Do ball bearings need a cage?

The ball bearing can only work if the balls are kept separated and evenly spaced throughout the races. Touching each other would produce friction, and uneven spacing would cause the bearing to be weak under loads from a certain direction. So most bearings use cages to separate and evenly space the balls.

How bearing cages are made?

Solid cages are made from brass, steel, light metal or textile-laminated phenolic resin. They are manu- factured either by machining, by injection moulding of plastic materials or by sintering metals.

What is the purpose of a bearing cage?

The cage of a rolling bearing, sometimes referred to as the retainer or separator, performs three basic functions; to space the rolling elements, retain the roiling elements itself or in conjunction with one of the bearing rings, and in many designs to guide the rolling elements on their correct rolling path.

Why do bearing cages fail?

There are numerous causes for cage damage. Some of the more common ones include vibration, excessive speed, wear, or blockage.

Which is better brass cage or steel cage?

Brass cage bearings are far most reliable than steel cage bearings. Brass cage bearings produce very less friction as compared to steel cage bearings. Although both can get rust, but the life of brass and less weight make its job more effective.

Which bearings dont need cage?

Radial ball bearings without a retainer (cage)

What is a caged ball bearing?

The ball bearing cage (also known as a ball bearing retainer or ball separator – these are used interchangeably), is the component in a ball bearing that separates the balls, maintains the balls symmetrical radial spacing, and in most cases, holds the bearings together.

Which is better a steel cage or brass cage bearing?

Several recent studies have shown that machined high-tensile brass cages have several advantages over pressed steel, aluminium and non-metallic bearing cages. Brass cages offer high rigidity, high strength and can be used at high temperatures.

How do you reduce bearing temperature?

Air flow: In systems that do not use recirculating oil, most bearing cooling is done through convection from the bearing housing to the ambient air. Because the convection coefficient is much higher for moving air than for still air, bearing temperatures can be significantly lowered by moving air around the housing.

Why brass cage is used in bearing?

Brass cages offer high rigidity, high strength and can be used at high temperatures. They also offer the key features of absorbing lubricant and performing well in aggressive environments where lubrication is marginal.

Why is brass used in bearings?

Its relatively high hardness and good impact resistance make it widely used in steel plants for such applications as roll-neck bearings. It is also used in lathes, instruments, household appliances, diesel rocker-arm bushings, automotive piston-pin bushings, pumps, and trunnion bearings.

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