Types of bearings in electric motors - KZ Bearings
What Are Motor Bearings?
At their core, motor bearings are mechanical elements designed to reduce friction between moving parts—specifically, between the rotating shaft and the stationary motor housing. They help maintain the correct alignment of the shaft and allow it to spin freely under various load conditions. Bearings come in different types, including ball bearings, roller bearings, and sleeve bearings, each suited for specific applications based on load, speed, and environmental factors.
Ball Bearings for Electric Motors
Ball bearings are widely used in electric motors for their ability to handle high-speed rotation with minimal friction. Here are the main types we offer at KZ:
1. KZ Deep Groove Ball Bearings
Our most commonly supplied bearings, KZ Deep Groove Ball Bearings, are ideal for motors requiring quiet operation and high-speed performance. They handle both radial and moderate axial loads and are available in sealed, shielded, or open designs to suit different environments.
Applications: Fans, pumps, compressors, household appliances, and general-purpose electric motors.
2. KZ Angular Contact Ball Bearings
KZ Angular Contact Bearings are designed to support combined radial and axial loads, with optimized contact angles for high precision and performance. These bearings are often installed in pairs to handle axial loads in both directions.
Applications: High-speed machine tools, precision motors, and specialized equipment.
3. KZ Double-Row Deep Groove Ball Bearings
KZ Double-Row Deep Groove Ball Bearings provide high radial load capacity in a compact design. With two rows of balls, they handle moderate axial loads in both directions, ideal for electric motors needing strength, reliability, and space efficiency.
Applications: Larger electric motors, Heavy-duty industrial machinery, Gear motors with limited axial space
Roller Bearings for Heavy-Duty Motors
Roller bearings excel in supporting higher radial loads and are commonly used in larger industrial motors. KZ offers the following roller bearing types:
1. KZ Cylindrical Roller Bearings
Known for their high radial load capacity and speed tolerance, KZ Cylindrical Roller Bearings are ideal for large motors operating under heavy mechanical stress.
Applications: Industrial pumps, generators, and gearboxes.
2. KZ Spherical Roller Bearings
KZ Spherical Roller Bearings feature a self-aligning design that can tolerate shaft misalignment and carry very high radial loads along with moderate axial loads.
Applications: Mining equipment, steel mills, and other heavy-duty industries.
These bearings are engineered to handle combined radial and thrust loads and are commonly used where shaft rigidity and load balancing are critical.
Applications: Specialized motors and automotive equipment.
Why Choose KZ Bearings?
At KZ Bearing, we are committed to engineering excellence, precision manufacturing, and long-lasting performance. Whether you’re designing small motors for domestic appliances or large industrial machines, our range of ball and roller bearings offers the durability and efficiency you need.