mengalir [l/menit]
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

Jenis	Motor disp. [cc]	Total disp. [cc]	Saya	Torsi						Kecepatan N2maksimal		Kekuatan
				T2lanjut		T2maksimal		T2P				Pcont [kW]	Pint [kW]
				[Nm]	Δp [bar]	[Nm]	Δp [bar]	[Nm]	Δp [bar]	[rpm]	portata mengalir [l/menit]
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

Jenis		Berat		Jumlah minyak		i (da÷a / Dari÷ke)		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

Jenis		Berat		Jumlah minyak		i (da÷a / Dari÷ke)		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

Jenis		Berat		Jumlah minyak		i (da÷a / Dari÷ke)		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

Jenis		Berat		Jumlah minyak		i (da÷a / Dari÷ke)		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

Jenis		Berat	Jumlah minyak	i (da÷a / Dari÷ke)	T2max	n1max
		EH 913	EH 913	EH 913	[Nm]	[rpm]
EH 910 S		130	1	47 ÷ 131	24200	3500
EH 910 PD

Versi S

Ukuran	Ukuran
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 S	230	200	180 jam 9	190 jam 9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 240 S	230	200	180 jam 9	190 jam 9	210	229.5	M10 n°8	M10 n°8	253	73	180
EH 350 S	270	230	190 jam 8	200 jam 7	240	280	M16 n°8	M16 n°8	242	107	178
EH 610 S	260	230	190 f7	220 jam 7	260	286	M16 n°12	M16 n°16	243	72	171
EH 910 S	330	300	270 f7	280 jam 7	350	370	M16 n°18	M16 n°18	368	115	253

Versi PD

Ukuran	Ukuran
	D1	D2	D3	D4	D5	D6	D7	D8	L1	L2	L3
EH 210 PD	230	200	180 jam 9	160,8 f8	205	240	M10 (8x)	M18x1.5 (6x)	210	140	70
EH 240 PD	230	200	180 jam 9	160,8 f8	205	240	M10 (8x)	M18x1.5 (6x)	210	140	70
EH 350 PD	240	209.55	177,8 jam8	200 jam 7	241.3	280	5/8"-11 UNC (6x)	5/8"-19 UNF (9x)	285	107	178
EH 610 PD	260	230	190 f7	220 jam 7	275	310	M16 (12x)	M20x1.5 (8x)	293	72	221
EH 910 PD	330	300	270 f7	280 jam 7	335	375	M16 (18x)	M22x1.5 (10x)	368	115	253

Motor Grader Planetary Wheel Drive Gearbox Benefits

• High Torque Output for Heavy-Duty Operations
  The planetary gearbox significantly amplifies torque while reducing wheel speed, enabling motor graders to handle heavy loads and challenging terrain. This enhanced torque ensures the machine can perform tasks like earthmoving, road grading, and leveling with greater ease, even in demanding environments such as steep slopes or loose soil.
• Desain Ringkas dan Hemat Ruang
  The planetary wheel drive features a compact configuration that integrates seamlessly into the final drive assembly. Despite its small size, it delivers exceptional power and efficiency, reducing the need for bulky components and allowing optimal utilization of space within the grader’s overall drivetrain system.
• Even Load Distribution for Enhanced Durability
  The epicyclic gear arrangement distributes loads evenly across multiple gear teeth, minimizing wear and tear. This design reduces stress on individual components and extends the operational lifespan of the gearbox, ensuring reliable performance in harsh conditions like construction sites and off-road terrains.
• Peningkatan Traksi dan Stabilitas
  By delivering high torque directly to the wheels, the wheel drive planetary gearbox improves traction, making it ideal for uneven, slippery, or rough surfaces. This stability enhances the grader's ability to maintain precise control and consistent performance, improving safety and efficiency during operations.
• Energy Efficiency and Reduced Power Loss
  The wheel drive gearbox design minimizes energy losses by optimizing torque transfer and reducing mechanical inefficiencies. This results in better fuel economy and overall energy efficiency, which is particularly beneficial for long hours of operation, reducing operational costs and environmental impact.
• Seamless Integration with Hydraulic and Engine Systems
  The planetary gear reducer integrates smoothly with hydraulic motors or the vehicle’s engine via a transmission shaft. This compatibility allows precise speed control and torque adjustments, enabling operators to adapt to varying workloads and terrain conditions effortlessly, enhancing productivity and operational flexibility.

