Tretkurbellager fuer Fahrraeder

摘要

1288794 Bearings MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 26 Nov 1969 [26 Nov 1968 1 April 1969] 57869/69 Heading F2A A bicycle bottom bracket bearing assembly comprises a shaft 60 supported in a bracket 1 by two angular contact ball bearings ; one inner race member 54 is axially fixed, whilst the other 20 is axially movable along the shaft, and a spring 61 urges them into engagement with their respective bearing balls 8, 81. The member 54 is fixed by means of two semi-circular members 52 held in a, groove 51 in the shaft by a tubular sleeve 53; in alternative embodiments, the member 54 and/or the member 52 are formed integrally with the shaft. The outer race member 621 and the backing member 69 have self-aligning surfaces 65, 70. The outer ends of the assembly may be provided with oil seals.