Which of the following bearings are most suitable for supporting high axial thrust?

Concept:

• Tapered roller bearings are capable of carrying both radial and axial loads. 
• They are often used in pairs to take the thrust load in both directions.
• The taper roller bearing consists of rolling elements in the form of a frustum of cone. They are arranged in such a way that the axes of individual rolling elements intersect in a common apex point on the axis of the bearing.
• The taper roller bearing consists of rolling part and inner and outer raceways in the form of conical surfaces. The outer raceway or outer ring is called ‘cup’ and inner raceway is called ‘cone’.

Needle roller bearing

• These bearings are relatively slender and completely fill the space so that neither a cage nor a retainer is needed.
• These bearings are used when heavy loads are to be carried with an oscillatory motion.
• For example, piston pin bearing in heavy-duty diesel engines where the reversal of motions tends to keep the roller in correct alignment.

Additional Information

The following Points are to be noted about the load-carrying capacity of different types of rolling contact bearings: 

• Thrust Ball Bearing: Thrust ball bearing cannot take the radial load.
• Taper Roller Bearing: can take heavy radial and thrust loads.
• Angular Contact Bearing: can take both radial and thrust loads.
• Cylindrical Roller Bearing: can take radial load only
• Deep Groove Ball Bearing: takes load in radial as well as an axial direction