Product Description

Specialist Slewing Electric Motor Pace Reducer

 

Our slewing reducer is a hardened encounter planetary equipment reduction unit created by our company according to the sophisticated international systems with all gears adopting method. The reducer has features of compact composition, steady procedure, large transmission effectiveness, low sounds, prolonged support lifestyle, substantial trustworthiness, etc. this sort of sequence reducer can be geared up with torque motor, variable frequency motor and corresponding electrical handle method to represent RCV sequence slewing system and JHF sequence slewing mechanism.
 
Suggested tower cranes are just for reference. For the distinct configuration, the alternatives of mechanism product and quantity are primarily based on comprehensive aspects such as arm size, hoisting excess weight, are excess weight, services atmosphere and functioning situation of tower crane.
Slewing Reducer

 
 

Efficiency Parameter Desk of JH Sequence Slewing Reducer

 
 

SYM HOIST & TOWER CRANE QUIPMENT CO.,LTD found in HangZhou China is 1 of the biggest provider and export of tower crane, luffing crane , topless crane , passenger hoist along with the spare elements for them. With 20 years’ experience on tower crane lease , installation , mend and reconstruction, the company has more than fifty experienced mechanical and electrical engineer responsible for the set up information, failure analysis, maintainance and reconstruction for the tower craneattheconstructionsite.
Getting a long-phrase and great cooperative relationship with China’s most popular producer of tower crane and passenger hoist like YONGMAO, SANYO, ZheJiang SCM, Zoomlion, GJJ, BAODA,and many others. The organization can offer you the very best top quality first tower crane and passenger hoist with most competitive cost.

Also, we can provide consumers with the ideal professional providers, help buyers make the appropriate judgment, also the prompt cargo since of the biggest number and most full tower crane and passenger hoist spare elements inventory.
Our trading associates go all more than the world, largely in South-East Asia (Singapore, Hong Kong, Malaysia, Indonesia, the Philippines, Thailand, South Korea, Vietnam ), Center East (The United Arab Emirates, Saudi Arabia, Qatar, Bahrain, Kuwait, Iran ), India, Russia, Ukraine, Brazil, and many others.

Type	Output torque	Transmission ratio	Crown shaving	Mechanism
JH01	5000	141	10  12  +0.32	OMD45,RCV95
JH02	12000	163.2	12  12  +0.5	OMD85,RCV120
JH07	6500	176	10  12  +0.32	OMD55,RCV95
JH08	6000	164.29	10  12  +0.32	OMD55,RCV95

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Product Code	Performance Parameter		Output Gear Parameter (Customization is avaliable)	(kg) Weight	RCV Parameters of RCV Series matching torque Motor	JHF Parameters of JHF Series Variable Frequency Motor	(t·m) Recommended Tower crane t.m
	Ratio	(N·m) Rated Output Torque N.m			(N.m) Rated Stalling Torque of the Motor	(kW) Rated Power of the Motor KW
JH07	176	6000	m=10,z=12,x=+0.32	90	75,95	4.4,5.5	40~125
JH08	164
JH13	143	9000	m=10,z=13,x=+0.5	130	95,120	5.5	63~160
JH13C	162
JH02	163	12000	m=12,z=12,x=+0.5	150	145,185	9	160~250
JH02C	192
JH17	200	18000	m=16,z=12,x=+0.5	240		11,15	315~630
JH15	160	24000	m=18,z=14,x=+0.5	410		11,15	450~900
JH10A	287	35000	m=20,z=12,x=+0.5	860		18.4	900~2200
Recommended tower cranes are just for reference. For the specific configuration, the choices of mechanism model and quantity are based on comprehensive factory including arm length, hoisting weight, arm weight, serbice environment and working condition of tower crane

