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
45,000 mm x 85,000 mm x 19,000 mm NTN 7209BG Single row or matched pairs of angular contact ball bearings	Double-Row Filling S	45,000 mm x 85,000 mm x 19,000 mm	-	-
50 mm x 90 mm x 20 mm NTN 7210B Single row or matched pairs of angular contact ball bearings	5.5000 in	Spherical Roller	662939010583	Aluminum
45 mm x 85 mm x 19 mm NTN 7209BL1G Single row or matched pairs of angular contact ball bearings	1/2	Set Screw	UC208-24MZ2RF	5-5/32" to
50 mm x 90 mm x 20 mm NTN 7210 Single row or matched pairs of angular contact ball bearings	-6g-LH	8483.30.8055	8.75 mm	Carbon Steel
45 mm x 85 mm x 19 mm SNR 7209.BA Single row or matched pairs of angular contact ball bearings	Non-Expansion Bearin	Two-Bolt Base	207	6.5000 in
45 mm x 85 mm x 19 mm NTN 7209B Single row or matched pairs of angular contact ball bearings	0.5118 in	5.2500 in	053893629902	Steel
40 mm x 80 mm x 18 mm NTN 7208BL1G Single row or matched pairs of angular contact ball bearings	BFX200TC	B4-12	Lubrication Fitting	Set Screw
45 mm x 85 mm x 19 mm NTN 7209 Single row or matched pairs of angular contact ball bearings	0.0900 in	0.8750 in	Uncoated	12700 lbf
45 mm x 85 mm x 19 mm SNR 7209.BG.M Single row or matched pairs of angular contact ball bearings	35 mm	27 kN	0.29 kg	6300 r/min
45 mm x 85 mm x 19 mm SNR 7209.BGA Single row or matched pairs of angular contact ball bearings	20900 lb	Three-Bolt Bracket S	ANSI/ABMA STD 1	1-7/16 in
35 mm x 72 mm x 17 mm NTN 7207BL1G Single row or matched pairs of angular contact ball bearings	1430 kgf	52 mm	AISI 52100 Steel	Click here
40 mm x 80 mm x 18 mm NTN 7208 Single row or matched pairs of angular contact ball bearings	SPB	40 mm	Plain Sleeve	Lead Free