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
55 mm x 100 mm x 21 mm SNR 7211.BGA Single row or matched pairs of angular contact ball bearings	50000	SAE 841, CT-1000-K26	-35 °F to +	None
50 mm x 90 mm x 20 mm NTN 7210BL1G Single row or matched pairs of angular contact ball bearings	0.02 KGS	22311-e1-c4-qbl	C4	Steel
85,000 mm x 150,000 mm x 28,000 mm NTN 7217BG Single row or matched pairs of angular contact ball bearings	7200-b-jp-ua-fag	0.177	0.03 KGS	Open Type
65 mm x 120 mm x 23 mm NTN 7217BGC3 Single row or matched pairs of angular contact ball bearings	8.29 in	W-000	9.438 in	Steel
85 mm x 150 mm x 28 mm NTN 7217B Single row or matched pairs of angular contact ball bearings	85 mm x 150 mm x 28 mm	-	-	-
85 mm x 150 mm x 28 mm NTN 7217 Single row or matched pairs of angular contact ball bearings	-250 to 550 ºF	JLON 4200	Click here	30000
80 mm x 140 mm x 26 mm NTN 7216BL1G Single row or matched pairs of angular contact ball bearings	80 mm x 140 mm x 26 mm	-	-	-
50 mm x 90 mm x 20 mm SNR 7210.BG.M Single row or matched pairs of angular contact ball bearings	Contact/Lip	ANSI/ABMA STD 9	Expansion Bearing &#	Powder Coated
50 mm x 90 mm x 20 mm SNR 7210.BGA Single row or matched pairs of angular contact ball bearings	81.5 kN	Single Seal	Uncoated	24 mm
80,000 mm x 140,000 mm x 26,000 mm NTN 7216BG Single row or matched pairs of angular contact ball bearings	5.6200 in	Uncoated	Round	UL, AFBMA, AGMA, ASM
80 mm x 140 mm x 26 mm NTN 7216B Single row or matched pairs of angular contact ball bearings	1700 RPM	9-1/8 in	Spherical Roller	Powder Coated
80 mm x 140 mm x 26 mm NTN 7216 Single row or matched pairs of angular contact ball bearings	ABEC 1 (ISO Cla	Uncoated	C0	40 °