loading
Loading.....

Needle Bearing

A bearing which makes use of small cylindrical rollers is called a needle roller bearing. They consist of a small, needle – shaped rollers and are used where space is extra.

 

l
l
l
l
l
l
l
l
l
l
l
l
l
N
l
l
l
l
l
l
l
l
l
l
l
l
l
 
Needle bearings have rollers with low profile. The difference of a needle roller bearing and a roller bearing is the ratio of diameter and length of their rollers, when this ratio of the diameter and the length of roller of a roller bearing lies in the range of 0.4 to 0.1, then that roller bearing is called a needle roller bearing which are used to lessen the friction of a rotating surface.
 
These bearings have a large surface area which is in contact with the bearing’s outer surfaces compared to a ball bearing. Further, there is less added clearance (i.e., the difference between the diameter of the shaft and the same of the bearing) so they are much more small. A particular structure of a needle bearing consists of a needle cage which orients and contains the needle rollers themselves also, there is an outer race (which is sometimes called the housing itself). The Radial needle bearings are cylindrical and use rollers which are parallel to the axis of the shaft whereas the Thrust needle bearings are flat and use radial pattern of needles. The Full complement bearings possess solid inner and outer rings and some rib – guided cylindrical rollers. Since these bearings have the maximum possible number of rolling elements, they have extremely large radial load carrying capacity and also, are suitable for particularly compact designs. Needle bearings are widely used in automobile components such as transmission, rocker arm pivots, pumps and compressors. The drive shaft of a rear – wheel drive vehicle generally has atleast eight needle bearings, four are present in each U joint, and often more if they are particularly long, or operate on steeply inclined slopes.
 
Marks' Standard Handbook for Mechanical Engineers provides additional clarification on the topic of needle roller it says, a needle bearing is a roller bearing with rollers whose length is atleast four times its diameter. 
 
 

Popular Car Comparisons

Fortuner 2.7 4x2 ATEndeavour Titanium 4x2 AT

Fortuner Vs Endeavour full blown SUV Competing for Buyers Wallet. Real SUV for SUV lovers from Toyota and Ford. Endeavour and Fortuner comes in 4*2 and 4*4 drive train. Fortunately both have the muscle, looks and power under their hoods to take any terrain with ease. Whilst, on paper feature to feature and engine comparison seems to be tilting the balance in favour of the Endeavour, however, Toyota has enough fan following who will willingly ignore any marquee for a Toyota at any price. Lucky Toyota.


Write a Review

Do a Good Deed Today. Reviews on cars and/or dealership on www.ecardlr.com have been written by people like you. These honest, candid reviews on cars or their dealership experience help others like you and all of us help take a right decision. It's your turn now to return their good deeds with a review on any car/or dealership that you might have been lately. Please write a review on a car and/dealership and help other car buyers in India.

Car Advice By Car Experts

Price comparison between Endeavour, Fortuner, Tucson and CRV

Must admit we are surprised at your query, as the SUVs you are comparing are not comparable at all. The only reason we believe that you are looking at price and variant details for Ford Endeavour, Toy....Read More

Dealer Locator


Service Centre Locator

close