1. When to change oil?
2. How much oil should be changed? If the oil is changed too little, the bearing will be scrapped in advance; if the oil is changed too much, the friction roller will be in trouble or endanger the power coil and winding for a long time. So how to maintain the idler?
In fact, the way to decide when to lubricate and when to stop oil injection is very simple: to establish a baseline, to make an observation plan and to monitor when to inject oil. A base line of friction idler is formulated to reflect the decibel strength under normal operation, no visual errors and sufficient lubrication conditions.