Timken® Fafnir® hybrid ball bearings combine ceramic rolling elements with superfinished steel rings. This “hybrid” combination provides superior ceramic performance at a cost-effective price. This design also enables ceramic bearings to deliver outstanding service life and operating characteristics at high spindle speeds.

Size range: 10 mm - 200 mm (0.3937 in. - 7.874 in.) bore

Design Attributes

• Design combines ceramic rolling elements with superfinished steel rings to run faster, cooler and longer.
• Advanced design and materials help improve rigidity while reducing noise, vibration and operating temperature.
• Can be ordered with or without seals.
• Expanded options include custom preloads, 15° or 25° contact angles, and designs to ISO/ABMA 02, 10, 19 specifications.

Applications

• Aircraft generators
• Biotechnology equipment
• High speed machining and grinding spindles
• high speed mills
• Precision instruments
• Pumps and compressors

Timken® Fafnir® ceramic hybrid bearings help machine tool spindles achieve maximum accuracy at speeds greater than 2 million DN under air/oil lubrication, with reduced skidding, wear and heat generation. Speeds greater than 1 million DN are possible with grease lubrication.

The lightweight silicon nitride balls have a superfine surface finish and high hardness (Rc78) that can help to extend service life up to 5 times that of standard steel bearings. Low friction characteristics enhance operation under minimal lubrication conditions and increase both life and speed capabilities of lubricants.

The ceramic’s greater modulus of elasticity significantly increases rigidity over steel bearings. Greater bearing rigidity improves spindle stiffness and accuracy for precise machining. Low thermal expansion helps maintain consistent bearing preload and stiffness at high speeds.

ABEC 9 ultra-precision geometry and micron-coded bores and outside diameters add to superior system performance. Each bearing is 100% functionally tested per ABMA Standard 13. This assures consistent quality and smooth, low noise.