China Custom marine gearbox 120C with Great quality

Product Number: 120C
Gearing Arrangement: Bevel / Miter
Output Torque: 25000n
Rated Electricity: one hundred-250kw
Enter Pace: a thousand-2500rpm
Output Pace: according to ratio
Packaging Information: plywood
Port: ZheJiang and HangZhou

Matching desk for some deisel engine

Diesel model
Transmission capacity
Matching speed-ratio selection i

ZheJiang diesel
Engine works

a hundred and five/1500










Kel vin(U.K)

one hundred thirty/1500



ninety six/1080

a hundred sixty five/1900

one hundred ninety/2200





WD615.sixty three


WD615.seventy seven

  1. Transmission mode:5 helical gears with 3 shafts
  2. Clutch kind:hydraulic management,wet type multiplate clutch
  3. kind of input coupling:toothed rubber block coupling
  4. rated input speed:a thousand-2500r/min
  5. centre distance:180mm
  6. reduction ratios and corresponding transmission capability:

ratio trans.capacity kw/(r·min-1)(HP/r·min-1)
1.5:1 .one hundred .136
two:1 .100 .136
2.5:1 .one hundred .136
3:1 .090 .122
three.5:1 .080 .103
Astern .085 .a hundred and fifteen

  1. rotation course of enter shaft(considered from output end):

counter-clockwise.if clockwise path is required,remember to position ot out in buy

  1. rotation direction of output shaft in “ china small maritime hydraulic gearbox boat utilised for diesel motor D300A in stock ahead” position:contrary to that of enter shafy
  2. rated propeller thrust:twenty five,000N
  3. mechnical performance:≥96%
  4. time for reversing:≤8S(adjustable)
  5. oil strain:1.3-1.6Mpa(thirteen.2-16.3kgf/CM2)
  6. lubricating oil grade:HC-11 HQ-ten or SAE30
  7. lubricating oil capacity:≈7L
  8. max.oil temperature:≤ LSG Collection harmonic push transmission gearbox for Energy exploitation 80°C
  9. usage of cooling water:≥1.5t/h
  10. permissible angle of inclination:longitudinal 10° transverse 15°
  11. overhaul:10,000h

The Areas of a Gearbox

There are a lot of areas of a Gearbox, and this write-up will assist you realize its features and elements. Discover about its maintenance and proper treatment, and you may be on your way to restoring your vehicle. The complexity of a Gearbox also tends to make it straightforward to make errors. Understand about its features and components so that you’ll be ready to make the very best options feasible. Read through on to learn much more. Then, get your vehicle prepared for winter!


Gearboxes are totally built-in mechanical parts that consist of a series of gears. They also incorporate shafts, bearings, and a flange to mount a motor. The phrases gearhead and gearbox are not typically utilised interchangeably in the motion industry, but they are typically synonymous. Gearheads are open up gearing assemblies that are installed in a device frame. Some newer patterns, this sort of as battery-driven cellular units, need tighter integration.
The electricity losses in a gearbox can be divided into no-load and load-dependent losses. The no-load losses originate in the equipment pair and the bearings and are proportional to the ratio of shaft velocity and torque. The latter is a function of the coefficient of friction and pace. The no-load losses are the most significant, given that they depict the greatest proportion of the complete reduction. This is since they improve with pace.
Temperature measurement is yet another critical preventive upkeep follow. The warmth produced by the gearbox can harm components. Large-temperature oil degrades speedily at large temperatures, which is why the sump oil temperature must be monitored periodically. The greatest temperature for R&O mineral oils is 93degC. Nonetheless, if the sump oil temperature is a lot more than 200degF, it can lead to seal injury, gear and bearing wear, and premature failure of the gearbox.
No matter of its size, the gearbox is a critical element of a car’s drivetrain. No matter whether the vehicle is a sports auto, a luxury car, or a farm tractor, the gearbox is an important component of the car. There are two primary kinds of gearbox: regular and precision. Each and every has its personal positive aspects and disadvantages. The most important thing to consider when choosing a gearbox is the torque output.
The major shaft and the clutch shaft are the two significant components of a gearbox. The major shaft operates at engine speed and the countershaft may possibly be at a decrease speed. In addition to the principal shaft, the clutch shaft has a bearing. The gear ratio determines the quantity of torque that can be transferred in between the countershaft and the main shaft. The drive shaft also has one more name: the propeller shaft.
The gears, shafts, and hub/shaft connection are developed in accordance to stamina design requirements. Based on the software, every single element need to be ready to stand up to the standard stresses that the program will expertise. Frequently, the minimal speed range is ten to 20 m/s. Nevertheless, this range can differ amongst various transmissions. Typically, the gears and shafts in a gearbox need to have an endurance limit that is significantly less than that restrict.
The bearings in a gearbox are considered dress in parts. Even though they need to be replaced when they put on down, they can be stored in service considerably for a longer time than their supposed L10 daily life. Using predictive maintenance, companies can establish when to replace the bearing just before it damages the gears and other elements. For a gearbox to purpose correctly, it have to have all the factors shown above. And the clutch, which enables the transmission of torque, is regarded as the most crucial component.


