In industrial production, an unexpected bearing failure means much more than simply replacing a component. Stopped production lines, lost output, and emergency repairs can result in significant costs for companies. That is why one of the primary goals of modern industrial maintenance is to reduce downtime and extend equipment service life.
By selecting the right industrial bearing technology, companies can significantly reduce failures, optimize maintenance processes, and improve overall operational reliability.
Why Do Bearings Fail Prematurely?
A significant percentage of bearing failures are not caused by manufacturing defects but by operating conditions and application-related factors.
The most common causes of bearing failure include:
- Inadequate lubrication
- Contamination and the ingress of foreign particles
- Moisture and corrosion
- Excessive loads
- Vibration
- Electrical discharge damage
- Incorrect bearing selection
Industrial experience shows that many bearing failures can be prevented through proper lubrication practices and by selecting a bearing specifically suited to the application.
For this reason, choosing a bearing based solely on its dimensions is no longer sufficient. The entire operating system must be considered, including lubrication methods, sealing solutions, environmental conditions, load characteristics, and operating requirements.
A comprehensive approach to bearing selection can significantly improve reliability, extend service life, and reduce maintenance costs over the long term.
NTN Bearing Solutions for Industrial Applications
NTN is a globally recognized bearing manufacturer with a comprehensive industrial portfolio ranging from standard ball bearings to highly specialized application-specific solutions.
The product range includes, among others:
- deep groove ball bearings,
- cylindrical roller bearings,
- tapered roller bearings,
- spherical roller bearings,
- needle roller systems,
- bearing units,
- as well as linear motion solutions.
Common Industrial Problem #1: Bearing Failure Caused by Contamination
In industries such as cement production, mining, woodworking, and steel manufacturing, dust, contamination, and moisture are constant challenges.
With conventional open bearings, contaminants can easily enter the rolling elements, leading to accelerated wear and premature bearing failure.
NTN KIZEI® Spherical Roller Bearings
NTN KIZEI® spherical roller bearings have been specifically developed for contaminated and demanding industrial environments.
Key benefits:
✔ Steel shield design
✔ Improved protection against contamination
✔ Extended lubricant service life
✔ Reduced relubrication requirements
✔ Up to twice the service life in certain applications
The KIZEI® technology is particularly beneficial in facilities where bearings operate continuously in dusty, contaminated, or harsh operating environments.
ULTAGE™ bearings can help reduce total lifecycle costs while improving operational reliability and production uptime.
Common Industrial Problem #2: Heavy Loads and Short Bearing Service Life
In heavy industry, the energy sector, and high-performance drive systems, bearings are often exposed to extreme operating loads.
Under these conditions, conventional bearing solutions may not provide sufficient service life or reliability.
NTN ULTAGE™ Bearing Series
The NTN ULTAGE™ series has been specifically developed for high-performance industrial applications where durability and reliability are critical.
Key benefits:
✔ Higher load-carrying capacity
✔ Optimized internal geometry
✔ Increased speed capability
✔ Longer operating life
✔ Reduced maintenance requirements
Common Industrial Problem #3: Corrosion and Intensive Cleaning Processes
In the food processing, beverage, and pharmaceutical industries, bearings are regularly exposed to:
- moisture,
- chemicals,
- cleaning and disinfecting agents,
- high-pressure washdowns.
These operating conditions can significantly reduce the service life of standard bearings.
NTN SENTINEL™ Stainless Steel Bearings
NTN SENTINEL™ bearing solutions have been specifically designed for hygienic and corrosion-prone environments.
Key benefits:
✔ Stainless steel construction
✔ Excellent corrosion resistance
✔ Food industry compatibility
✔ Advanced sealing technology
✔ Reduced lubricant loss
SENTINEL™ bearings can help reduce unplanned downtime in facilities where cleanability, hygiene, and operational reliability are top priorities.
Common Industrial Problem #4: Electrical Discharge Damage in Electric Motors
With the increasing use of variable frequency drives (VFDs) and inverter-driven systems, electrical current-induced bearing damage has become a growing concern across many industrial applications.
Electrical discharges can create microscopic damage on bearing raceways, leading to premature bearing failure and costly downtime.
NTN MEGAOHM™ Insulated Bearings
NTN MEGAOHM™ technology protects bearings through a specialized electrical insulation coating designed to prevent current from passing through the bearing.
Key benefits:
✔ Protection against electrical current passage
✔ Extended bearing service life
✔ Reduced risk of premature failure
✔ Ideal for inverter-driven applications
✔ Recommended for electric motors and pumps
Electrically insulated bearings are now considered an essential protective solution in many industrial applications where electrical discharge damage poses a risk to equipment reliability.
NTN Handbook – A Valuable Resource for Maintenance Professionals and Engineers
The official NTN Handbook in Hungarian contains detailed information on:
- specialized NTN bearing technologies,
- industry-specific applications,
- lubrication recommendations,
- maintenance guidelines,
- technical reference materials.
The publication can be a valuable resource for:
- maintenance professionals,
- technical managers,
- machine designers,
- production managers,
- purchasing specialists,
- industrial sales professionals.
Download the NTN Handbook in Hungarian or Contact Our Experts
Whether you are designing a new machine, dealing with recurring bearing failures, addressing lubrication issues, or selecting the right bearing solution, the technical team at Bearing Kft. is ready to help.
Download the NTN Handbook in Hungarian or get in touch with our expert colleagues for professional advice and technical support.
Frequently Asked Questions
What are the most common causes of bearing failure?
Poor lubrication, contamination, excessive loads, vibration, corrosion, and electrical discharge are among the most common causes of bearing failure.
How can the service life of an industrial bearing be extended?
Proper lubrication, regular condition monitoring, correct installation, and selecting the right bearing for the application can significantly increase bearing service life.
When should insulated bearings be used?
Insulated bearings are particularly recommended for variable frequency drive (VFD) motors, inverter-driven systems, and applications where electrical current may pass through the bearing.
Which bearing is recommended for contaminated environments?
In dusty, wet, or heavily contaminated environments, it is advisable to use specially shielded or sealed bearings, such as NTN KIZEI® spherical roller bearings.
What types of bearings are used in the food industry?
The food industry typically uses stainless steel, corrosion-resistant bearings with advanced sealing solutions, such as the NTN SENTINEL™ series.
How can downtime be reduced in manufacturing?
Downtime can be significantly reduced through proper bearing selection, preventive maintenance, regular condition monitoring, and identifying the root causes of failures.
Where can I get help selecting the right NTN bearing?
When selecting an NTN bearing, it is important to consider operating conditions, load requirements, speed, and environmental factors. If you are unsure which solution is best for your application, expert assistance is recommended.
The technical team at Bearing Kft. can help you select NTN bearings, linear motion systems, and lubrication solutions tailored to your specific requirements.
If you have any questions, feel free to contact us. Our specialists will be happy to assist you.