Type	Output torque	Transmission ratio	Crown shaving	Mechanism
JH01	5000	141	10  12  +0.32	OMD45,RCV95
JH02	12000	163.2	12  12  +0.5	OMD85,RCV120
JH07	6500	176	10  12  +0.32	OMD55,RCV95
JH08	6000	164.29	10  12  +0.32	OMD55,RCV95

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Product Code	Performance Parameter		Output Gear Parameter (Customization is avaliable)	(kg) Weight	RCV Parameters of RCV Series matching torque Motor	JHF Parameters of JHF Series Variable Frequency Motor	(t·m) Recommended Tower crane t.m
	Ratio	(N·m) Rated Output Torque N.m			(N.m) Rated Stalling Torque of the Motor	(kW) Rated Power of the Motor KW
JH07	176	6000	m=10,z=12,x=+0.32	90	75,95	4.4,5.5	40~125
JH08	164
JH13	143	9000	m=10,z=13,x=+0.5	130	95,120	5.5	63~160
JH13C	162
JH02	163	12000	m=12,z=12,x=+0.5	150	145,185	9	160~250
JH02C	192
JH17	200	18000	m=16,z=12,x=+0.5	240		11,15	315~630
JH15	160	24000	m=18,z=14,x=+0.5	410		11,15	450~900
JH10A	287	35000	m=20,z=12,x=+0.5	860		18.4	900~2200
Recommended tower cranes are just for reference. For the specific configuration, the choices of mechanism model and quantity are based on comprehensive factory including arm length, hoisting weight, arm weight, serbice environment and working condition of tower crane

The Parts of a Gearbox

There are many parts of a Gearbox, and this article will help you understand its functions and components. Learn about its maintenance and proper care, and you’ll be on your way to repairing your car. The complexity of a Gearbox also makes it easy to make mistakes. Learn about its functions and components so that you’ll be able to make the best choices possible. Read on to learn more. Then, get your car ready for winter!

Components

Gearboxes are fully integrated mechanical components that consist of a series of gears. They also contain shafts, bearings, and a flange to mount a motor. The terms gearhead and gearbox are not often used interchangeably in the motion industry, but they are often synonymous. Gearheads are open gearing assemblies that are installed in a machine frame. Some newer designs, such as battery-powered mobile units, require tighter integration.
The power losses in a gearbox can be divided into no-load and load-dependent losses. The no-load losses originate in the gear pair and the bearings and are proportional to the ratio of shaft speed and torque. The latter is a function of the coefficient of friction and speed. The no-load losses are the most serious, since they represent the largest proportion of the total loss. This is because they increase with speed.
Temperature measurement is another important preventive maintenance practice. The heat generated by the gearbox can damage components. High-temperature oil degrades quickly at high temperatures, which is why the sump oil temperature should be monitored periodically. The maximum temperature for R&O mineral oils is 93degC. However, if the sump oil temperature is more than 200degF, it can cause seal damage, gear and bearing wear, and premature failure of the gearbox.
Regardless of its size, the gearbox is a crucial part of a car’s drivetrain. Whether the car is a sports car, a luxury car, or a farm tractor, the gearbox is an essential component of the vehicle. There are two main types of gearbox: standard and precision. Each has its own advantages and disadvantages. The most important consideration when selecting a gearbox is the torque output.
The main shaft and the clutch shaft are the two major components of a gearbox. The main shaft runs at engine speed and the countershaft may be at a lower speed. In addition to the main shaft, the clutch shaft has a bearing. The gear ratio determines the amount of torque that can be transferred between the countershaft and the main shaft. The drive shaft also has another name: the propeller shaft.
The gears, shafts, and hub/shaft connection are designed according to endurance design standards. Depending on the application, each component must be able to withstand the normal stresses that the system will experience. Oftentimes, the minimum speed range is ten to twenty m/s. However, this range can differ between different transmissions. Generally, the gears and shafts in a gearbox should have an endurance limit that is less than that limit.
The bearings in a gearbox are considered wear parts. While they should be replaced when they wear down, they can be kept in service much longer than their intended L10 life. Using predictive maintenance, manufacturers can determine when to replace the bearing before it damages the gears and other components. For a gearbox to function properly, it must have all the components listed above. And the clutch, which enables the transmission of torque, is considered the most important component.

