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
40,000 mm x 80,000 mm x 18,000 mm NTN 7208BG Single row or matched pairs of angular contact ball bearings	Eccentric Collar	Uncoated	G1114KRRB	5100 lb
40 mm x 80 mm x 18 mm SNR 7208.BA Single row or matched pairs of angular contact ball bearings	5.4375 in	Class 2	5.438 in	Double Row
40 mm x 80 mm x 18 mm NTN 7208B Single row or matched pairs of angular contact ball bearings	Carbon Steel - corro	1.5000 in	0.6250 in	5/8-18
40 mm x 80 mm x 18 mm SNR 7208.BG.M Single row or matched pairs of angular contact ball bearings	Heavy Duty	Spherical Roller	QMPXT	0.8750 in
40 mm x 80 mm x 18 mm SNR 7208.BGA Single row or matched pairs of angular contact ball bearings	160mm	Open Type	0.02 KGS	Standard
35,000 mm x 72,000 mm x 17,000 mm NTN 7207BG Single row or matched pairs of angular contact ball bearings	250 fp/min	-450 to +1200 &	C954	6000 psi
35 mm x 72 mm x 17 mm NTN 7207B Single row or matched pairs of angular contact ball bearings	717905164668	Click here	225	35000
35 mm x 72 mm x 17 mm NTN 7207 Single row or matched pairs of angular contact ball bearings	5-3/8 in	Spherical Roller	Powder Coated	Non-Expansion Bearin
30 mm x 62 mm x 16 mm NTN 7206BL1G Single row or matched pairs of angular contact ball bearings	8mm	Open Type	0.20 KGS	22mm
35 mm x 72 mm x 17 mm SNR 7207.BGA Single row or matched pairs of angular contact ball bearings	Oil-Impregnated Bron	Click here	225 (sfm)	-15 °F to +
20 mm x 52 mm x 15 mm NTN 7304BL1G Single row or matched pairs of angular contact ball bearings	4.9600 in	Solid Housing	Click here	8.1250 in
30,000 mm x 62,000 mm x 16,000 mm NTN 7206BG Single row or matched pairs of angular contact ball bearings	3.3750 in	1.6875 in	1.5000 in	NP