Battery life anxiety is exaggerated. Existing electric vehicles can replace 90% of private cars.
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Tesla's electric car has achieved initial success, but there are still many consumers who believe that the cruising range of electric vehicles is difficult to meet the demand, and there is a risk of half-way power shortage. However, according to a recent study by the Massachusetts Institute of Technology, the endurance anxiety of electric vehicles is obviously exaggerated.
The college's expert, Jessika Trancik, and a research team conducted research on driving habits of motorists across the United States. The results show that current electric vehicle technology can replace 87% of private cars on the road.
In addition, according to the current development rate of battery technology, the above experts predict that by 2020, electric vehicles can completely replace 98% of vehicles on the road.
In this study, the team used Japan's Nissan's electric car "Nissan Leaf", which sells for $29,000 and has a range of 119 kilometers on a single charge.
It is worth mentioning that other electric vehicles, such as Tesla's Model X, have reached a mileage of 320 kilometers on a single charge.
The MIT research team used data from the 2009 National Family Travel Survey, and collected data on GPS mileage, fuel economy, and temperature in several locations in the United States.
In this study, experts assume that users of electric vehicles will only be charged at night.
In urban road systems, electric vehicles require frequent parking and start-up, which is considered an "enemy" for the development of electric vehicles. But the researchers found that even in a big city like Houston, electric cars can replace 88% of private cars.
In a rural environment, electric cars can replace 81% of private cars.
If 87% of private cars can be replaced with electric vehicles, the researchers said that this will bring huge air pollution improvement effects, and people's dependence on gasoline and diesel will be greatly reduced. Researchers say the US's dependence on fossil fuels can be reduced by 61% if electric vehicles can be replaced.
Currently, researchers are preparing to let ordinary consumers use their research models to consider whether electric vehicles can fulfill their travel needs and whether they can replace gasoline and diesel vehicles with electric vehicles.

Angular Contact Ball Bearing

Angular contact ball bearings mainly bear large unidirectional axial load. The greater the contact angle, the greater the load bearing capacity. The material of cage is steel plate, brass or engineering plastics. The forming method is stamping or turning. It is selected according to the bearing form or using condition. Others include combined angular contact ball bearings, double row angular contact ball bearings and four-point contact ball bearings.

Angular Contact Ball Bearing
Bearing Brand
LS
Bearing Types
 Angular Contact Ball Bearing
Bearing Material
Chrome steel Gcr15/Stainless steel
Bearing Precision
 P0,P6,P5,P4,P2
Bearing Package
 Plastic bag+carton box
Bearing Shipping
 1-3 work days

Angular contact bearings are able to support radial load and axial load. As single row angular contact ball bearings can only support axial load in single direction, matched bearing mounting is often adopted to them as matched parts of bearings, preload for them is more convenient. Retainers are made of brass, synthetic resins or others subject according to individual bearing features and application conditions.

a=15 °7000C

a=25 °7000AC

a=40 °7000B


Angular contact ball bearing include:


1) Single row angular contact ball bearing


2) Matched angular contact ball bearing


3) Double row angular contact ball bearing


4) Four-point contact ball bearing


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