Inch dimension shaft sizes are extremely common in the North American market. KML Bearing USA meets this demand with its R Series Inch Size Single Row Deep Groove Radial Ball Bearings. Featuring the same high-quality construction as our other Single Row Deep Groove (SRDG) ball bearings, they are manufactured to ISO9001 and TS-16949 standards with the inner ring, outer ring and balls processed from vacuum degassed 52100 bearing steel. Before assembly, these components are heat treat hardened to produce a durable wear surface on the balls and ball tracks. The ball retainers and shields are produced from cold rolled steel.
Due to the R Series’ longevity and design, they provide precision performance in power transmission, lawn & garden, landscape and mobile equipment. Because of this wide range of applications, including high RPM small motors, KML Bearing USA’s R Series Inch Size Single Row Deep Groove Radial Ball Bearings are available in Bore Sizes that range from as small as an 1/8 of an inch up to 1-1/2 inches. They are available in a Standard or Industrial Grade design, produced to ABEC 1 classification and feature both dual-lip non-contact double seals (2RS) or metal shields (ZZ) for these and most other industrial applications.
For high precision, electric motor applications, the R Series Inch Size Single Row Deep Groove Radial Ball Bearings are sometimes available in a Premium Grade design, produced to ABEC 3 classification and feature triple-lip light contact seals (2RD). Call and inquire about availability.
As with our other premium grade Single Row Deep Groove (SRDG) ball bearings, the R Series come lubricated with Chevron SRI#2 grease and are considered Lubed-for-Life. Of note, Chevron SRI#2 grease is a high temperature ball and roller bearing grease, recommended in bearings operating at high RPMs. Click Design to read more information about Ball bearings and their Technical Specifications.