Wheel Drive Planetary Gearbox Uses

• Industri Konstruksi
  Wheel drive planetary gearboxes are extensively utilized in construction machinery such as excavators, loaders, and motor graders, providing high torque and compact design for efficient power transmission on rugged terrains. Their ability to handle heavy loads and shock impacts ensures reliable performance in earthmoving and road-building tasks, enhancing operational durability and productivity.
• Industri Pertanian
  In agricultural equipment like tractors, sprayers, planters, and combine harvesters, these planetary gearboxes deliver substantial torque multiplication and speed reduction, enabling precise control over wheel drives in varied field conditions. This application supports efficient soil tillage and crop harvesting, reducing maintenance needs while improving fuel economy in demanding farming environments.
• Industri Pertambangan
  Mining vehicles, including haul trucks and drilling rigs, benefit from planetary wheel drive gearboxes due to their robust construction and high load-bearing capacity, which withstand extreme pressures and abrasive materials. They facilitate smooth propulsion and torque distribution, ensuring safety and efficiency in underground and open-pit extraction processes.
• Material Handling and Logistics
  Automated guided vehicles (AGVs) and warehouse robots employ these planetary wheel drives for precise wheel control and compact integration, optimizing space in logistics facilities. Their low backlash and high efficiency support seamless navigation and load transportation, contributing to streamlined supply chain operations and reduced downtime.
• Renewable Energy Applications
  In wind turbine systems, wheel drive planetary gear reducers provide high torque density for slew drives, enabling accurate positioning and rotation under variable wind loads. This enhances energy capture efficiency and system longevity, making them essential for sustainable power generation in onshore and offshore installations.
• Robotika dan Otomasi
  Industrial robots and automated machinery integrate planetary gearbox reducers for their compact size and precise motion control, handling high-speed operations in manufacturing lines. They offer superior gear ratios and minimal vibration, supporting applications in assembly, packaging, and precision engineering tasks.

Planetary Wheel Drive for Backhoe Loaders	Penggerak Roda Planet untuk Truk Pengangkut Tambang
Penggerak Roda Planet untuk Motor Grader	Penggerak Roda Planet untuk Alat Penyemprot Boom

Wheel Drive Planetary Gearbox Components

• Sun Gear
  Positioned at the center of the planetary system, the sun gear receives input from the hydraulic motor or engine shaft, rotating at high speed to drive the surrounding planet gears. This central component facilitates torque multiplication and speed reduction, ensuring efficient power transfer in wheel drive applications for vehicles like excavators and tractors on uneven terrain. Its robust construction from case-hardened steel enhances durability under heavy loads.
• Roda Gigi Planet
  Multiple planet gears orbit the sun gear while meshing with both it and the ring gear, distributing mechanical loads evenly to minimize wear and vibration. In wheel drive gearboxes, they enable high torque density and smooth operation, supporting heavy-duty tasks in construction and agriculture by providing reliable torque amplification in a compact design. This load-sharing mechanism contributes to extended service life and operational efficiency.
• Roda Gigi Cincin
  The outer ring gear encircles the planet gears and remains fixed to the housing, serving as a stationary reference point that allows the planets to rotate against it for effective gear reduction. Essential in wheel drive systems, it ensures precise torque delivery to the wheels, enhancing traction and stability on challenging surfaces while maintaining a lightweight profile. Its tempered steel build withstands extreme pressures in industrial environments.
• Pembawa Planet
  Holding the planet gears in place, the carrier rotates to transmit amplified torque from the planetary assembly to the output sprocket or shaft, balancing loads for optimal performance. In wheel drive planetary gearboxes, it supports seamless power distribution, improving vehicle maneuverability and reducing downtime in applications such as mining and earthmoving operations. This component's design promotes high efficiency and adaptability.
• Housing
  The protective enclosure that encases all internal components, the housing is designed for mounting directly to the wheel frame, offering robust support against radial and axial loads. In planetary wheel drive gearboxes, it facilitates compact integration, protects gears from contaminants, and includes mounting options for sprockets, enhancing overall system reliability in harsh outdoor conditions. This feature optimizes space and maintenance accessibility.