Roller bearing for machine tool spindle has ring with higher coefficient of thermal expansion than outer ring

• Main Author: MASUCH, HORST
• Format: Patent
• Language: English; German
• Published: 22.03.2007
• Subjects: BEARINGS; BLASTING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

A single-line angular radial roller bearing supports a machine tool fixed bearing (21). The roller bearing consists essentially of an inner ring (2) and an outer bearing ring (3) within the spindle housing (25). The two rings are separated by ball roller (9) races (7, 8) with edges defined by should...