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 ground steel bush with bolt and nut.
Swivel bracket with bolt hole and front lock
Swivel bracket with bolt hole. 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 obtained by moulding and duly rivetted. The front brake is necessary to lock wheel and top plate rotation.