TYPE R: RADIAL CONTACT BALL BEARING

Type R Radial Ball Bearings are deep groove, single row bearings suited for radial loads and small thrust loads. The standard bearings are offered with a small amount of radial clearance which allows a contact angle to be established when an axial load is applied. A small amount of inner to outer ring displacement occurs under axial loads and should therefore be considered when making a selection. Type R bearings are assembled with “Conrad” loading, which allows a 50% compliment of balls. Type R bearings can be offered with a full compliment through the use of a loading notch but precautions much be considered when axial loads are present.

Type R bearings are commonly used with two bearings on a single shaft to react off-centered radial loads resulting in a moment load through a radial load reaction or “couple”. The moment load capacity is a function of the distance between the bearing center-lines and the radial capacity of the individual bearings.

Type R bearings are also well suited for “axial float” positions when used in conjunction with a “fixed axial” position on a related axis.

Type R bearings are easily preloaded with oversized balls to reduce or eliminate radial clearance and to provide higher radial stiffness. Reduced clearance is also important for high speed applications to avoid ball skidding.

Type R bearings are offered with a 50% ball compliment and in open, single sealed, double sealed or shielded configurations. Standard bearings are offered with either a nylon or brass snap over separator.