Malloy has a large selection of gen bearings in stock. Most of these are the upgraded hybrid ceramic construction.
ABB| Hitachi | Winergy| VEM| Indar| Elin| LeRoy Somer
GOOD: SKF Explorer Ball Bearing
BETTER: SKF InsoCoat Outer Ring
BETTER: SKF InsoCoat Inner Ring
BEST: SKF/MRC Ceramic Hybrid Bearing
GOOD: SKF Explorer Ball Bearing
SKF Explorer class ball bearings provide outstanding performance and service life. These improvements begin with using an extremely clean bearing steel combined with a unique heat treatment process. In addition to that a revised cage, optimized internal geometry and surface finishes, and increased uniformity in balls. All of these characteristics combined to give you the following features:
- Reduced running friction
- Reduced noise and vibration levels
- Cooler running
- Longer lubricant life
- Excellent high speed performance
BETTER: SKF InsoCoat Bearings
SKF InsoCoatbearings are an economical way to achieve protection from shaft currents found on many Wind generators of 1.5MW and larger
SKF Explorer bearing features
- 1000V protection
- 50MΩ electrical resistance
- Eliminates electrical fluting found in 1.5MW and larger Wind generators
BEST: SKF/MRC Ceramic Hybrid Bearings
SKF Ceramic Hybrid bearings are the best bearing that can be used in Wind generators of 1.5MW and larger
Electrical Insulation:
The ceramic rolling elements act as an insulator protecting the bearing from electrical erosion, and lubricant contamination associated with electrical erosion found on all steel bearings.
Robust:
This ceramic material is much harder than, and has a higher modulus of elasticity than bearing steel. The less dense ceramic material packaged with 521 00 bearing steel rings has a much lower risk of false brinelling which can occur when a bearing is subjected to vibrations when not turning.
Heat:
With a 60% lower density than steel balls and lower coefficient of friction, ceramic rolling elements have lower operating temperatures than their standard steel counterparts. Also, Silicon Nitride has a coefficient of expansion that is 70% less than steel. This means that the balls are less sensitive to the high temperatures seen in many of the generators.
Reliability:
The above features add up to a bearing that can run cooler, last longer, and extend grease life, increasing the reliability of your generator.
Typical electrical fluting damage example
