The relationship between planetary gear backlash and return error: The planetary gear reducer is composed of multiple planetary gears, the inner ring gear of the sun gear and the transmission shaft, and the return error of each planetary gear is converted into a sun gear, and then calculated uniformly.The calculation of the return error of the planetary reducer can be summarized as two comprehensive calculations: 1. The comprehensive formula of the return error of the planetary gear: when the sun gear is used as the output, the ring gear is fixed, and the planetary gear is used as the output, the return error is generally converted into the return of the sun gear Error, after calculating the return stroke error of the sun gear, consider the temperature rise and torque deformation of the shaft.2. The comprehensive formula of the return error of the planetary gear transmission chain: the return error problem is actually the sum of the return errors of the planetary gears at all levels. In the calculation process, the actual situation of the planetary gears at all levels should be considered. According to its inherent characteristic parameters , the calculation resource allocation provides the corresponding correction model coefficients, and the planetary gears at all levels are adjusted through continuous correction coefficients Read More

How to maintain a long service life of the planetary reducer?This is a problem for every planetary reducer user.It is not difficult to realize its value and long-term service life by strictly following the use requirements of the reducer and carefully maintaining it.The debugging time of the reducer should not be less than two hours.The standard of normal operation is smooth operation, no vibration, no noise, no leakage, no impact.If there is any abnormality, it should be cleaned up in time.After the reducer is aligned according to the market demand, a more ideal transmission system effect and a longer service life can be obtained.When the reducer is installed, special attention must be paid to the alignment of the transmission center axis, and the alignment error must not exceed the use compensation of the coupling used by the reducer.There are many types of couplings that can be selected for the reducer, but do not use steel fixed couplings. The installation of this type of coupling is difficult. Once the installation is not suitable, the load will increase and the bearing will be easily damaged.The output shaft may even break. Read More

WGT product catalogue, reducer product manual, gearbox sample; WGT 18 product catalogs released in Chinese and English Read More

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The helical planetary reducer can be regarded as a set of cylindrical gears with misaligned thin gears, so the contact points of each part are located at different parts of the tooth profile, thereby producing the effect of compensating the error of each thin gear.The elasticity of the teeth is very efficient, so a tooth with an error of less than 10 mm can average out, and under load, run as smoothly as a tooth with an error of 1 mm.Since at a given moment approximately half of the time (assuming a certain degree of overlap of 1.5) there will be two teeth, this has an added benefit in terms of strength.Therefore, the stress can be based on 1.5 times the tooth width instead of one tooth width.The main disadvantage of spur planetary gear units is that they generate vibration.Whether due to design, manufacturing, or deformation, some variation in the involute profile may occur simultaneously along the entire tooth flank.This will result in periodic one-shot firing of each tooth, which is usually quite intense.The resulting vibrations cause large loads on the gears and noise Read More

Technical requirements for factory inspection of planetary reducer: 1. The outer surface of the reducer should be flat and smooth, and the fasteners must not be loose.2. The reducer is sealed, and the joints must not leak oil.3. When turning the input shaft of the reducer by hand, it must be relaxed and stable without jamming.4. The axial working clearance should meet the regulations.Test method of planetary reducer: 1. After the reducer has passed the test, a load test should be carried out.2. At the rated speed, the reducer is loaded step by step according to 25%, 50%, 75%, 100%, 110%, and 125% of its rated torque.3. For reducers that operate in both directions or do not specify the direction of rotation, positive and negative tests should be carried out respectively.4. In the thermal power load test, the temperature of the reducer oil pool is stable for two hours.Its temperature should meet the requirements, each seal, joint, Read More