Electric Motor Bearing Types and Characteristics
Feb. 07, 2023
50 0 0
A bearing is a machine element used to permit a rotary motion and transmit the power between machine parts. Rolling element bearings allow relative movement of joined two parts: inner and outer rings that move in opposite directions and are separated by rolling elements.
Bearings can be chosen according to their main dimensions:
Rolling element bearings play a crucial role in many fields such as the electronics industry, chemical and pharmaceutical industries, wind turbines, airplanes, steel industry, automotive industry, and household appliances. Over 50 billion rolling bearings have been produced across the world. In these fields, a significant part of rolling bearing "consumers" are electric machines, and the technical progress mainly depends on their durability, reliability, and efficiency.
This article aims to discover the main electric motor rolling bearing types, their role in electric motors, and maintenance tips.
The main functions of Rolling Bearings in Electric Motors:
supporting and locating the rotor
transferring loads from the shaft to the motor frame
keeping the air gap small and persistent.
enabling high and low-speed operations
The main design and utilization requirements of Rolling Bearings in Electric Motors:
lower production cost
easy maintenance: easy to handle and maintain
Electric machinery's most common rolling bearing types are deep groove ball bearings, cylindrical roller bearings, and angular contact ball bearings due to their versatility and overall performance.
Deep Groove Ball Bearings
They are characterized by having deep raceway grooves in which the inner and outer rings have circular arcs of a slightly larger radius than that of the balls. They are very effective in high rotating speeds and moderate radial and axial loads. They are used for locating and non-locating bearing positions on small and medium-sized electric motors.
Cylindrical Roller Bearings
They are usually used as non-locating bearings on the drive side in medium to large-sized motors.
Both deep groove ball and cylindrical roller bearings are completely interchangeable with standard bearings!
Angular Contact Ball Bearings
They are used as locating bearings in electric motors with high thrust loads or vertical axis and for high rotating speeds. They are available in single or double-row configurations and paired to accommodate thrust loads in both directions.
Seals in Bearings
They are common in smaller motor applications to significantly limit contamination entry. Unlike open bearings, these bearings are not re-greasable, thus having limited overall bearing life and requiring replacement upon any signs of issues.
These electric motor bearings can be re-lubricated without any relief; otherwise, pressure can build up and force the shield against the cage or rolling elements.
How does a magnetic agitator work and why is it preferred over mechanical agitators?
Pilot-Operated Sequence Valve: Controlling the Flow of Fluid in Hydraulic Systems
Pilot-operated sequence valves are an essential component in hydraulic systems, providing precise control over the sequence of operations. They are used in a wide range of applications, from manufacturing and production lines to heavy machinery and equipment. In this article, we will explore the pilot-operated sequence valve in detail, including its function, design, and benefits.
Cardan Shafts: A Critical Component of the Drivetrain
Cardan shafts, also known as propeller shafts, are an essential part of the drivetrain in many vehicles, including cars, trucks, and heavy machinery. They connect the transmission to the differential, transmitting power from the engine to the wheels. Without a Cardan shaft, a vehicle would not be able to move.
What Are the Benefits of Using a Pneumatic Piston Pump in Industrial Applications?
More Categories You Might Be Interest
- Automobiles & Motorcycles
- Beauty & Personal Care
- Business Services
- Construction & Real Estate
- Consumer Electronics
- Electrical Equipment & Supplies
- Electronic Components & Supplies
- Excess Inventory
- Fashion Accessories
- Food & Beverage
- Gifts & Crafts
- Health & Medical
- Home & Garden
- Home Appliances
- Lights & Lighting
- Luggage, Bags & Cases
- Measurement & Analysis Instruments
- Mechanical Parts & Fabrication Services
- Minerals & Metallurgy
- Office & School Supplies
- Packaging & Printing
- Rubber & Plastics
- Security & Protection
- Service Equipment
- Shoes & Accessories
- Sports & Entertainment
- Textiles & Leather Products
- Timepieces, Jewelry, Eyewear
- Toys & Hobbies
If you are interested in sending in a Guest Blogger Submission,welcome to write for us!
Thank you for your message.