Millwright. Bearings Correct Questions & Answers!!

Two kinds of flat bearings differ from there housings they are A. Solid end of friction B. Tight and tapered C. Scored and roller D. Solid and split - ANSWER D. Solid and split **The choice of bearing tens of the load rotational speed direction of Pull and support design solid bearings and split bearings are fiction bearings You can remove bearing cups from a housing using a cup puller (inside puller) provided that? a. it is a tapered roller bearing b. it is an anto froction bearing c. it is a bearing on a positive set d. the jaws can be inserted behind the shoulder - ANSWER d. the jaws can be inserted behind the shoulder Main difference between adapter sleeve and withdrawal sleeve? - ANSWER withdrawal sleeve used on solid bored bousing and adapter sleeve used on split bored housing A replacement bearing sucha s tapered roller or angular contact bearing has it end float controlled by? a. collar b. shaft shoulder c. chamfer d. shims - ANSWER d. shims When installing a hot bearing on a shaft move it __________ into its final position. a. slowly b. in a rolling fashion c. clockwise d. quickly - ANSWER d. quickly When mounting spherical roller bearings the first step is to? a. check the reduction is radial clearance of the bearing to ensure proper installed clearance exists b. check the reduction is radial clearance of the bearing to ensure proper installed clearance exists c. The outer face of the sleeve needs to be tapered d. check the initial clearance by inserting a feeler gauge between top rollers and outer ring e. check the initial clearance by inserting a feeler gauge between top rollers and inner ring - ANSWER d. check the initial clearance by inserting a feeler gauge between top rollers and outer ring Mounted tapered Bore bearings using hydraulic nut--check the reduction is radial clearance of the bearing to ensure proper installed clearance exists Ball bearings using tapered SLEEVE--check the reduction is radial clearance of the bearing to ensure proper installed clearance exists The use of a tapered adapter sleeve allows you to? a. rotate at higher speeds b. rotate at higher velocity c. increase end play d. mount a bearing anywhere on a standard shaft - ANSWER d. mount a bearing anywhere on a standard shaft Thrust control can be obtained by using a single taper roller bearing or a singular contact bearing on one end and? a. adjusting shrink b. using matched duplex on other end of shaft c. allowing other end to float d. allowing other end to travel - ANSWER c. allowing other end to float Thrust adjustment for angular contact or tapered bearings are made in two ways. 1. adjust inner race or cone when the outer race or cup is fixed in the housing 2. adjust snap ring and end play 3. adjust outer race or cup when the inner race or cone id fixed on the shaft 4. locate bearing stabalizer and adjust face plate a. 1,2 b. 2,3 c. 1,3 d. 2,4 - ANSWER c. 1,3 In most cases the outer race is adjusted by means of an end cover or shims Adding shims increases end float removing shims decreases end float How do you prevent end float in fixed bearings? a. only one bearing on any shaft assembly should be fixed axially in the housing b. both bearings on any shaft assembly should be fixed axially in the housing c. install with shrink fit d. install with press fit - ANSWER a. only one bearing on any shaft assembly should be fixed axially in the housing. Generally better to "held" or fix bearing on drive end and all other bearings should have axial clearance to allow movement. This allows for expansion and contraction (free or flaoting bearings) This stretches the inner ring of the bearing and reduces the internal clearance a. press fit b. shrink fit c. seizing d. press or shring fit - ANSWER d. press or shrink fit In replacing a tapered roller or angular contact bearing,