Cause Analysis Of Needle Roller Bearing Failure

What is needle roller bearing
Needle roller bearings are roller bearings with cylindrical roller, relative to its diameter, the roller is thin and long.This type of roller is called a needle roller.Despite having a small section, the bearing still has a high load bearing capacity.
Classification of needle roller bearings
Open type stamped outer ring needle roller bearings, closed stamped outer ring needle roller bearings, needle roller bearings with inner ring and without inner ring needle roller bearings/needle roller bearings without inner ring and cage, full needle roller bearings with and without cage.
The role of needle roller bearings
Needle roller bearings are equipped with thin and long rollers, so the radial structure is compact, the inside diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, especially suitable for the radial installation size of the limited supporting structure.
Needle roller bearings according to the use of different occasions, processing accuracy and surface quality should be combined with bearing ring, purpose.

Cause analysis of needle roller bearing failure
1. Careless inspection before assembly.Before assembling the bearing, it should be cleaned and carefully checked the inner and outer seat ring, rolling body and cage of the bearing to see if there is rust, burr, bump and crack;Check whether the bearing clearance is proper.Whether the rotation is brisk and free, whether there is a sudden phenomenon of stagnation.
2. Improper assembly.
Improper assembly will lead to the above kinds of fault forms of bearings, as well as the following situations:
A. Improper matching: sometimes because the size measurement of the shaft diameter and bearing seat hole is not accurate or the matching surface roughness does not meet the standard requirements, the bearing is difficult to rotate, heat, wear aggravation or stuck.
B. Improper assembly method: when the interference between bearing and shaft diameter or bearing seat hole is small, the pressing method is mostly used for assembly.
C. Improper temperature control during assembly: if the interference between needle roller bearing and shaft diameter is large during assembly, thermal assembly method is generally adopted.
D. Improper clearance adjustment during assembly: whether the clearance can be adjusted or the clearance can not be adjusted, the axial clearance should be adjusted during assembly.The price of needle bearing
The price of needle bearing is affected by many factors such as market, material and quotation. If you want to know the specific price of needle bearing， please contact us to make enquiries.
Supplier of needle bearing:BMB Bearings
BMB Bearings is the complete one-stop supplier of OEMs and wholesalers purchasing high-precision, miniature ball bearings, industrial ball bearing related products, as well as related professional services, including world-class engineering and design. If you have any need, please feel free to contact us .