Deep Groove Ball Bearings FAG 61948 -M-C3

The FAG 61948 -M-C3 deep-groove ball bearing, with a 240 mm bore, brass cage and C3 clearance, offers a reliable solution for high-heat-load large-scale bearing arrangements.

The 61948 -M-C3 deep groove ball bearing from FAG Rolling Bearings is a single-row radial ball bearing designed for demanding industrial applications. With dimensions of a 240 mm bore, 320 mm outer diameter and 38 mm width, this open roller bearing is characterised by a slim cross-section despite its large shaft diameter. Manufactured from standard roller bearing steel (100Cr6), this ball bearing can withstand high radial loads and moderate axial loads. The open design allows unobstructed access of lubricant into the housing.

What is the 61948 -M-C3 deep groove ball bearing suitable for?

Design engineers primarily use this large bearing in machines that require large shaft diameters despite limited radial installation space. Typical applications can be found in general heavy machinery construction and in industrial gearboxes. Thanks to its wide temperature range of –30 to +200 degrees, the unit is suitable for use under thermal stress. Without sealing washers, the component is designed for integration into housings with centralised lubrication systems that supply lubricant continuously.

What do ‘brass cage’ and ‘C3 bearing clearance’ mean in this design?

The solid brass cage guides the rolling elements with minimal vibration and is suitable for dynamic loads or higher speeds. At the same time, this variant features an increased radial bearing clearance of C3. This additional clearance compensates for operational thermal expansion of the shaft and housing without causing the bearing to become stressed. With tolerance class P0 (ABEC 1), the component meets established industry requirements. External housing seals must be provided in the design, as the bearing is left unsealed at the factory.