Single row or matched pairs of angular contact ball bearings

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Matched Pair Angular Contact Bearings, also called duplex bearings, are machined as matched sets. The pairs are furnished with the race faces ground to provide preload when installed. To accomplish this, a gap is provided between the inner races or outer race of the pair.

There are three types duplex bearing arrangements commonly used and they are Back to Back, Face to Face and Tandem bearing arrangement.

It is a type of duplex bearing arrangement where the two half are placed so that contact angle lines of the bearing converge inwardly. And these contact angle lines form ‘X’ shape, hence called as “X arrangement”.
In face to face arrangement a gap is provided between outer races and when installed, this gap is closed and producing a preload on the bearings. DF arrangement has lower moment stiffness, so they must be spaced sufficiently to provide resistance to moment load.
They can carry heavy radial loads, combined radial and thrust loads, reversing thrust load.

Bearing Number	Bore Dia	Outer DIa	Width	Size
17,000 mm x 40,000 mm x 12,000 mm NTN 7203BG Single row or matched pairs of angular contact ball bearings	3.3465 in	45 mm	Eccentric Collar	Uncoated
17 mm x 40 mm x 12 mm NTN 7203B Single row or matched pairs of angular contact ball bearings	70000	0.02 KGS	2.65	7mm
17 mm x 40 mm x 12 mm SNR 7203B Single row or matched pairs of angular contact ball bearings	16 lbs	Cast Steel	Round	6.7500 in
17,000 mm x 40,000 mm x 12,000 mm SNR 7203BGA Single row or matched pairs of angular contact ball bearings	1.2500 in	0.6250 in	2.2500 in	Steel
17 mm x 40 mm x 12 mm NTN 7203 Single row or matched pairs of angular contact ball bearings	140mm	Steel	Standard	5600
15,000 mm x 35,000 mm x 11,000 mm NTN 7202BG Single row or matched pairs of angular contact ball bearings	4.1250 in	1-23/32 in	3230 RPM	2.0625 in
15 mm x 35 mm x 11 mm NTN 7202B Single row or matched pairs of angular contact ball bearings	Steel	1.7500 in	Non-Metallic Bushing	0.7500 in
15 mm x 35 mm x 11 mm SNR 7202.BA Single row or matched pairs of angular contact ball bearings	3950 RPM	Cast Iron	Two-Bolt Base	15300 lb
15 mm x 35 mm x 11 mm NTN 7202 Single row or matched pairs of angular contact ball bearings	-65 to +250 &de	44300 lbf	2.1250 in	4.6250 in
12 mm x 32 mm x 20 mm NTN 7201BGD2 Single row or matched pairs of angular contact ball bearings	Non-Expansion Bearin	Accu-Loc	190 mm	Normal Duty
12,000 mm x 32,000 mm x 10,000 mm NTN 7201BG Single row or matched pairs of angular contact ball bearings	Spherical Roller	Non-Expansion Bearin	Cast Iron	2-15/16 in
50,000 mm x 90,000 mm x 20,000 mm NTN 7210BG Single row or matched pairs of angular contact ball bearings	--	Steel	12mm	0.02 KGS