The compact size in combination with the highly precise production geometry of the integrated sprags result in outstanding performance characteristics.
The contact surfaces on the clamping curves close in linear contact to a defined clamping angle α with the rotationally symmetric connecting parts.
The functional criteria of a sprag type freewheel clutch must be met along the clamping curve:
μ = static friction coefficient
α = clamping angle
If the tangent of the clamping angle is smaller than the coefficient of static friction µ, the sprags will be in static friction contact with the connecting parts when a load is applied.
bearing steel 100 Cr6 (material number: 1.3505)
Hardness: HRC = 60+4 (HV = 700+100)
The geometry of the clamping curve is designed for connecting parts made of steel – raceways in other materials are not permissible.
The small sprag size permits high sprags density and thus maximum performance in a minimum of space. The low inertia of sprags also makes it possible to achieve extremely high indexing frequencies of up to 60 Hz.
To achieve maximum torque capacity with the larger sprags series 8000, the profile was adjusted with a slightly higher clamping angle. Due to the center of gravity’s position the design is not lifting off and provides indexing reliability even in high speed applications.