61952-MA-C4

The 61952-MA-C4 is a high-precision deep groove ball bearing belonging to the extremely thin 619 series, designed for applications where space is limited but robust performance is essential. Its core feature is the deep, uninterrupted raceway grooves in both the inner and outer rings, which enable it to handle radial loads as well as moderate axial loads in both directions. The "MA" designation signifies a solid, machined brass cage, centered on the outer ring. This heavy-duty cage construction provides superior strength and stability compared to standard steel or polymer cages, making it suitable for demanding operating conditions.

The primary advantage of the 61952-MA-C4 lies in its suitability for high-speed and high-temperature environments. The "C4" internal clearance is significantly looser than standard clearances, allowing the bearing to accommodate thermal expansion of the shaft and housing without inducing excessive internal stress. This prevents binding and ensures smooth rotation when high temperatures or very high rotational speeds are present. The machined brass cage further enhances its performance by offering low friction and excellent wear resistance, contributing to cooler operation and extended service life. This combination of a thin-section design, a robust cage, and high-speed clearance makes it an ideal solution for compact, critical machinery such as electric motors, pumps, and precision gearboxes.