Q Closed drawn stainless steel end coverW Keyed outer flyweight for safety. Adjustable inner flyweight.E Etched and easily legible scale for infinitely variable adjustment of centrifugalforce. Scale lines marked at 5 % increments.R Labyrinth shaft sealT End covers sealed with thick round white silicon O-rings – 100 % sealedagainst dust and moisture.Y Heavy special purpose cylindrical roller bearings with increased internalclearance and crowned inner rings. Lubricated for life - maintenancefree design.U Heavy bearing housing, supports the transmission of centrifugal forcethrough to the frame.I Electrical components suitable for use under heavy vibration with special windingepoxy impregnation.O Firmly integrated cast-in terminal box to withstand heavy stress. Dust and watersprayproof.P Robust casing totally enclosed{ Casing with cast-in lifting lugs for safe and easy mounting in any position.Power Supply: Voltages from 115 to 690 V in 50/60 hertz. Acceptable foruse with Variable Frequency Drives.Number of Poles: Standard: 4, 6, and 8 poleEnclosure Protection: IP 66Thermal class: F (155 °C) according to DIN EN 60034-1Tropical insulation: StandardBearings: FRIEDRICH/Vimarc® vibrator motors have been produced maintenance-free for over 50 years with great success. The mounted cylindricalroller bearingswith high carrying load and increased bearing play are factory-lubricated for life with a special grease. Regreasing can cause errors suchas soiled