News

• 19

  2021.08

  High Speed Bearing Installation Method

  The high speed, medium speed and low speed of the bearing are determined not by the speed but by the linear speed.Small bearings often return tens of thousands of revolutions is not a high-speed shaft answer, large bearings hundreds of revolutions are high-speed bearings. The general high speed bearing refers to the bearing with a speed of 60 meters per second.In plain bearings, hydrostatic bearings, hydrodynamic beari...
• 16

  2021.08

  How to install longer service life

  Thrust tapered roller bearings can only bear one-way axial load and can limit the one-way axial displacement of the bearing, so they can be used as one-way axial positioning. Compared with thrust cylindrical roller bearings, the bearing capacity is large and the relative sliding is small, but the limit speed is low. Matching method: interference fit of shaft and bearing box with shaft ring and seat ringInstallation met...
• 12

  2021.08

  Insulated Bearings Should Be Used in What Circumstances

  Insulated bearing refers to the general name that can block the current through and the bearing itself has insulating performance.Its insulation performance is usually a special process in the bearing outer ring or inner ring coated with a layer of insulating material, or its rolling body is made of ceramic to ensure.The name of electrical insulation bearing is international bearing code.Outer ring insulated bearing code VL0...
• 09

  2021.08

  What's difference of ball bearing and roller bearing ?

  Rolling-element, anti-friction bearings, either ball- or roller-type, provide a mechanical means of countering radial and axial loads in rotating and reciprocating shafts. This article will briefly describe both types, then cite some examples where one type might be selected over the other. To learn more about the different bearing types, consult our ZZ bearings buying guide. Ball Bearings Ball bearings typic...
• 05

  2021.08

  How to do Measure Before Bearing Installations

  Outside diameter size, inside diameter size, height, these are the basic three dimensions to be tested.Generally use caliper and micrometer, or clamp gauge block to dial indicator, can be accurate.The inside diameter and outside diameter of the bearing can be runout with the instrument.The main purpose of the instrument is to detect the accuracy grade of the bearing. When installing rolling bearings, the dial gauge s...
• 02

  2021.08

  The installation methods of Spherical roller bearing

  Spherical roller bearing press roller cross section shape is divided into symmetric form spherical roller and asymmetric form spherical roller two kinds of different structure, asymmetric spherical roller bearings belong to the early products, primarily for the host service, a new design when the host is rarely choose symmetric spherical roller bearing, the internal structure after comprehensive improvement design and parame...
• 29

  2021.07

  Three Ways of Roller Bearing Cage Guide

  Cage (namely bearing cage, also known as bearing retainer), refers to the part of the bearing that partially wraps all or part of the rolling body, and moves with it, to isolate the rolling body, and usually guide the rolling body and keep it in the bearing. When rolling bearings are working, bearing heating and wear are caused by sliding friction. Especially under high temperature operation conditions, the effect of i...
• 28

  2021.07

  Why Cylindrical Roller Bearings Only Bear Radial Loads

  ZZ Cylindrical roller bearings are generally only used to bear radial loads. Only single-row bearings with ribs on the inner and outer rings can bear smaller directional axial loads or larger gap axial loads. What is bearing load? Bearing load is the load received by the bearing during use, including lateral load and longitudinal load. Click here for more details about ZZ 23120-2CS . ...
• 26

  2021.07

  How do spherical roller bearings work

  How do spherical roller bearings work ? Spherical roller bearing has two columns symmetric spherical roller type, there is a share of the spherical raceway outer ring, inner ring has two the tilt Angle of a race to the bearing axis, has a good heart performance, when the axial stress bending or install different heart bearings can still be used normally, so vary with different bearing size series, generally allowed b...
• 22

  2021.07

  The Load Analysis of Cylindrical Roller Bearings

  Bearing in use is to support the rotating shaft, the shaft may be subjected to radial or axial load, these loads will act on the bearing, such as the helical gear shaft on the reducer, in the transmission process there will be axial load, then the bearing will be subjected to axial load.Cylindrical roller bearings are generally only used to bear radial load, only when the inner and outer rings of the single-row bearing with ...
• 21

  2021.07

  Analysis of Seal Structure of Deep Groove Ball Bearing

  Deep groove ball bearings have a variety of sealing structures. According to the different sealing materials, they are mainly divided into two types: rubber sealing ring and dust cover (standard iron cover): according to different seals, they can be divided into contact sealing and non-contacting. seal. For sealed deep groove ball bearings such as motorcycles, home appliances motors, luxury ceiling fans, etc., the basic seal...
• 19

  2021.07

  The Meaning for Clearance for Spherical Roller Bearings

  The clearance of spherical roller bearings refers to the maximum distance that the inner and outer rings of the bearing can move without load, that is, when the bearing is not assembled in the shaft or bearing box, the inner ring or the outer ring is fixed. The amount of movement when moving the unfixed side in the radial or axial direction. According to its moving direction, the radial clearance is called radial clearance, ...
• 15

