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Hybrid Ceramic Cylindrical Roller Bearings – Silicon Nitride (Si3N4)

Hybrid ceramic bearings are a specialized type of bearing that combines ceramic rolling elements (usually silicon nitride balls) with metal inner and outer raceways (typically made of steel). This hybrid construction aims to take advantage of the unique properties of both ceramic and metal materials.

  • Reduced Friction: The ceramic rollers have a smoother surface and lower friction coefficient, leading to reduced heat generation and increased efficiency.
  • Longer Life Span: The hard ceramic balls are less susceptible to wear and deformation, often resulting in a longer service life compared to all-metal bearings.
  • Electrically Insulating: The ceramic rolling elements provide electrical insulation, making these bearings useful in applications where electrical currents could otherwise damage metal bearings.
  • High-Speed Capability: Lower friction and reduced heat generation make hybrid ceramic bearings suitable for high-speed applications.
  • Lower Weight: Ceramic materials are lighter than steel, resulting in a lighter bearing and reduced rotational inertia.
  • Corrosion Resistance: While not as corrosion-resistant as full ceramic bearings, the ceramic elements in hybrid bearings do offer some level of resistance against corrosive environments.
  • Cost-Effective: Generally more affordable than full ceramic bearings but offer many of the same advantages.
Dimensions Value

Bore diatmeter – d

55 mm
Outer diameter – D
120 mm
Width – B
29 mm
Performance Value

Basic dynamic load rating

138 000 N
Basic static load rating
143 000 N
Reference speed
5 600 r/min
Limiting speed
9 000 r/min
Properties Value

Metering System

Metric
ABEC/DIN Rating
ABEC#3/DINP6
Number of rows
1
Bore Type
Cylindrical
Material – Ball or Roller
Silicon Nitride SI3N4
Material – Cage
Brass
Material – Rings
52100 Chrome Steel
Seal Type
Open

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