Functions

A gearbox is a fully integrated mechanical component that consists of mating gears. It is enclosed in a housing that houses the shafts, bearings, and flange for motor mounting. The purpose of a gearbox is to increase torque and change the speed of an engine by connecting the two rotating shafts together. A gearbox is generally made up of multiple gears that are linked together using couplings, belts, chains, or hollow shaft connections. When power and torque are held constant, speed and torque are inversely proportional. The speed of a gearbox is determined by the ratio of the gears that are engaged to transmit power.
The gear ratios in a gearbox are the number of steps a motor can take to convert torque into horsepower. The amount of torque required at the wheels depends on the operating conditions. A vehicle needs more torque than its peak torque when it is moving from a standstill. Therefore, the first gear ratio is used to increase torque and move the vehicle forward. To move up a gradient, more torque is required. To maintain momentum, the intermediate gear ratio is used.
As metal-to-metal contact is a common cause of gearbox failure, it is essential to monitor the condition of these components closely. The main focus of the proactive series of tests is abnormal wear and contamination, while the preventative tests focus on oil condition and additive depletion. The AN and ferrous density tests are exceptions to this rule, but they are used more for detecting abnormal additive depletion. In addition, lubrication is critical to the efficiency of gearboxes.

Maintenance

Daily maintenance is a critical aspect of the life cycle of a gearbox. During maintenance, you must inspect all gearbox connection parts. Any loose or damaged connection part should be tightened immediately. Oil can be tested using an infrared thermometer and particle counters, spectrometric analysis, or ferrography. You should check for excessive wear and tear, cracks, and oil leaks. If any of these components fail, you should replace them as soon as possible.
Proper analysis of failure patterns is a necessary part of any preventative maintenance program. This analysis will help identify the root cause of gearbox failures, as well as plan for future preventative maintenance. By properly planning preventative maintenance, you can avoid the expense and inconvenience of repairing or replacing a gearbox prematurely. You can even outsource gearbox maintenance to a company whose experts are knowledgeable in this field. The results of the analysis will help you create a more effective preventative maintenance program.
It is important to check the condition of the gearbox oil periodically. The oil should be changed according to its temperature and the hours of operation. The temperature is a significant determinant of the frequency of oil changes. Higher temperatures require more frequent changes, and the level of protection from moisture and water reduces by 75%. At elevated temperatures, the oil’s molecular structure breaks down more quickly, inhibiting the formation of a protective film.
Fortunately, the gear industry has developed innovative technologies and services that can help plant operators reduce their downtime and ensure optimal performance from their industrial gears. Here are 10 steps to ensure that your gearbox continues to serve its purpose. When you are preparing for maintenance, always keep in mind the following tips:
Regular vibration analysis is a vital part of gearbox maintenance. Increased vibration signals impending problems. Visually inspect the internal gears for signs of spiraling and pitting. You can use engineers’ blue to check the contact pattern of gear teeth. If there is a misalignment, bearings or housings are worn and need replacement. Also make sure the breathers remain clean. In dirty applications, this is more difficult to do.
Proper lubrication is another key factor in the life of gearboxes. Proper lubrication prevents failure. The oil must be free of foreign materials and have the proper amount of flow. Proper lubricant selection depends on the type of gear, reduction ratio, and input power. In addition to oil level, the lubricant must be regulated for the size and shape of gears. If not, the lubricant should be changed.
Lack of proper lubrication reduces the strength of other gears. Improper maintenance reduces the life of the transmission. Whether the transmission is overloaded or undersized, excessive vibration can damage the gear. If it is not properly lubricated, it can be damaged beyond repair. Then, the need for replacement gears may arise. However, it is not a time to waste a lot of money and time on repairs.