CONTI screws are produced with controlled straight lines.
Screws straightness is appraised by measuring the variation of the deflection “ƒ” when the screws is supposed at the ends on two constraints and rotated slightly. For example, the screw KKA TR 30 A (threading TR 30x6 with start) has straightness of 0.3 on 3.000 mm. This means that a screw TR 30x6 3000 mm long resting on two constraints at the ends and slightly rotated displays a camber variation “Dƒ” less than 0,3 mm at all point of the screw.
See drawing A good screw straightness gives operation with load always centred on the axis, hence uniform distribution of surface contact pressure between the screws and nut with resulting smooth running and regular rotation and traversing. |
Main features
Trapezoidal Threaded Spindles
Straightness
