We have four SpeedVac concentrators in almost continuous use in our lab. Every so often one of the rotors cease. Replacement units are not inexpensive. New replacement bearings are cheap, but the problem is disassembling the rotor unit to get the old ceased bearings off the shaft. Does anyone have any tips or suggestions about how the ceased rotors can be (easily) disassembled? Kym Kym Francis Faull, Ph.D. Director, Pasarow Mass Spectrometry Laboratory Jane and Terry Semel Institute for Neuroscience and Human Behavior at UCLA Professor Emeritus on Recall, Department of Psychiatry and Biobehavioral Sciences David Geffen School of Medicine at UCLA Telephone: (310) 206 7881 (office) Telephone: (310) 206 7886 (laboratory) Facsimile: (310) 206 2161 Electronic mail: <email obscured> <email obscured>>