wind power bearing Miniature Bearings Introduction

Refers to metric series miniature bearings, diameter less than 9mm; Inch Series, diameter less than 9.525mm in all kinds of bearings! The main materials are carbon steel, bearing steel, stainless steel, plastics, ceramics, etc., which can be done a minimum internal diameter of 0.6mm, general internal diameter of 1mm more.

2 Features

In the ultra-small aperture miniature bearings, agricultural bearings‍ deep groove ball bearing type miniature metric of 68 series, 69 series, 60 series, Inch R series of six kinds, on this basis, can be divided into steel dust band ZZ cover bearing series, with RS rubber seals series of miniature bearings, Teflon bearing seals series and with flange wall series and so on.

Three main purposes

Miniature Bearings for all types of industrial equipment in the field, small rotary motor high-speed low-noise, such as:

Office equipment, micro-motors, instrumentation, laser engraving, small clocks, soft drive, pressure rotor, dental drills, hard drive motors, stepper motors, VCR drum, toys, models, slewing bearing‍ computer cooling fan, cash registers, fax machines etc. related fields.

Miniature Bearing Failure

About 40% of the failures miniature ball bearings are contaminated by dust, dirt, debris and corrosion. Pollution is usually caused by improper use and poor use of the environment, it can also cause problems torque and noise. Miniature bearing failure by the environment and pollution generated can be prevented, but by simple visual observation can determine the cause of such failure. As long as the reasonable use and install, miniature bearings erosion is easy to avoid. Erosion is characterized in miniature bearing ring raceway indentations left by shock loads or incorrect installation produced. Erosion usually occurs when the load exceeds the material yield limit. If not properly installed so Other bearing‍ that the load across a miniature bearing ring will produce erosion. Also miniature bearing ring indentation on noise, vibration, and additional torque.

wheel bearing Wheel bearing (hub bearing)

Wheel bearing (hub bearing) primary role is to load and for the rotation of the hub to provide accurate guidance, both axial load and radial load, is a very important component. wind power bearing‍ Traditional automotive wheel bearing is composed of two tapered roller bearings or ball bearing combination, bearing installation, oiled, sealed and adjust the clearance is carried out in the car on the production line. This structure makes it difficult in a car assembly plant, high cost, poor reliability, and maintenance car maintenance, but also the need for bearing cleaning, oiling and adjustment. Developed on the basis of the hub bearing unit is the standard angular contact ball bearings and tapered roller bearings on, it will be two sets of bearings as a whole, with good assembly performance can be omitted clearance adjustment, light weight, Full complement cylindrical roller bearings‍ compact structure, load capacity large, sealed bearings can advance into the grease, hub seals and maintenance advantages omitted from the outside wheel, has been widely used in cars, and in the truck also has a tendency to gradually expand the application.

LYHY deck crane bearing Dual topper derrick boom means and Hebert

Improved boom device was later arise. Dual topper derrick boom device is operated by a single lever improvements made, the device only cargo runners and about two separate topper. Crane boom by a winch and two topping winch to manipulate, easy to operate, high working efficiency. Hebert derrick Triple row roller slewing bearing‍ boom device by double-lever operation improvements made​​, the device has a cargo winches, extremely heavy winch cable and lanyard. With the winch boom may soon put in any position. While also pointing put cargo lifting and fall within the working radius of the boom to improve handling efficiency. This is an important step towards fully automated cargo handling forward.

Deck crane

Set machinery in the ship deck crane bearing‍. This compact crane structure, the ship has more deck area available, less impact on the bridge upstairs sight. Deck cranes easy operation, high working efficiency, and flexibility, before the job is no tedious preparatory work widely.

Deck cranes bearing ‍commonly used fixed rotating cranes, mobile cranes and gantry cranes rotation. Transmission power transmission and electricity - two hydraulic Thin section bearings‍ drive.

Fixed rotating crane

This crane most widely used, can be used alone or in pairs in the starboard job. Weight is generally 3 to 5 tons. In the multi-purpose boat, requires a single crane can lift a 20 ft container, twin-lift can lift 40 feet container (30 tons), its starting weight of up to 25 to 30 tons.‍

LYHY deck crane bearing Crossed roller bearing assembly points and quality measures

Thin-walled cross roller bearings according to its structure, the assembly stage needs to grasp the bearing clearance control, rotary accuracy and stability of 3 points, cross roller bearings belong to special bearings with high precision, is mainly used in CNC machine, robot arm, as well as medical and Full complement cylindrical roller bearing‍ military equipment, which are double row roller in a 45 degree tilt angle roll cross distribution channel, can maintain high rigidity on the roller and raceway contact line, but also because of a 45 degree tilt angle raceway can be uniformly load of axial and radial bearing, perfect overturning or torsional moment; in addition, cross roller bearings with negative clearance design and pre tight, can high rigidity bearing guarantee (compared with traditional models, rigid increase 3~4 times) and high precision, cross roller bearings precision Luoyang Boying bearing is in P5 above, basic accuracy of P4, P2, belongs to high precision bearing:

1 crossed roller bearing clearance control bearing slewing bearing‍ production processes in the two process to ensure the bearing clearance, a bearing end grinding, roller bearing sleeve so need beforehand medium size of test equipment, test equipment with rotary bearing is smooth, the negative clearance has a slight pressing feeling, can ensure the roller and the raceway with clearance at around 0.01mm, preparing for the next assembly; second procedures for fitting test equipment, the bearing does not install the isolation block or holder of test equipment, there are 5 groups of roller for choice, according to the assembly member feel and a dial indicator measuring judgment clearance is required, if don't be by replacing the roller and raceway grinding to finish the match, this method can also be used in the production of the turntable bearing YRT, is commonly used in bearing production method, just cross roller bearings are precision bearing, clearance requires precise control;

2 rotary accuracy and stability control; through production practice experience for many years we know, rotary precision cross roller bearings and YRT turntable bearing mainly, and the single direction thrust ball bearing‍ raceway quality and deformation, therefore, all bearing before shipment is half finished product assembly, prevent long after placing deformation, and thin-walled cross roller bearings in the grinding time by tempering 2 times treatment, ensure the material stress release caused by deformation of the risk to a minimum; the actual assembly of a rotary impeded, the bearing cleaning, check whether there is damage raceway, then the accuracy of roundness and flatness.

Measuring, Cengcengbaguan to ensure the bearing quality.‍

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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