Rotor For MK-Dent Basic Line Large Head Model: RT-RMKBL Replacement part for MK Dent Basic Line large head push button part number TC2021 HC2001 / HC2002 / HC2011 / HC2012 / HC4011 / HC6011 from serial numbers beginning with F HC4021M up to serial numbers beginning with E HC4021K up to serial numbers beginning with F Quiet — The rotor is balanced ! Long Life — Build with Angular Contact Ceramic Ball Bearings ! About Spindle Kavo Type (Carbide Bush): Chuck grid power more than 3.50KG, durable life time with carbide bush, warranty 6 months. NSK Clamp Pad Type: Chuck grid power more than 2.20KG, durable working life time, warranty 6 months. Kavo Type (Steel Bush): Chuck grid power more than 3.50KG, warranty 3 months. Economic Type: Available in Kavo and NSK type, no warranty. About Bearing Germany/Japan bearing: Apply Myonic/NSK/GRW angular contact bearings, quiet and durable, works 9-12 months or above. NSK quick stop bearing: Apply NSK quick stop bearing, turbine stop in a second, quiet and durable, works 9-12 months or above. Angular contact bearing: Apply the best Chinese angular contact bearing, quiet and durable, quiet and durable, works 6-12 months or above. Radial (deep groove）Bearing: Apply good quality Chinese deep groove bearing, works around 6-12 months or above. Economic type bearing: Apply economic type deep groove bearing, works around 3-9 months or above. The life time of the bearings are variously according to the use frequency and maintenance. The best bearing may fail in very short time without maintenance or bad maintenance oil. First of all, the most important thing is to mount the rotor in the correct way.
