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
50 mm x 110 mm x 27 mm NTN 7310BGC3 Single row or matched pairs of angular contact ball bearings	UCPPL200MZ2CEW	2090 kgf	106 mm	Set Screw
50 mm x 110 mm x 27 mm NTN 7310BL1 Single row or matched pairs of angular contact ball bearings	Uncoated	NPL	Max 250°	.3750 in
50,000 mm x 110,000 mm x 27,000 mm NTN 7310BG Single row or matched pairs of angular contact ball bearings	Heim®	UNF-3B	Brass	Carbon Steel
50 mm x 110 mm x 27 mm SNR 7310.BA Single row or matched pairs of angular contact ball bearings	Steel	Angular Contact	39.24 mm	Requires Lubrication
50 mm x 110 mm x 27 mm NTN 7310B Single row or matched pairs of angular contact ball bearings	900 mm	135 mm	G 1/8	710 mm
50 mm x 110 mm x 27 mm SNR 7310.BG.M Single row or matched pairs of angular contact ball bearings	Inch CAMROL (CF	Head, Stud Side	Standard	2.7500 in
50 mm x 110 mm x 27 mm NTN 7310 Single row or matched pairs of angular contact ball bearings	8000 RPM	45 mm	6300	1.840 lbs
50 mm x 110 mm x 27 mm SNR 7310.BGA Single row or matched pairs of angular contact ball bearings	0.5940 in	0.3750 in	N-02, BH-02	1.3750 in
45 mm x 100 mm x 25 mm NTN 7309BL1G Single row or matched pairs of angular contact ball bearings	45 mm x 100 mm x 25 mm	-	-	-
45 mm x 100 mm x 25 mm NTN 7309BL1 Single row or matched pairs of angular contact ball bearings	AISI 52100 Steel	190 mm	97 mm	13700 kgf
45,000 mm x 100,000 mm x 25,000 mm NTN 7309BG Single row or matched pairs of angular contact ball bearings	44	In Stock	Open Type	40mm
45,000 mm x 100,000 mm x 25,000 mm SNR 7309BA Single row or matched pairs of angular contact ball bearings	087796177109	360 mm	Not Split	Open