Precision Ball Bearings

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Precision Ball Bearings are specifically designed with accuracy in mind for high-speed and precision applications. They are capable of high rotational speeds with low friction and noise.

Types of Precision Bearings

There are two different categories of high precision bearings:

Angular Contact Bearings: Optimized for very fast operation speeds, can hold heavy loads in the radial & axial direction. Must be purchased in sets & can only support axial loads in one direction.
Radial Ball Bearings: When axial force in both directions is needed and speed isn’t the most important factor for your application, then radial ball bearings are usually selected. These high precision bearings usually don’t need to be purchased in sets for preload.

Machine Parts That Use High Precision Bearings

Spindles
Metal cutting & woodworking spindles
Grinders
Vacuum pumps
Semiconductor components
High-speed rolling mills
Printers
Race cars
Turbochargers
And more

Bearing Number	Bore Dia	Outer DIa	Width	Size
1.378 Inch \| 35 Millimeter x 2.835 Inch \| 72 Millimeter x 0.591 Inch \| 15 Millimeter NACHI 35TAB07UP4 Precision Ball Bearings	3/8 in	SS	9001:2008 &	1/2 in
1.575 Inch \| 40 Millimeter x 2.835 Inch \| 72 Millimeter x 0.591 Inch \| 15 Millimeter NACHI 40TAB07UP4 Precision Ball Bearings	1.7500 in	4500 fpm	3.9380 in	0.544 lb
1.181 Inch \| 30 Millimeter x 2.441 Inch \| 62 Millimeter x 1.181 Inch \| 30 Millimeter NACHI 30TAB06DUP4 Precision Ball Bearings	0 m/s	0.0052 kg	20 mm	0.03
0.984 Inch \| 25 Millimeter x 2.441 Inch \| 62 Millimeter x 0.591 Inch \| 15 Millimeter NACHI 25TAB06UP4 Precision Ball Bearings	Two-Bolt Flange	MUC205-16	5.1250 in	Closed
0.984 Inch \| 25 Millimeter x 2.047 Inch \| 52 Millimeter x 0.591 Inch \| 15 Millimeter KOYO 7205C-5GLX2FGP4 Precision Ball Bearings	C4	In Stock	Open Type	220mm
2.165 Inch \| 55 Millimeter x 3.937 Inch \| 100 Millimeter x 0.827 Inch \| 21 Millimeter KOYO 7211C-5GLX2FGP4 Precision Ball Bearings	2.165 Inch \| 55 Millimeter x 3.937 Inch \| 100 Millimeter x 0.827 Inch \| 21 Millimeter	-	-	-
1.378 Inch \| 35 Millimeter x 2.835 Inch \| 72 Millimeter x 0.669 Inch \| 17 Millimeter KOYO 7207C-5GLX2FGP4 Precision Ball Bearings	29502-1611	-22 to 400°F	2.0860 in	3926904590.US
0.787 Inch \| 20 Millimeter x 1.85 Inch \| 47 Millimeter x 0.551 Inch \| 14 Millimeter KOYO 7204C-5GLX2FGP4 Precision Ball Bearings	B6	113 mm	90 mm	30 mm
1.772 Inch \| 45 Millimeter x 3.346 Inch \| 85 Millimeter x 0.748 Inch \| 19 Millimeter KOYO 7209C-5GLX2FGP4 Precision Ball Bearings	21000 rpm	Round	40 mm	8865590657858
1.181 Inch \| 30 Millimeter x 2.441 Inch \| 62 Millimeter x 0.63 Inch \| 16 Millimeter KOYO 7206C-5GLX2FGP4 Precision Ball Bearings	Contact/Lip	Non-Expansion Bearin	5-1/8 in	1.8750 in
1.969 Inch \| 50 Millimeter x 3.543 Inch \| 90 Millimeter x 0.787 Inch \| 20 Millimeter KOYO 7210C-5GLX2FGP4 Precision Ball Bearings	MUC209-27	7.0625 in	2150 lbf	304 Cast Stainless S
1.575 Inch \| 40 Millimeter x 3.15 Inch \| 80 Millimeter x 1.417 Inch \| 36 Millimeter NACHI 7208CYDUP4 Precision Ball Bearings	10000 lbs	2.0000 in	Chrome Steel	2.2500 in