Development of ball bearings with solid film for high-vacuum, high-temperature, high-speed application

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Lubrication Engineering; (United States)

OSTI ID:6040462

Ogawa, T; Konishi, K; Aihara, S; Sawamoto, T ^[1]

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1. NSK, Ltd., Fujisawa (Japan)

This paper describes the experimental results of long-life solid lubricated ball bearings tested under high-vacuum of 10 exp -4 Pa, high-temperature of 300 C, and high-speed (9000 rpm) conditions. For full ball-type bearings, the thin soft metals, either Ag or Pb, which were coated on the races and balls, appeared to have good torque properties. However, the durability of such bearings was less than 300 hours. The transfer films from the lamellar solid MoS2 and metal composite retainers improved the torque and wear properties. For ceramic, i.e., silicon nitride, balls used with steel rings, wear occurred on the inner rings. All ceramic bearings with composite retainers showed improved torque and wear properties. 18 refs.

• OSTI ID: 6040462
• Journal Information: Lubrication Engineering; (United States), Journal Name: Lubrication Engineering; (United States) Vol. 49:4; ISSN 0024-7154; ISSN LUENAG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
42 ENGINEERING
420200* -- Engineering-- Facilities
Equipment
& Techniques
BALL BEARINGS
BEARINGS
CHALCOGENIDES
HIGH VACUUM
LUBRICANTS
LUBRICATING PROPERTIES
LUBRICATION
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
ROLLER BEARINGS
SOLID LUBRICANTS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENT COMPOUNDS