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
65 mm x 140 mm x 33 mm NTN 7313B Single row or matched pairs of angular contact ball bearings	Set Screw	7316577414700	0.9375 in	Two-Bolt Flange
65 mm x 140 mm x 33 mm NTN 7313 Single row or matched pairs of angular contact ball bearings	D52	65 mm x 140 mm x 33 mm	-	-
60 mm x 130 mm x 31 mm NTN 7312BL1G Single row or matched pairs of angular contact ball bearings	1.3750 in	Round	0.6250 in	029176003073
60 mm x 130 mm x 31 mm SNR 7312.BG.M Single row or matched pairs of angular contact ball bearings	Standard Duty	Non-Expansion Bearin	2538 lb	3.2500 in
60,000 mm x 130,000 mm x 31,000 mm NTN 7312BG Single row or matched pairs of angular contact ball bearings	50100	4.97	Open Type	Standard
65 mm x 140 mm x 33 mm SNR 7313.BGA Single row or matched pairs of angular contact ball bearings	With Flanges	8230 lbf	37 mm	Open
60 mm x 130 mm x 31 mm SNR 7312.BA Single row or matched pairs of angular contact ball bearings	2000 RPM	6 in	Split Flange Mount	Lubrication Fitting
110 mm x 200 mm x 38 mm NTN 7222BL1G Single row or matched pairs of angular contact ball bearings	Non-Expansion Bearin	Spherical Roller	Uncoated	10.4375 in
60 mm x 130 mm x 31 mm SNR 7312.BGA Single row or matched pairs of angular contact ball bearings	95 mm	811, 894, 893, 812	Thrust Washer	50 mm
110,000 mm x 200,000 mm x 38,000 mm NTN 7222BG Single row or matched pairs of angular contact ball bearings	Cast Iron - Nickel P	5-7/8 in	1.9375 in	4-5/8 in
110 mm x 200 mm x 38 mm NTN 7222B Single row or matched pairs of angular contact ball bearings	1.3750 in	1.7500 in	2-16TC ATO	Skwezloc
110 mm x 200 mm x 38 mm NTN 7222 Single row or matched pairs of angular contact ball bearings	Flanged Sleeve	5 mm	10 mm	LFF