Question

From first principles, deduce an expression for the friction moment of a collar thrust bearing, stating clearly the assumptions made.friction​

Answer 1

Answer:

For screw drives, all angular contact thrust ball bearings are designed for low friction operation.

Explanation:

• The frictional moment is affected by the bearing set's preload, rotating speed, seals, and lubricant quantity.
• In most cases, the initial torque is double the frictional moment.
• In the product table, they're listed.
• Apply to unmounted bearing sets that will function at modest speeds and have two bearings placed back-to-back or face-to-face.
• The frictional moment of bearing sets with three or four bearings is larger than that of sets with two bearings.
• Multiplying the values yields the frictional moment for these bearing sets.
• In the product table, they're listed.
• Apply to bearings that have yet to be fitted and will be used at modest speeds.