61820M

The core positioning of 61820M is a deep groove ball bearing that offers both high rigidity and high-speed stability in medium-heavy load scenarios. It is specifically designed for medium-high-speed operations where high precision, structural strength, and operational reliability are required. The bearing is made of GCr15 high-carbon chromium steel with a brass cage (M represents the brass cage identifier), featuring a compact size of 100mm inner diameter, 125mm outer diameter, and 13mm width. This compact design not only simplifies the installation space but also enhances the medium-heavy load bearing capacity. The brass cage has superior rigidity, thermal conductivity, and wear resistance, making it suitable for higher rotational speeds and harsh conditions. It can stably withstand radial loads and bidirectional axial loads. Its low friction characteristics ensure high-speed operation efficiency. It offers both open and sealed design options to accommodate different usage scenarios. The open version is convenient for lubrication replenishment, while the sealed version prevents contamination and leakage, reducing maintenance costs. It is widely used in large motor shaft systems, industrial gearboxes, heavy machinery transmission, precision equipment shaft systems, construction machinery配套， and automated production lines， providing precise， stable， and long-lasting rotational support for high-load and medium-high-speed operating equipment.