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FAFNIR SUPERPRECISION BEARINGS

Industry’s present day applications place demands on machinery that could not be imagined as little as a decade ago.

The Torrington Company Sales Engineering profes- sional in your area can assist you in determining if the hybrid ceramic bearing is suitable for your application.

Machinery is expected to be more efficient, reliable, faster and last longer with less maintenance. In the future, even the great reliability and wide versatility of the stan- dard Torrington steel bearing may be challenged.

When ordering a ceramic hybrid bearing add “C” to the part number after the prefix that specifies precision type, i.e. 2MMVC9110HX or 2MMVC99110WN.

By incorporating ceramic and state-of-the-art bearing technology, The Torrington Company has developed the hybrid ceramic bearing. Designed with increased speed capabilities, the hybrid ceramic bearing features a higher elastic modulus for greater stiffness. Its lower friction characteristics result in less skidding than the all-steel bearing.

Material Properties

Temperature vs Speed 2MMV99110WN (50 mm bore). Grease lubrication.

100 -

16 –

90 -

14 –

80 -

70 -

60 -

50 -

40 -

30 -

20 -

Temperature Rise (C)

12 –

10 –

8–

6–

4–

52100 Steel Balls

Ceramic Balls

10 -

2–

0-

Density

Rigidity

Steel

Friction

Fracture

Thermal

Limit

Expansion

Ceramic

0– 5000

10000

15000 20000 Spindle Speed (RPM)

25000

30000

Life vs Ball Material 2MMV99110WN DUL (DB Mounting)

Hours x 1000

1000 –

1.5x

100 –

10 –

5x

Si

(3)N

(4)

1–

52100 Steel

0.1 –

.5

1.0

1.5

2.0 DN (millions)

102800

85

SUPERPRECISION BEARINGS

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