Special Issue; Products for Industrial Machinery - NTN

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CONTENTS Preface Kenji OKADA 1 Contribution Trends in Recent Machine Tool Technologies Dr. Toshimichi MORIWAKI Professor Department of Mechanical Engineering KOBE University 2 Special Issue for Mchine Tool Development of a New Grease Lubrication System for Machine Tool Main Spindles Sun-Woo LEE and Masatsugu MORI High-Speed Tapered Roller Bearing for Machine Tool Main Spindle Masatsugu MORI and Takuji KOBAYASHI Minimum Quantity and Cooling Jet Lubricated Angular Contact Ball Bearings for Machine Tool Mineo KOYAMA dmn170x10 4 Sealed High-Speed Angular Contact Bearing "New BNS Type" Futoshi KOSUGI Development of Aerostatic Bearing Spindle for Precision Machine Tools Teruyoshi HORIUCHI, Kazuyuki AONO and Hiroaki HIYOSHI Our Line of New products for Machine Tool 8 16 24 28 34 38 Technical Papers Technical Articles New Products Atmospheric Control Method for JIS-SUJ2 Carbonitriding Processes Chikara OHKI The Influence of Hydrogen on Tension-Compression and Rolling Contact Fatigue Properties of Bearing Steel Hiroshi HAMADA and Yukio MATSUBARA Technical Trends in Bearings for Office Equipment Chikara KATAGIRI Unit Products for Office Equipment Shoji ITOMI and Atsushi MOROOKA Honing Sludge and Electro Furnace Dust Briquetter Shouzo GOTOH and Kanji NAKAMURA Ultra-Clean Bearing for Clean Environments Ryouichi NAKAJIMA and Masaaki HONDA Development of New RCT Bearing for Axleboxes and Insulated Bearing with Shields Ryutaro OKA High Load Capacity Cylindrical Roller Bearings Takuya OZU The Rust Guard Bearings of Highly Corrosion-resistant Bearings Takashi YAGI "SSB" of Sliding Aseismic Isolution Unit Multi-ply Rubber Norio ITOH and Takuya ISHII 44 54 62 68 74 80 84 90 96 100 Our Line of Award Winning Products "The Third Mono-Zukuri Products Creation Awards" Innovative Product Award Toshio OGUSU "The Japanese Society of Tribologists 2005" Technical Award "Hybrid Bearphite" a Sintered Metal Sliding Bearing Inserted with Plastic Masaki EGAMI Monodrive Two-Way Feeder 104 108 Our Line of New Products 116
NTN TECHNICAL REVIEW No.742006 Preface Introduction to this Special Feature Issue – NTN Products for Industrial Machinery Kenji OKADA Managing Director The current trend in the Japanese economy can be characterized as a steady recovery led by domestic demand and supported by the active investments of Japanese manufacturers in manufacturing plants and facilities. These are fueled by the recovering business performance of Japanese enterprises and the strong personal consumption of consumers. However, at the same time, we face anxieties that threaten our everyday lifestyles, including unprecedented high petroleum prices and environmental pollution problems that are difficult to resolve. In short, we are experiencing an era that is increasing in complication. In this age of dramatic change, NTN is now celebrating its 88th anniversary thanks to support from the users of NTN products. I would like to take this opportunity to express my deepest gratitude to them. NTN took part in the 23rd Japan International Machine Tool Fair (JIMTOF2006), which ran from November 1 to 8, 2006. To mark this occasion, we issued the Japanese edition of this publication, the NTN Technical Review No. 74 (2006). This year’s edition features topics about bearing products for industrial machinery, detailing how these products boast longer lifespans, lower running torques and compact sizes, which are merits that contribute to the realization of a society that promotes energy conservation and environmental protection. This publication describes NTN’s achievements in developing our latest technologies and novel products. The review begins with a contribution titled “Trends in Recent Machine Tool Technologies” by Kobe University Professor Toshimichi Moriwaki who is an international authority in the fields of production engineering and precision machining. Nine topics about NTN products for industrial machinery follow, including five topics about products for machine tools, three theses related to material and heat treatments, and two reports about NTN products that won awards in 2005— the Mono-Zukuri Component Grand Prize given for creation and manufacture of a novel product and the Engineering Award of the Japanese Society of Tribologists. In recent years, the environmental consciousness of the public has been growing steadily, and, as a result, the responsibilities of manufacturers to achieve a harmonious balance with the global environment have also become greater. Given this reality, we must remain deeply committed to efforts for reducing CO2 emissions