R Series ball bearing

The R-Series ball bearings, named for their numerical model numbers, are also known as our Precision Inch Series ball bearings. R series bearings are available in open, sealed and shielded configurations. Sealed and shielded bearings may be slightly wider as shown in the table.

The R-Series bearings are single row, inch series bearings available from 1/8 through 1-1/2 inch bore sizes. The construction of these bearings enables them to accept thrust as well as radial load. Their ball complement and selection of retainers also allows them to work well in high-speed applications.

R Series Specifications

TYPE	d (mm)	D (mm)	B(mm)		Rsmin (mm)	(KN)
			Open	Shielded
	inches	inches	inches	inches		(Cr)	(Cor)
R2	3.175	9.525	3.969	3.969	0.3	0.64	0.22
	0.125	0.375	0.1563	0.1563
R3	4.762	12.7	3.939	4.978	0.3	1.07	0.42
	0.1875	0.5	0.1563	0.196
R4	6.35	15.875	4.978	4.978	0.3	1.47	0.6
	0.25	0.625	0.1960	0.1960
R4A	6.35	19.05	5.556	7.144	0.3	2.8	1.06
	0.25	0.75	0.2187	0.2813
R6	9.525	22.225	5.556	7.938	0.3	3.33	1.41
	0.375	0.875	0.2187	0.2813
R8	12.7	28.575	6.35	7.968	0.4	5.11	2.38
	0.5	1.125	0.25	0.3125
R10	15.875	34.925	7.144	8.731	0.8	6	3.25
	0.625	1.375	0.2813	0.3437
R12	19.05	41.275	7.938	11.112	0.8	9.37	5.02
	0.75	16.427	0.3125	0.4375
R14	22.225	47.625	9.525	12.7	0.8	10.06	5.92
	0.875	1.875	0.375	0.5
R16	25.4	50.8	9.525	12.7	1	14.02	7.93
	1	2	0.375	0.5