Ball Bearings

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A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least three races to contain the balls and transmit the loads through the balls. In most applications, one race is stationary and the other is attached to the rotating assembly (e.g., a hub or shaft). As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were sliding against each other.

Ball bearings, or deep-groove bearings, extend the working life of equipment by enabling wheels, pulleys, and other rotating parts to reduce friction and move smoothly. Ball bearings have a series of round balls encased in a housing and support high axial or low-to-moderate radial loads. Axial (thrust) bearings support loads parallel to the axis, such as those exerted by a table supporting a weight.

Bearing Number	Bore Dia	Outer DIa	Width	Size
BEARINGS LIMITED 1657-ZZ Ball Bearings	50.8 mm	14.3 mm	96.8 mm	1/2
BEARINGS LIMITED 16004-ZZ Ball Bearings	45.000 mm	9000 rpm	33200 N	1.00 mm
BEARINGS LIMITED 3204-2RS Ball Bearings	Shield & Seal	1600 rpm	105.000 mm	228000 N
BEARINGS LIMITED R12-ZZ Ball Bearings	3400 rpm	120.000 mm	2.00 mm	215.0000 mm
BEARINGS LIMITED R8-2RS BULK Ball Bearings	0.016 kg	0.3 mm	25 mm	20 mm
BEARINGS LIMITED R4-2RS Ball Bearings	13700 kN	6 mm	489 mm	400 mm
BEARINGS LIMITED R22-ZZ Ball Bearings	Removable Metal Shie	7000 rpm	1.00 mm	4800 rpm
BEARINGS LIMITED R20-2RS Ball Bearings	25 mm	0.6 mm	2.2 kN	200 N·m/mrad
BEARINGS LIMITED FR8-ZZ Ball Bearings	AN 17	EPR 11	333.375 mm	TER 188
BEARINGS LIMITED FR4 Ball Bearings	0.8 mm	4 mm	0.3 mm	1 mm
BEARINGS LIMITED 6913-2RS Ball Bearings	78 max	0.7 kg	85 mm	45
BEARINGS LIMITED 6911 Ball Bearings	6000 rpm	4500 rpm	39.70 mm	45.000 mm