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Wheel description Vulkollan polyurethane tread; hardness 93 +/-2 Shore A. Cast iron centre. Ball bearing bore or bore without bearings The housing is obtained by moulding and turning and contains ball bearings series Z. The hub is available also without bearings. Axle Axle composed of ground steel bush with bolt according to UNI EN 24017 and nut according to UNI EN 24032. Swivel top plate bracket Swivel top plate bracket. The plate, the ball rice ring and the fork are made of pressed steel zinc plated finish; swivel actions: double ball greased race with dust protection granted by the particular plate configuration. The king pin is integral with the top plate and duly rivetted. |