crankshaft bearing

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

The crankshaft bearing is a crucial component in internal combustion engines, particularly in automotive and industrial applications. Below is a detailed introduction to the crankshaft bearing in English:

Overview

The crankshaft bearing, also known as a crank bearing, supports the crankshaft within the engine block. It allows the crankshaft to rotate smoothly while transmitting power from the pistons to the transmission or other drive components. The crankshaft bearing is typically a rolling-element bearing, such as a ball bearing or roller bearing, that reduces friction and wear between the crankshaft and the engine block.

Function

The primary function of the crankshaft bearing is to support the crankshaft and allow it to rotate freely within the engine block. It also helps to distribute the loads generated by the pistons and connecting rods evenly across the bearing surface, reducing stress and wear on the crankshaft and engine block.

Types

There are several types of crankshaft bearings, including:

1. Plain Bearings: These are made of soft materials such as bronze or babbitt metal, which conform to the shape of the crankshaft journal over time. Plain bearings require lubrication to reduce friction and wear.

2. Roller Bearings: These bearings use cylindrical rollers to support the crankshaft. Roller bearings can handle higher loads and are more durable than plain bearings.

3. Ball Bearings: These bearings use spherical balls to support the crankshaft. Ball bearings are lighter and have lower friction than roller bearings but may not be suitable for high-load applications.

Design and Construction

Crankshaft bearings are precision-manufactured components that require careful design and construction to ensure reliability and durability. They typically include:

• Inner Race: The inner surface of the bearing that contacts the crankshaft journal.

• Outer Race: The outer surface of the bearing that fits into the engine block or bearing housing.

• Rolling Elements: Balls or rollers that separate the inner and outer races and reduce friction.

• Retainer: A cage or separator that holds the rolling elements in place and prevents them from contacting each other.

Lubrication

Proper lubrication is essential for the performance and lifespan of crankshaft bearings. Lubricants such as oil or grease are used to reduce friction, wear, and heat generation. The lubrication system must be designed to ensure that sufficient lubricant reaches the bearing surfaces at all operating speeds and loads.

Maintenance

Regular maintenance and inspection of crankshaft bearings are crucial to prevent failures and extend the lifespan of the engine. This includes checking for wear, cracks, and lubrication levels, as well as replacing bearings as needed.

Applications

Crankshaft bearings are used in a wide range of internal combustion engines, including automotive engines, marine engines, industrial engines, and more. They are essential for the reliable and efficient operation of these engines.

In conclusion, the crankshaft bearing is a vital component in internal combustion engines that supports the crankshaft and allows it to rotate smoothly. Proper design, construction, lubrication, and maintenance are essential to ensure the reliability and durability of these bearings.

For further details on this product please directly contact our sales department under shh@dmsw.com 

 Our products                                                                                                                                                                 

Ball Bearings

SKF

NSK

FAG

TIMKEN

          IKO

NTN

GMN