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Heidenhain: Angle Encoders (ROD Series)
The term angle encoder is typically used to describe encoders that have an accuracy of better than ± 5“ and a line count above 10000. In contrast, rotary encoders are encoders that typically have an accuracy of more than ± 10“. Angle encoders are found in applications requiring precision angular measurement to accuracies within several arcseconds.
Examples:
Rotary tables on machine tools
Swivel heads on machine tools
C-axes of lathes
Measuring machines for gears
Printing units of printing machines
Spectrometers
Telescopes
Angle encoders with integral bearing, hollow shaft and integrated stator coupling
Because of the design and mounting of the stator coupling, it must only absorb that torque caused by friction in the bearing during angular acceleration of the shaft. RCN, RON and RPN angle encoders therefore provide excellent dynamic performance. With an integrated stator coupling, the stated system accuracy also includes the deviations from the shaft coupling.
Further advantages:
Compact size for limited installation space
Hollow shaft diameters up to 100 mm for leading power cables, etc.
C axes on lathes
Simple mounting
Angle encoders with integral bearing, for separate shaft coupling
ROD angle encoders with solid shaft are particularly suited to applications where higher shaft speeds and larger mounting tolerances are required. The shaft couplings allow axial tolerances of ± 1 mm.
Angle Encoders with Integral Bearing
HEIDENHAIN angle encoders with integral bearing are characterized in particular by very high system accuracy. The integral bearing in the encoders eliminates any effect on measuring accuracy from the bearing of the machine components.
The integrated stator coupling in the RCN/RON/ECN series encoders guarantees lowest possible error from the effect of tolerances in the shaft coupling. All angle encoders with integral bearings feature shaft seals that ensure resistance to contamination (IP64 protection). These encoders enjoy an entire spectrum of possible applications in machine tools, measuring machines, telescopes, printing machines and many other areas.
ROD Features:
Incremental measuring method
Solid shaft
Separate shaft coupling for large mounting tolerances
System accuracy does not include the deviation caused by the shaft connection
Typical field of application: Rotational axes
ROD 200 Series
For separate shaft coupling
System accuracy ± 5”
ROD 780/ROD 880 Series
System accuracy ± 1” or ± 2”
Model No.: ROD 220, ROD 270, ROD 280, ROD 780, ROD 880