to help control global warming and to efforts for realizing a recycling-oriented society. In consideration of these issues, many NTN products directly and indirectly support energy conservation and environmental protection. These include our rolling bearings and constant velocity joints, as well as our hydrostatic bearings, repair devices and other products for precision machinery. Rolling bearings are essentially products that help reduce rolling friction, so they can be considered to be products that conserve energy. Our other energy-saving products include NTN constant velocity joints and rolling guideways, which boast much improved transmission efficiency and NVH characteristics (noise, vibration and riding comfort) through incorporation of rolling elements into their sliding sections, as well as products for precision equipment that feature non-contact bearings as supporting mechanisms. Our commitments are not limited to energy-saving features for these fundamental products. We are fully committed to the development of new products in the fields of energy conservation and eco-friendly equipment that help reduce environmental impacts. For 88 years since our foundation, in the belief that “quality is the source of NTN brand power,” we have always conducted strict self-evaluations as we have developed novel products with the goal of “realizing quality that fulfills customer satisfaction.” With the motto, “For New Technology Networks ,” our philosophy is to contribute to international society by using NTN engineering abilities to provide novel, high-quality products that are relevant to fulfilling ever-diversifying market needs. In keeping with this, we promise to continue our commitment to realizing the confidence and satisfaction of our customers. -1-
Page 1 and 2: 88th Anniversary Special Issue; Pro
Page 3: R No.74 TECHNICAL REVIEW Special Is
Page 7 and 8: Trends in Recent Machine Tool Techn
Page 13 and 14: Development of a New Grease Lubrica
Page 21 and 22: High-Speed Tapered Roller Bearing f
Page 29 and 30: Minimum Quantity and Cooling Jet Lu
Page 31 and 32: Minimum Quantity and Cooling Jet Lu
Page 33 and 34: dmn17010 4 Sealed High-speed Angula
Page 39 and 40: Development of Aerostatic Bearing S
Page 41 and 42: Development of Aerostatic Bearing S
Page 43 and 44: Introduction of New Products for Ma
Page 49 and 50: Atmospheric Control Method for JIS-
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Atmospheric Control Method for JIS-
Page 57 and 58:
Atmospheric Control Method for JIS-
Page 59 and 60:
The Influence of Hydrogen on Tensio
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Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Technical Trends in Bearings for Of
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Page 73 and 74:
Unit Products for Office Equipment
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Unit Products for Office Equipment
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-73- Unit Products for Office Equip
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Honing Sludge and Electro Furnace D
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Ultra-Clean Bearing for Clean Envir
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Ultra-Clean Bearing for Clean Envir
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Development of New RCT Bearing for
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High Load Capacity Cylindrical Roll
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The Rust Guard Bearings of Highly C
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The Rust Guard Bearings of Highly C
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“SSB” of Sliding Aseismic Isolu
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“SSB” of Sliding Aseismic Isolu
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Monodrive Two-Way Feeder Flow direc
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Monodrive Two-Way Feeder MD20: 17.5
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"Hybrid Bearphite" a Sintered Metal
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Page 119 and 120:
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New Products Information PTJ High-A
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New Products Information Ultra-Low
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New Products Information Hub Bearin
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New Products Information Low-Emissi
Page 129 and 130:
New Products Information Advanced F
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NTN TECHNICAL REVIEW No.74 Printed
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