51 High Performance Live Centres M Series Types MR, MRG with tailstock sleeve support ring and patented safety spigot Centrepoint 60°, 75°, 90° Runout Type MR max. 0.008 mm Type MRG max. 0.004 mm Application If, for very high workpiece weights the load capacity on the mounting taper is insufficient, the centre is additionally supported on the tailstock sleeve with a support ring. A patented safety spigot safeguards the screw fastening of the centre housing to the support ring. The support also diminishes vibration and enhances the centre life. For operations with heavy coolant flows we recommend the use of our supplementary seal (page 10) 50 40 100 200 300 400 500 1000 2000 300 40 50 100 200 500 400 1000 2000 30000 20000 10000 5000 4000 3000 2000 1500 2000 1000 750 1500 2500 5000 10000 15000 10000 1500 2000 3000 4000 5000 30000 20000 Radialbelastung daN Werkstückgewicht daN Axialbelastung daN Drehzahl 1/min Drehzahl 1/min 30 20 30 20 3 2 1 RP AP 2 1 50 40 100 200 300 400 500 1000 2000 300 40 50 100 200 500 400 1000 2000 30000 20000 10000 5000 4000 3000 2000 1500 2000 1000 750 1500 2500 5000 10000 15000 10000 1500 2000 3000 4000 5000 30000 20000 Radialbelastung daN Werkstückgewicht daN Axialbelastung daN Drehzahl 1/min Drehzahl 1/min 30 20 30 20 3 2 1 RP AP 2 1 Radial and axial loads for a bearing life of 2000 operating hours (see calculation example page 11) Radial – Types MR, MRG Axial – Types MR, MRG When inquiring/ordering please indicate: 1. Point angle of the centre 2. For design with support ring the tailstock sleeve diameter within 0.01 mm LD DP safety spigot r.p.m. r.p.m. workpiece weight daN radial load daN axial load daN DG DF D LA ∝ Type MR ID.No. 190006MR 190007MR 190080MR 190081MR 230100MR 230101MR Type MRG ID.No. 191006MR 191007MR 191080MR 191081MR 231100MR 231101MR Taper size MT 6 MT 7 Metr. 80 1:20 Taper 80 1:10 Metr. 100 1:20 Taper 100 1:10 D 80 80 80 80 100 100 DG 190 190 190 190 230 230 LA for a∝ standard 60° 77 77 77 77 88 88 optional 75° 60 60 60 60 68 68 90° 49 49 49 49 54 54 LD 157 164 164 164 201 201 DF 230 230 230 230 230 230 DP 100-180 100-180 100-180 100-180 100-180 100-180 Workpiece weight max. daN* 10000 15000 15000 15000 20000 20000 r.p.m. max.* 1200 1200 1200 1200 1100 1100 Radial/axial load graph RP1/AP1 RP2/AP1 RP2/AP1 RP2/AP1 RP3/AP2 RP3/AP2 Supplementary seal ID.No. V80 V80 V80 V80 V100 V100 *observe the load graphs
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