A gearbox is a totally integrated mechanical ingredient that is composed of mating gears. It is enclosed in a housing that properties the shafts, bearings, and flange for motor mounting. The purpose of a gearbox is to enhance torque and alter the velocity of an engine by connecting the two rotating shafts collectively. A gearbox is normally produced up of several gears that are linked with each other utilizing couplings, belts, chains, or hollow shaft connections. When electricity and torque are held continuous, speed and torque are inversely proportional. The pace of a gearbox is established by the ratio of the gears that are engaged to transmit power.
The gear ratios in a gearbox are the variety of measures a motor can consider to convert torque into horsepower. The sum of torque essential at the wheels depends on the functioning problems. A motor vehicle demands a lot more torque than its peak torque when it is moving from a standstill. As a result, the initial gear ratio is utilized to boost torque and transfer the automobile forward. To go up a gradient, much more torque is essential. To keep momentum, the intermediate gear ratio is used.
As steel-to-metal get in touch with is a common trigger of gearbox failure, it is crucial to keep an eye on the issue of these factors carefully. The major target of the proactive collection of assessments is irregular put on and contamination, while the preventative exams target on oil situation and additive depletion. The AN and ferrous density checks 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.


Day-to-day upkeep is a essential aspect of the daily life cycle of a gearbox. For the duration of upkeep, you should examine all gearbox relationship areas. Any unfastened or ruined link element ought to be tightened quickly. Oil can be analyzed using an infrared thermometer and particle counters, spectrometric investigation, or ferrography. You ought to verify for excessive use and tear, cracks, and oil leaks. If any of these elements are unsuccessful, you ought to change them as shortly as feasible.
Correct evaluation of failure styles is a necessary element of any preventative maintenance plan. This examination will assist identify the root cause of gearbox failures, as properly as plan for potential preventative maintenance. By correctly arranging preventative routine maintenance, you can avoid the cost and inconvenience of fixing or changing a gearbox prematurely. You can even outsource gearbox servicing to a organization whose specialists are knowledgeable in this subject. The outcomes of the evaluation will help you develop a more successful preventative upkeep plan.
It is essential to verify the problem of the gearbox oil periodically. The oil should be changed in accordance to its temperature and the hrs of operation. The temperature is a significant determinant of the frequency of oil adjustments. Increased temperatures require more frequent changes, and the degree of safety from humidity and h2o decreases by 75%. At elevated temperatures, the oil’s molecular framework breaks down a lot more speedily, inhibiting the formation of a protecting film.
Fortunately, the equipment market has developed progressive systems and solutions that can aid plant operators minimize their downtime and make sure optimum functionality from their industrial gears. Here are ten methods to ensure that your gearbox carries on to provide its goal. When you are getting ready for maintenance, constantly hold in mind the adhering to tips:
Regular vibration analysis is a crucial portion of gearbox servicing. Increased vibration alerts impending problems. Visually examine the internal gears for symptoms of spiraling and pitting. You can use engineers’ blue to check the contact sample of equipment enamel. If there is a misalignment, bearings or housings are worn and need substitution. Also make sure the breathers continue being cleanse. In dirty purposes, this is a lot more challenging to do.
Proper lubrication is one more important aspect in the existence of gearboxes. Proper lubrication stops failure. The oil must be totally free of international components and have the correct sum of movement. Correct lubricant variety depends on the type of equipment, reduction ratio, and input energy. In addition to oil degree, the lubricant need to be regulated for the dimensions and condition of gears. If not, the lubricant should be altered.
Absence of suitable lubrication reduces the toughness of other gears. Inappropriate upkeep reduces the existence of the transmission. Whether or not the transmission is overloaded or undersized, abnormal vibration can harm the gear. If it is not properly lubricated, it can be broken beyond repair. Then, the require for alternative gears could occur. Nonetheless, it is not a time to waste a whole lot of income and time on repairs.

China Custom marine gearbox 120C  with Great qualityChina Custom marine gearbox 120C  with Great quality