Roller description
TR polyurethane tread; hardness 95*/-2 Shore A. Weldless steel centre.
Ball bearing bore or bore without bearings
The housing is obtained by mechanical turning of a steel tube and contains ball bearings series Z. The hub is available also without bearings.
Axle
Axle composed of 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. In brackets for wheels diameter 60/75/100, the king pin is integral with the top plate and duly rivetted. In brackets for wheels diameter 125, the king pin is obtained by moulding and duly rivetted.