No.1022E 2026Special Edition on the Technologies that Support Manufacturing and Manufacturing Equipment Development of HIGHABILY-JFAST Bearings for Machine Tool Spindles |
| Category | TECHNICAL REPORT |
|---|---|
| Author | S. NAGASE Machine Tools Engineering Dept., Machine Tools & Manufacturing System Business Unit N. KAGA Industrial Solutions Engineering Dept., Industrial and Bearing Business Unit Y. SHINTATE Experimental Validation Dept., Industrial and Bearing Business Unit |
| Abstract | Bearings for high-speed rotating machine tool spindles are typically lubricated with oil-air systems. However, these systems continuously consume air during operation, leading to increased energy usage. To solve this issue, JTEKT developed a new bearing series HIGHABILY-JFAST that expands the high-speed rotation area of grease lubrication without consuming air, saving energy and reducing CO2 emissions. The design of the cage shape and material for grease lubrication has been optimized, resulting in a reduction of bearing temperature rises by approximately 30% for angular contact ball bearings and by approximately 50% for cylindrical roller bearings. The lifespan of the grease has also been improved by approximately 20% for angular contact ball bearings and by approximately 50% for cylindrical roller bearings. |
| Keyword | machine tool, rolling bearing, temperature rising, grease lubrication |
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Summary:8,2026
Summary:9,2025-8,2026