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
25 mm x 62 mm x 17 mm NTN 7305 Single row or matched pairs of angular contact ball bearings	Open Type	7012acd/p4adgb-skf	18mm	60mm
25 mm x 62 mm x 17 mm NTN 7305B Single row or matched pairs of angular contact ball bearings	3/4-14 in	207	1.3750 in	0.63 in
65 mm x 120 mm x 23 mm NTN 7213BGC3 Single row or matched pairs of angular contact ball bearings	Steel	0.975 in	053893114347	1.0000 in
25 mm x 62 mm x 17 mm SNR 7305.BGA Single row or matched pairs of angular contact ball bearings	6.0625 in	3.1250 in	Max 250°	USRB 5000
65,000 mm x 120,000 mm x 23,000 mm NTN 7213BG Single row or matched pairs of angular contact ball bearings	2.2 kN	57 mm	0.3 mm	0.3 mm
65 mm x 120 mm x 23 mm SNR 7213.BA Single row or matched pairs of angular contact ball bearings	280 mm	7316570657661	1:30	HM56T
65 mm x 120 mm x 23 mm NTN 7213B Single row or matched pairs of angular contact ball bearings	38 mm	(2) Outer	290000 N	355000 N
65 mm x 120 mm x 23 mm SNR 7213.BG.M Single row or matched pairs of angular contact ball bearings	0.02 KGS	Open Type	68mm	10700
65 mm x 120 mm x 23 mm NTN 7213 Single row or matched pairs of angular contact ball bearings	Plastic	10.6	7010ce/p4adga-skf	0.45
60 mm x 110 mm x 22 mm NTN 7212BL1G Single row or matched pairs of angular contact ball bearings	2.3125 in	8.7500 in	4.5625 in	3-18T
65 mm x 120 mm x 23 mm SNR 7213.BGA Single row or matched pairs of angular contact ball bearings	500SP1 SL1	RoHS	150 mm	20 mm
60,000 mm x 110,000 mm x 22,000 mm NTN 7212BG Single row or matched pairs of angular contact ball bearings	Open Type	70mm	39.7mm	125mm