  2021.07

  Measurement Before Bearing Installations

  When installing rolling bearings, the dial gauge should be fixed on the end face of the box shell first, so that the top of the contact head of the meter can migrate the transfer bearing on the raceway of the bearing shaft ring. While migrating the transfer, check the dial gauge pointer. If the pointer is swaying, it is clear that the shaft ring and the middle line of the shaft are not vertical.If the shell hole is deeper, y...
• 14

  2021.07

  Heating Phenomenon Of Tilting Pad Bearing

  First. Tilting pad bearing structure and working principle Tilting pad bearing is composed of five arc-shaped pads, the upper half bearing is 3 tilting pads, the lower half bearing is two tilting pads, the pads can be freely tilted on the fulcrum, and the pads can swing freely when working , A multi-oil wedge is formed around the journal. The lubricating oil of the bearing enters the annular channel of the bearing ...
• 08

  2021.07

  The Reason Why Self-aligning Roller Bearing Drop Roller

  First of all we may know the three common structures of self-aligning roller bearings are all with small guards on the inner ring, which are distributed on both end faces, and each has a load of roller gaps, with an interval of 180 degrees. The role of the gaps is to facilitate the loading of appropriate rollers.Cages of this kind of structure may generally be made of brass.After finishing the assembly of the finished produc...
• 07

  2021.07

  Method Of Measuring ZZ Ball Bearing Load

  1. The principle of the indirect measurement method of axial load In the process of aero-engine design, according to the calculation method of the axial force of the engine rotor, the axial force of the rotor can be divided into two parts: the axial force of the disc cavity and the axial force of the runner. , The axial force of the disc cavity is the sum of the axial loads acting on the rotor system of each chambe...
• 01

  2021.07

  The Root Reasons and Solution of High Temperature Motor Bearings

  As an important part of the motor, the speed of the bearing will directly affect the performance of the motor. If the speed is too low, the motor will not be brought up. If the speed is too high, the motor will burn out at high temperature,In general, bearing overheating refers to the rolling temperature rise of more than 55℃, the sliding bearing temperature rise of more than 40℃. The root causes and solutions of excess...
• 30

  2021.06

  How To Solve The Problem Of ZZ Bearing Shaft Holding

  After ZZ bearing seizes the shaft, the reasons can be found from several aspects: (1) Whether there is oil leakage in the grinding head. (2) Whether the oil sump is short of oil, and whether the oil level is lower than the indication line on the oil mark. There is a kind of flat grinding lubricating oil which is prepared with kerosene, which is volatile. When the grinder is in normal use, the operator shoul...
• 28

  2021.06

  How important of Heat Treatment for Tapered Roller Bearing

  When the material of the tapered roller bearing is determined, the heat treatment technology is the key technology to determine the service life of the bearing. In the past ten years, the conventional heat treatment of bearings has developed rapidly, and the heat treatment of bearings with ordinary precision and general life can fully realize mass production. For a long time, the heat treatment of high-carbon chromium ...
• 24

  2021.06

  Common Cracking Morphology and Causes of Bearing Rings

  Bearing ring is one of the most important parts of bearing components. In the process of bearing use, bearing ring cracking and fracture are common forms of damage. Some bearings crack on the ring in the early use process, and some bearings fracture due to fatigue in the use process. 1.Macro morphology diagram and causes of cracking of outer ring of deep groove ball bearing Macro morphology diagram of bearing fra...
• 23

  2021.06

  ZZ Bearing Quality Testing Standards

  First, if the structural design is reasonable and advanced, it will have a longer life of ZZ imported bearings. The manufacture of bearings generally involves multiple processing procedures such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of the bearing. Among them, the heat treatment and grinding processes th...
• 21

  2021.06

  How to Fit Tapered Roller Bearing Accuracy Design

  1. Tapered roller bearing system Under normal circumstances, the tapered roller bearing will use the base hole system when fitting, but if it is a standard part, the matching nature of the parts that match it is determined by the standard part. As for the tapered roller bearing, since it is a standard part, the part matching the outer ring is made of base shaft, and the shaft matching the inner ring is made of base hol...
• 17

  2021.06

  The Best Solution for Heating When Bearings Are In Use

  High bearing temperature is a common and harmful fault of rotating equipment, which will reduce the service life of bearings and increase maintenance costs. When the temperature rises quickly and exceeds the standard, it is easy to lead to unplanned outage or load reduction operation of the unit, which has a great impact on economic benefits.Therefore, to quickly determine the cause of the failure and take appropriate measur...
• 16

  2021.06

  Bearing Operation Inspection And Operation Attention

  The inspection items during operation include the rolling sound, vibration, temperature, lubrication status of imported bearings, etc. The details are as follows: 1. The rolling sound of imported bearings uses a sound meter to check the size and sound quality of the rolling sound of the bearing in operation. Even if the bearing is slightly damaged such as peeling, it will emit abnormal and irregular sounds. Distinguish...