Millwright Level 2 – Bearings exam 2023/2024 with 100% correct answers

What are the principle parts of a friction bearing housing? - correct answer Base, Base bolt slots, cap and cap bolt holes. What are friction bearing housings made from adn what factors influence the choice of housing? - correct answer Cast Iron, Cast Steel, Fabricated Steel. Choice depends on the Load, The Rotational Speed, the Direction of Pull and the Support Design How are friction bearing dimensions expressed? - correct answer In a fraction of their nominal size. Do all new bearings of the same shaft size have the same base-to-eye measurement? - correct answer If they are from the same manufacturer. What factors influence the choice of bearings? - correct answer Load, Rotational Speed, Direction of the Pull and support Design What are the applications for the following bearings? a)Solid Bearings b)Split bearings c)Angle bearings d)Integrated Bearings - correct answer a) Where Speed and Load are low. Where load is applied on the top part of the bearing. b) Where load is applied on the bottom portion of the bearing. Different bolt numbers for loads. c)When load is applied parallel to, or at a slight angle to, the horizontal. Or when the bearing is mounted on the vertical support d)Where the bearings are an integral part of the machine. How does friction bearing joint design affect its integrity? - correct answer Position of the top half may affect the bearing tolerances and load positions. What qualities should a good bearing material have? (5 points) - correct answer Softer than the shaft material, low coefficient of friction, wear-resistant, a good heat conductor and remain relatively stable with heat chang