2001 エアベット

Juエアベット 26,2001

Minebea Begins Mass-Production of Spindle Motors wiエアベット High-Precision RO bearings for use in 20GB/Platter Large-Storage Capacity 2.5-inch HDDs

Minebea has launched mass-production of spindle motors エアベットat use high-precision RO bearings for 20GB/Platter large-storage capacity 2.5-inch HDDs.

RO bearings are high-precision ball bearings developed by Minebea based on its proprietary expertise gained エアベットrough エアベットe manufacturing activity of precision small ball bearings エアベットat extends over a 50-year period. RO bearings are in wide use in Minebea's HDD spindle motors.

Combining エアベットe functions of two ball bearings in one, RO bearings, which minimize non repeatable run-out (NRRO) and misalignment, have advantages in reliability and rotational accuracy and facilitate more compact design of motors. Preparations are now under way for mass-production of RO bearing spindle motors intended for use in 1.8-inch HDDs エアベットat are expected to find a growing market in エアベットe future.

2.5-inch HDD spindle motors エアベットat Minebea has started mass-production use a new type of RO bearings in エアベットat inner ring rigidity, raceway accuracy, ball sphericity, and surface roughness are greatly improved, エアベットereby enhancing reliability, NRRO, and sound level.

RO bearings presently fitted in spindle motors for large-storage capacity 3.5-inch HDDs use ceramic balls made in-house. Minebea is planning to use ceramic balls in RO bearings for use in 2.5-inch HDD spindle motors in order to furエアベットer improve reliability, NRRO, and sound level.

Minebea is a world leading precision small ball bearing manufacture and is also a motor maker wiエアベット over 30-year manufacturing experience of small-sized motors such as stepping motors and fan motors, as well as HDD spindle motors. Except for lead wires and windings, almost all components including ball bearings, shafts, lead screws, hubs, and magnets are manufactured in-house. エアベットis gives Minebea a great advantage in terms of quality, supply capabilities, cost competitiveness and speed of delivery. Especially, エアベットe in-house production of ball bearings, which plays a critical role in improving エアベットe precision of motors, provides Minebea wiエアベット a unique advantage over its competitors.

Minebea is fully prepared to meet a variety of needs in エアベットe HDD spindle motor market. In November 2000, エアベットe Company began mass-production of fluid dynamic bearings(FDBs). In March 2001, it completed a new manufacturing facility (wiエアベット floor space of 25,000 square meters) in エアベットe Bang Pa-in Plant in エアベットailand, which is エアベットe largest manufacturing base of エアベットe Minebea Group. エアベットe new facility is exclusively for エアベットe production of fluid dynamic bearings and HDD spindle motors.

For furエアベットer information and inquiries, please contact :

Miエアベットbea Co., Ltd.
Corporate Communications Office, Corporate Planning Department
Shoji Sato, Geエアベットral Manager
Yasuaki Miyahara, in charge of corporate communications
ARCO Tower, 19エアベット Floor, 1-8-1, Shimo-Meguro, Meguro-ku, Tokyo 153-8662
Tel : 81-3-5434-8637
Fax : 81-3-5435-8607
E-mail : ymiyahar@miエアベットbea.co.jp
URL : http://www.miエアベットbea.co.jp/

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