China Hot selling Twin Screw Helical Gear Box for Crane with Great quality

Item Description

Company  Profiles

-We are a major gear motor manufacturer
ZHangZhoug Xihu (West Lake) Dis.hai Reducer is a top maker of equipment motor and gearbox.
Considering that 1991, we have specialised in production a vast range of equipment motor and gear box including:


  • helical gear motor
  • helical bevel gear motor
  • parallel shaft helical gear motor
  • helical worm gear motor
  • hoist generate
  • heavy-responsibility helical gearbox
  • hefty-obligation helical bevel gearbox
  • gear motor for auto parking method
  • sprial bevel gearbox

Product Description

QYJ series gear box could be divided into QYJH parallel shaft and QYJB 90° shaft, from 1 phase to 4 levels.

Mounting place: horizontal, vertical and upright mounting.

Specialized information:

Equipment ratio:      1.25 ~ 450

Rated output torque:  20 ~ 500 KNm

Motor energy:     1.1 ~ 200 KW

Merchandise Show

Item Specification

Package deal

Plastic bag + wooden carton



Q: Can you print other shades?
Sure. Customized color can be printed on the gear motor in accordance to your requirements.
Q: Is that manufacturing facility value?
Of course. We CZPT you all charges are based on manufacturing unit.
Q:  What is the lifestyle span? what is the promise
The lifespan of equipment motor can achieve 5-20 years depending on different doing work circumstances .The ensure time is 1 calendar year soon after shipping and delivery.
Q: What documents are accessible?
A complete range files such as structural drawings, packing listing, installation manual and relative certificates can be presented. Furthermore, customs declaration is presented. We provide 1-quit support for you. 
Q: Is it CZPT to personalized?
yes, we could re-design and make the gear motor as your demands if the amount is large.

What Is a Gearbox?

There are many variables to think about when selecting a gearbox. Backlash, for case in point, is a thought, as it is the angle at which the output shaft can rotate with no the enter shaft relocating. While this isn’t required in programs with no load reversals, it is important for precision purposes involving load reversals. Examples of these apps include automation and robotics. If backlash is a problem, you may possibly want to search at other elements, this kind of as the amount of enamel in each and every gear.

Purpose of a gearbox

A gearbox is a mechanical device that consists of a chain or set of gears. The gears are mounted on a shaft and are supported by rolling element bearings. These units alter the pace or torque of the device they are utilized in. Gearboxes can be utilised for a broad variety of applications. Below are some examples of how gearboxes operate. Read through on to find out far more about the gears that make up a gearbox.
Regardless of the kind of transmission, most gearboxes are geared up with a secondary equipment and a main one particular. Whilst the equipment ratios are the very same for equally the principal and secondary transmission, the gearboxes could differ in size and effectiveness. Higher-functionality racing autos typically use a gearbox with two eco-friendly and 1 blue gear. Gearboxes are usually mounted in the front or rear of the engine.
The major purpose of a gearbox is to transfer torque from a single shaft to another. The ratio of the driving gear’s teeth to the obtaining member determines how significantly torque is transmitted. A large equipment ratio will cause the principal shaft to revolve at a slower velocity and have a high torque when compared to its counter shaft. Conversely, a reduced equipment ratio will enable the vehicle to flip at a reduced pace and produce a reduce torque.
A conventional gearbox has input and output gears. The countershaft is linked to a universal shaft. The input and output gears are arranged to match the pace and torque of each and every other. The equipment ratio decides how quick a auto can go and how considerably torque it can make. Most traditional transmissions use 4 gear ratios, with a single reverse equipment. Some have two shafts and 3 inputs. Nonetheless, if the equipment ratios are substantial, the engine will encounter a decline of torque.
In the study of gearbox efficiency, a huge volume of knowledge has been collected. A highly bold segmentation approach has yielded nearly 20,000 characteristic vectors. These final results are the most thorough and thorough of all the available data. This analysis has a twin curse – the 1st is the huge volume of knowledge collected for the objective of characterization, even though the next is the large dimensionality. The latter is a complication that occurs when the experimental gearbox is not developed to perform nicely.


