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
12 mm x 37 mm x 12 mm NTN 7301 Single row or matched pairs of angular contact ball bearings	0.3 mm	22 mm	Galvanized Steel	20 mm
12 mm x 37 mm x 12 mm NTN 7301B Single row or matched pairs of angular contact ball bearings	Non-Expansion Bearin	3.38 to 4.19 in	123860	1.2500 in
10,000 mm x 35,000 mm x 11,000 mm NTN 7300BG Single row or matched pairs of angular contact ball bearings	10,000 mm x 35,000 mm x 11,000 mm	-	-	-
15 mm x 42 mm x 13 mm NTN 7302 Single row or matched pairs of angular contact ball bearings	TTSP	1.072 in	0.03 in	5/8 in
10 mm x 35 mm x 11 mm NTN 7300 Single row or matched pairs of angular contact ball bearings	35mm	10mm	11.4	Open Type
10 mm x 35 mm x 11 mm NTN 7300B Single row or matched pairs of angular contact ball bearings	0.6875 in	Round	1.6250 in	0.4375 in
150,000 mm x 270,000 mm x 45,000 mm NTN 7230BG Single row or matched pairs of angular contact ball bearings	1.4375 in	1-7/16 in	Steel	Without Snap Ring
170 mm x 310 mm x 52 mm SNR 7234.BG.M Single row or matched pairs of angular contact ball bearings	62 mm	16 °	PTFE Composite	35 mm
60 mm x 130 mm x 31 mm NTN 7312B Single row or matched pairs of angular contact ball bearings	60 mm x 130 mm x 31 mm	-	-	-
160 mm x 290 mm x 48 mm SNR 7232.BG.M Single row or matched pairs of angular contact ball bearings	11400	In Stock	125mm	24mm
60 mm x 130 mm x 31 mm NTN 7312 Single row or matched pairs of angular contact ball bearings	52 mm	1 mm	1 mm	28 mm
150 mm x 270 mm x 45 mm SNR 7230.BG.M Single row or matched pairs of angular contact ball bearings	Non-Expansion Bearin	46800 lbf	Four-Bolt Square	7-3/4 in