TTR ERA 4200 Scale drum for incremental modular angle encoder without integral bearing Line count: 28000 Grating period: 20.000 µm Accuracy of the graduation: ± 2.5 '' Geometry of drum: Outside Ø 178.55 mm, inside Ø 120 mm, hole circle Ø 140 mm, 6 holes Ø 5.5 mm, with centering collar Reference mark: 1 reference mark Mechanical permissible speed without mechanical fault exclusion: 8750 min-1 Mechanical permissible speed with mechanical fault exclusion: 4500 min-1
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