PACKAGE FOR 50PCS  Micro switch push button Tactile Switch Momentary tact SMD 4.8X4.8X0.55mm  SEND WITHIN 2DAYS AFTER PAYMENT RECEIVED. Normally can be seen used in operating various devices such as...

  1.STRUCTURE OF TAPERED ROLLER BEARINGS Tapered roller bearings consist of outer ring, inner ring,rollers and a cage. This bearing contains tapered rollers for its rolling element which are guided...