wind power bearing bearing temperature

The bearing temperature are the main reason:

The first: whether the lubricating oil quality deterioration? If the viscosity of lubricating oil can also result in INA bearing temperature Slewing drives‍ rise

Second: bearing assembly if too tight, the gap will lead to inadequate flange bearing temperature rise;

Third: bearing assembly too tight will result in bearing temperature rise;

Fourth: Race rotation on the shaft or shell will result in bearing temperature rise;

Fifth: the bearing load is too large will result in bearing temperature rise;

Sixth: if the bearing cage or a rolling Double Row Ball Slewing Bearing‍ body broken words, will result in bearing temperature rise.

wheel bearing Classification, bearing

Basics - bearing classification / composed / selection / installation

Sliding bearing: contact (numerous points of contact); suitable for very high speed, very low (load); shaft is suspended, Double Row Ball Slewing Bearing‍ the oil is very important.

Rolling bearings: ball bearing: point contact: light load speed;

Classification, bearing

Sliding bearing: contact (numerous points of contact); suitable for very high speed, very low (load); shaft is suspended, the oil is very important.

Rolling bearings: ball bearing: point contact: light load speed;

Roller bearings: linear contact: heavy-duty high-speed;

Two, bearing

The outer ring, inner ring, Full complement cylindrical roller bearings‍ rolling body cage,: bearing retainer

Cage effect:

1, to prevent direct contact between the rolling body to reduce friction and heat generation;

2, the rolling body guide;

3, to provide lubrication space;

In 4, install or Uninstall can avoid a rolling body powder.‍

deck crane bearing Cage effect

the role of deck crane bearing

1, to support the shaft and parts on the shaft, to keep the rotating precision of shaft;

2, to reduce friction during rotation and wear;

Four, slim ball bearing‍ bearing selection principle

1, ball bearings than the limit speed of roller bearing high, priority should be given to the selection of ball bearing;

2, at high speed to the selection of bearing, ultra light, super light and light series (inner diameter and outer diameter, the smaller, the rolling body is light and small, centrifugal inertial force is small);

3, cage materials has a great influence on bearing speed, solid cage than stamping cage to allow higher speed;

The speed limit is 4, thrust bearing is very low, when working at high speed, if the axial load is not very big, can use the angular contact ball bearings to Taper roller bearings‍ bear pure axial force;

5, if the speed exceeds the bearing sample, can be used to improve the tolerance level, increasing the clearance, the circulating cooling method.

deck crane.‍

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wind power bearing angular contact bearings

At the same time bear radial load and axial load case, supporting often use mounting angular contact bearings and tapered roller bearings are. Angular contact bearings installed in pairs arranged in one of three ways. Two bearing outer ring width end Full complement cylindrical roller bearings‍ relative installation called back-to-back mounting method. The two support force on bearing span beyond. This arrangement for supporting span large, good steel shaft cantilever, axial thermal elongation, the outer ring is disengaged from the inner trend, so the shaft without jamming, so widely used. But if the pre installed in the shaft when heated, pre tension will be reduced. Two bearing outer ring narrow end relative installation called face to face mounting. The force point two support falls on the supporting span. This arrangement has the advantages of simple structure, installation, debugging convenient and therefore are more widely used, mainly for short axis and the temperature rise is not high, but it should be noted that we must have a spare clearance. The axial clearance also shoulds not be too big, will reduce the running accuracy of the shaft. When slewing rings‍ the axial load is larger, the need for multiple bearings and bearing, the bearing outer ring width is often used, narrow face relative installation series. Effect of the bearing force are located on the same side of the bearing are arranged in the same direction is also called series. The arrangement of this to the attention of the structure and manufacture to ensure each bearing can be as much as possible uniform load.

The machine is in operation, the general spindle or drive shaft temperature higher than the adjacent parts of the temperature, so the shaft will heat up elongation. In order to keep the shaft to rotate flexibly, in supporting structure design, while meeting the axial positioning accuracy requirements, but also consider the axial heat free expansion requirements. Axial positioning and axial expansion way is the corresponding.

Adjustment of the bearing clearance is to control the running accuracy of the shaft. The axial position adjusting shaft is in order to meet the specific requirements of linear motion bearings‍ some of the gear transmission. For example: in the worm, worm axis must fall in the middle plane worm gear to ensure the correct engagement, so the worm shaft can adjust its position in the axial direction. The bevel gear drive, pitch cone cone vertex two bevel gear must coincide, which required two bevel gear shaft can be axially adjusted.

wheel bearing Bearing selection issues to consider

In the choice of the general bearing support to those problems? You can try the following four steps to consider:

How to define the axis position, Angular contact ball bearings‍ including radial and axial position is the first thing to consider. General axis adopts double support structure, the radial position of the shaft joint is defined by the two support, centripetal or angular contact bearing supports radial location of each Ying Youqi effect. Axial displacement axial displacement axial position may be composed of two supporting the limit in one direction can be limited in two directions by a bearing, in general, taper roller bearing‍ the axial positioning in different ways can get different running accuracy. Therefore, the design of supporting structure should be based on the axis of the operation accuracy and working conditions, practical scheme of axial positioning.

deck crane bearing Axial bearing

Ring chain electric hoist dustproof and waterproof

Electric chain hoist is also called electric chain hoist, hoist is one of the indispensable tool of crane.

Electric hoist axial bearing‍ chain types are: imported electric chain hoist, super low electric chain hoist, chain electric hoist lifting weight is 0.5t~10t. Electric chain hoist chain is equipped with a chain, the chain electric hoist looks neat appearance, anti rust oil is also equipped with a belt, so as not to use electric chain hoist chain in the chain bag, to prevent Liner Motion Bearings‍ rusting of the chain. To extend the service life of the electric hoist.

Ring chain electric hoist is firm and durable, waterproof and dustproof performance is good, the compact forming a small aluminum. But electric chain hoist equipment in order to ensure the safety and own the development of the friction clutch and the upper and lower limit switches, the use of simple and convenient. Electric hoist is also provided with a leakage protection devices and overload protection device, if the maximum gravity is lifting more than electric hoist can bear, electric hoist will automatically worm gear speed reducer‍ cut off power, to avoid the accident which occurs due to overload, not causing harm to use.

wind power bearing bearing noise caused

Use of the bearing noise caused by improper solutions

1, the bearing dust

To solve the dust agricultural bearings‍ caused by noise method bearing: cleaning method can improve the bearing, wind power bearing, shaft in the device, hole as well as the matching parts all stern Qing Shen clean; two Su light slip foreign agent within three to improve the bearing; seal; four avoid the use of information is not pure or embedded foreign body plastic stick frame.

2, bearing a scar.

To solve the scar caused by the noise of the method of bearing: a device not knocking bearing, the bearing and shaft assembly after Crossed Roller Slewing Bearing‍ loading to avoid bearing installed cable bearing seat; avoided shock vibration bearing corrosion and transport two inventory; three using the high viscosity of grease.

3, in case of improper bearing lubricant

To solve the lubricant due to improper noise method: improper bearing lubricant can be divided into three classes: the wrong lubricant; two lubricant lack; three Thin section bearings‍ lubricant aging induration. To choose the appropriate lubricant, lubricant according to the lubrication to add, to regularly replace the lubricant.