Angle encoders can have one of three different mechanical designs:
Angle encoders with integral bearing, hollow shaft and integral stator coupling
Because of the design and mounting of the stator coupling, it has only to absorb that torque resulting from friction in the bearing during angular acclearation of the shaft. RON, RPN and RCN angle encoders therefore provide excellent dynamic performance. With integral stator coupling, the stated system accuracy also includes the deviations of the shaft coupling.
Other advantages:
Small size and low mounting space requirement
Hollow shaft diameters to 60 mm for supply lines, etc. to be led through
Easy mounting
Angle encoders with integral bearing for separate shaft coupling
ROD angle encoders with solid shaft are particulary suited to applications where higher speeds and larger mounting tolerances are required. The shaft couplings allow axial tolerances of ± 1 mm.
Angle encoders without integral bearing
ERA and ERO angle encoders without integral bearing (modular angle encoders) are intended for integration in machine elements or applications with the following requirements:
Large hollow shaft diameters (up to 10 m with scale tape)
High rotational speeds up to 40 000 rpm
No additinal starting torque due to shaft gaskets
Segment angles
The ERM modular magnetic encoder is particulary suited to applications with lower accuracy requirements, such as the C axis on lathes or auxiliary axes.
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