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
90 mm x 190 mm x 43 mm SNR 7318.BG.M Single row or matched pairs of angular contact ball bearings	0.8750 in	Nylon	3800 RPM	1.5000 in
90 mm x 190 mm x 43 mm NTN 7318B Single row or matched pairs of angular contact ball bearings	In Stock	1040	Open Type	Brass
90 mm x 190 mm x 43 mm NTN 7318 Single row or matched pairs of angular contact ball bearings	Cadmium Plated	6.35 mm	637400552688	C0
85 mm x 100 mm x 41 mm NTN 7317BL1G/GL Single row or matched pairs of angular contact ball bearings	C0	Single Row Non-Fill	24 mm	44000 N
85 mm x 180 mm x 41 mm NTN 7317BL1G Single row or matched pairs of angular contact ball bearings	Uncoated	Chrome Steel	44700 lbf	1.59 in
80 mm x 170 mm x 39 mm NTN 7316BL1 Single row or matched pairs of angular contact ball bearings	124280	Two-Bolt Flange	UL, AFBMA, AGMA, ASM	209
85 mm x 180 mm x 41 mm NTN 7317BGC3 Single row or matched pairs of angular contact ball bearings	1.7500 in	Eccentric Collar	Cast Iron	7316577415639
85,000 mm x 180,000 mm x 41,000 mm NTN 7317BG Single row or matched pairs of angular contact ball bearings	3380 lbf	Four-Bolt Piloted	Contact Seal	Non-Expansion Bearin
85 mm x 180 mm x 41 mm NTN 7317B Single row or matched pairs of angular contact ball bearings	55mm	Open Type	18mm	7600
80 mm x 170 mm x 39 mm NTN 7316BL1G Single row or matched pairs of angular contact ball bearings	67.52 lbs	2.6250 in	Class (3)	Steel
85 mm x 180 mm x 41 mm NTN 7317 Single row or matched pairs of angular contact ball bearings	17000 rpm	Steel	35 mm	120° to 248°
85 mm x 180 mm x 41 mm SNR 7317.BG.M Single row or matched pairs of angular contact ball bearings	2500 RPM	2.0000 in	Lubrication Fitting	Spherical Roller