Hybrid bearings

Hybrid bearings have rings made of bearing steel and rolling elements made of bearing-grade silicon nitride (Si 3 N 4 ), which makes the bearings electrically insulating.
Even under difficult operating conditions, silicon nitride rolling elements can extend bearing life by providing enhanced bearing performance.
The speed ratings in the product tables for hybrid ceramic deep groove ball bearings and hybrid ceramic cylindrical roller bearings are expressed as
Reference speeds, which allow a quick assessment of speed capability based on a thermal reference system
Limit speed, which is a mechanical limit that should not be exceeded unless the bearing design and application is suitable for higher speeds

Products of Hybrid bearings

Product types

Hybrid deep groove ball bearings

Non-separating bearings for high speeds, which can withstand radial loads and axial loads in both directions. Bearings with an inner diameter ≤ 45 mm are most suitable for electric motors (0.15-15 kW), power tools and high-speed drives.

Hybrid cylindrical roller bearings

Separate bearings, suitable for high speeds, can withstand large radial loads and axial displacements. Commonly used in electric motors and in applications operating under severe operating conditions.

Features and Benefits

The advantages of hybrid ceramic bearings over bearings of the same size with steel rolling elements include
Protection from current damage
Hybrid bearings are non-conductive, making them suitable for applications where current is present, such as AC and DC motors and generators.
Higher speed capability
Silicon nitride rolling elements are 60% less dense than bearing steel rolling elements of the same size This lighter weight and inertia translates into higher speed capability and superior performance during fast starts and stops.
Long service life
Hybrid bearings generate less frictional heat, especially at high speeds, contributing to longer bearing life and relubrication intervals.
High wear resistance
The silicon nitride rolling elements have higher hardness, making hybrid bearings suitable for difficult conditions and contaminated environments.
High Bearing Stiffness
With high modulus of elasticity, hybrid bearings provide higher bearing stiffness.
Reduced risk of smearing
The risk of smearing between the silicon nitride and the steel surface is reduced, even under inadequate lubrication conditions, such as high speeds and rapid acceleration, or when the hydrodynamic film is insufficient.
Reduced risk of false Brinell indentation
When subjected to vibration, hybrid ceramic bearings are significantly less susceptible to false Brinell indentation (formation of shallow depressions in the raceway) between the silicon nitride and the steel surface.
Lower sensitivity to temperature gradients
Silicon nitride rolling elements have a lower coefficient of thermal expansion, which means they are more stable under temperature gradients within the bearing and provide more accurate preload/play control.

Applications

The following are examples of applications where high temperature bearings may be used.
Electric motors and generators
Cars and light trucks – racing
Two- and three-wheeled vehicles – racing cars
Railroads
Wind energy

FAQ

What are radial and axial loads?

Loads are defined by their direction. Loads perpendicular to the shaft are called radial loads and loads parallel to the shaft are called axial (thrust) loads.

How to mount and dismount your bearing?

Successful mounting is critical to the life cycle of your bearing. Proper bearing dismounting can safeguard other machine components and maintenance workers.

Bearing failure and how to prevent it

The bearing is at the heart of all rotating equipment, and the condition of the bearing often reflects how well a machine is running.
Learn more about bearing damage and bearing failure – and how to prevent it.

Can I get a sample to check out the quality?

Sure, free samples are available for stock products if you can pay for the shipping cost.

How soon can I expect my order to be finished?

We have regular stock for standard bearings that can be shipped right after your payment. It will take 15-60 days for new production order,which depends on your order quantity.

What if I receive defective products for my order?

All our bearings are 100% inspected strictly before packing.
If any defective products received, please provide photos and video to show us the problem and help us improve the quality.
New products will be sent to you as replacement if the probelm is product quality.