68 Form GHS extra flat height, length to DIN and extended Form GHV extra flat height, solid carbide point with safety core sa•co® LH d2 D LC L G H Carbide Dead Centres, Half Centre 60° with Draw-Off Thread Form GHS – GHV Out-of-roundness ≤ 0.8µm. Morse taper hardened for protection from damage. Quality features see page 62/63. „Roundness achieves roundness“ – Grinding test with standard centres from BRUCKNER test conditions cylindrical grinding machine STUDER S33 workpiece 100Cr6, 62 HRC, ∅ 35 mm, un-ground centre DIN 332A BRUCKNER 2804H in the headstock Out-of-roundness 0.42 µm BRUCKNER 2814H in the tailstock Out-of-roundness 0.48 µm workpiece out-of-roundness 0.36 µm Result: Out-of-roundness achieved with standard centres from BRUCKNER 0.36 µm. D LC L G H LH aco saco safety core from BRUCKNER ® s Form Morse taper ID.No. D d2 H LH LC L G GHS 3 2853/4.0-138 14 24.1 4.0 39.5 57.0 138 M27x1.5 4 2854/4.0-175 14 31.6 4.0 51.5 72.5 175 M36x1.5 4 2854/4.0-200 14 31.6 4.0 76.5 97.5 200 M36x1.5 5 2855/6.0-217 18 44.7 6.0 64.5 87.5 217 M48x1.5 5 2855/6.0-250 18 44.7 6.0 97.5 120.5 250 M48x1.5 Form Morse taper ID.No. D H LH LC L G GHV 3 2853.24V/H5-150 24.1 5 51.5 69 150 M27x1.5 4 2854.32V/H5-200 31.6 5 76.5 97.5 200 M36x1.5 4 2854.32V/H9-200 31.6 9 76.5 97.5 200 M36x1.5 Draw-off nut see page 67
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