FIELD: transport.
SUBSTANCE: invention relates to machine building. Hub device 1 for disk brake 2 may be attached by attachment section 6 to transport facility wheel and has multiple keys 7 to retain brake disk on hub circumference. Brake disk has central bore with axial grooves to engage with said keys. Every key 7 has section 8 extending from attachment section 6 to form clearance between them and outer surface 10 of shell edge 11 (opposed to said attachment section) of thrust bearing 12 (resting on attachment section) of hub device 1 with its extending sections intended for retaining brake disk 2.
EFFECT: decreased hub heating and lower costs.
15 cl, 6 dwg
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