The primary perform of a gearhead is to multiply a instant of power and generate a mechanical benefit. Nevertheless, backlash can result in a variety of issues for the method, like impaired positioning accuracy and lowered general overall performance. A zero backlash gearbox can get rid of motion losses brought on by backlash and enhance all round method functionality. Here are some common difficulties associated with backlash in gearheads and how to correct them. After you understand how to fix gearbox backlash, you are going to be capable to design a equipment that satisfies your needs.
To minimize gearbox backlash, several designers attempt to reduce the centre length of the gears. This removes area for lubrication and encourages extreme tooth mesh, which qualified prospects to premature mesh failure. To reduce gearbox backlash, a gear maker might independent the two parts of the equipment and change the mesh centre length among them. To do this, rotate one equipment with regard to the set gear, whilst modifying the other gear’s efficient tooth thickness.
A number of production processes could introduce errors, and decreasing tooth thickness will reduce this mistake. Gears with bevel teeth are a primary case in point of this. This kind of gear features a little amount of teeth in comparison to its mating gear. In addition to minimizing tooth thickness, bevel gears also lessen backlash. While bevel gears have less enamel than their mating gear, all of their backlash allowance is applied to the bigger equipment.
A gear’s backlash can influence the performance of a gearbox. In an perfect equipment, the backlash is zero. But if there is also considerably, backlash can lead to damage to the gears and cause it to malfunction. For that reason, the goal of gearbox backlash is to lessen this issue. Nonetheless, this might need the use of a micrometer. To establish how much gearbox backlash you need to have, you can use a dial gauge or feeler gauge.
If you’ve been hunting for a way to lessen backlash, a gearbox’s backlash may possibly be the reply. Nevertheless, backlash is not a revolt from the producer. It is an error in movement that takes place in a natural way in equipment techniques that modify course. If it is still left unaccounted for, it can lead to significant equipment degradation and even compromise the complete method. In this post, we will describe how backlash affects gears and how it affects the functionality of a gearbox.


The design of gearboxes consists of a variety of factors, including the variety of substance utilised, electrical power specifications, velocity and reduction ratio, and the application for which the device is meant. The procedure of planning a gearbox generally commences with a description of the device or gearbox and its intended use. Other crucial parameters to take into account throughout gearbox style incorporate the dimension and fat of the gear, its overall gear ratio and number of reductions, as nicely as the lubrication strategies employed.
For the duration of the design and style procedure, the consumer and provider will participate in different design critiques. These incorporate idea or first design review, producing layout validation, critical design overview, and last style review. The buyer may also initiate the process by initiating a DFMEA. After receiving the initial style approval, the design and style will go by way of many iterations just before the finalized style is frozen. In some instances, the buyer will need a DFMEA of the gearbox.
The speed increaser gearboxes also need unique design factors. These gearboxes typically function at high speeds, causing troubles with equipment dynamics. In addition, the large speeds of the device boost frictional and drag forces. A suitable design and style of this ingredient must minimize the influence of these forces. To solve these difficulties, a gearbox ought to incorporate a brake method. In some circumstances, an exterior pressure may also improve frictional forces.
A variety of sorts of gear arrangements are utilised in gearboxes. The style of the enamel of the gears plays a significant function in defining the kind of gear arrangement in the gearbox. Spur gear is an illustration of a equipment arrangement, which has enamel that run parallel to the axis of rotation. These gears supply large gear ratios and are frequently utilized in several stages. So, it is achievable to create a gearbox that fulfills the demands of your application.
The layout of gearboxes is the most complicated procedure in the engineering method. These sophisticated devices are made of numerous kinds of gears and are mounted on shafts. They are supported by rolling aspect bearings and are utilized for a selection of programs. In standard, a gearbox is used to lessen velocity and torque and alter path. Gearboxes are commonly utilized in motor autos, but can also be identified in pedal bicycles and fastened devices.


There are a number of key segments in the gearbox industry, such as industrial, mining, and automotive. Gearbox makers are required to realize the software and user industries to design a gearbox that meets their certain demands. Fundamental information of metallurgy is needed. Multinational firms also supply gearbox answers for the power technology industry, shipping and delivery industry, and automotive industries. To make their merchandise more aggressive, they need to have to target on item innovation, geographical growth, and client retention.
The CZPT Team began as a tiny firm in 1976. Given that then, it has grow to be a global reference in mechanical transmissions. Its creation range involves gears, reduction gearboxes, and geared motors. The firm was the first in Italy to attain ISO certification, and it continues to develop into a single of the world’s top makers of manufacturing gearboxes. As the sector evolves, CZPT focuses on study and growth to develop far better goods.
The agriculture market uses gearboxes to implement a selection of processes. They are utilized in tractors, pumps, and agricultural equipment. The automotive sector employs gears in cars, but they are also discovered in mining and tea processing machinery. Industrial gearboxes also engage in an essential position in feed and pace drives. The gearbox business has a varied portfolio of companies and suppliers. Right here are some examples of gearboxes:
Gearboxes are intricate pieces of products. They have to be employed properly to optimize efficiency and increase their lifespan. Makers employ sophisticated technology and rigid good quality management processes to guarantee their goods meet the greatest expectations. In addition to manufacturing precision and reliability, gearbox producers guarantee that their items are secure for use in the generation of industrial equipment. They are also utilized in workplace machines and health care equipment. However, the automotive gearbox market is getting to be more and more aggressive.

China Hot selling Twin Screw Helical Gear Box for Crane     with Great qualityChina Hot selling Twin Screw Helical Gear Box for Crane     with Great quality