628/7

The 628/7 series (taking the common 628/7 - 2Z as an example) as a small single-row double-sided dust-proof deep groove ball bearing, its core function is to provide low-cost, low-friction and dust-proof durable general rotating support for the rotating parts of small compact equipment in various industries, suitable for basic rotating needs in both civilian and industrial scenarios with no extremely high requirements for load and speed. This bearing features a small size of 7mm inner diameter, 14mm outer diameter and 5mm width, which can easily be embedded in household appliance motors, small transmission mechanisms and other narrow installation spaces. The rings and rollers are mostly made of wear-resistant steel materials, combined with thin sheet steel cages, with a low friction coefficient, capable of bearing both radial loads and certain combined radial and axial loads, suitable for the force conditions during the normal operation of equipment; the double-sided metal dust-proof cover design can effectively prevent dust, debris and other impurities from entering the interior, firmly locking the pre-filled lubricating grease, achieving long-term maintenance-free operation and reducing the frequency of equipment maintenance; its reference rotational speed can reach 100,000 r/min, and the maximum rotational speed is 50,000 r/min. Combined with a basic rated dynamic load of 0.956 kN and a basic rated static load of 0.4 kN, it can meet the routine operation requirements of various small-sized equipment such as high-speed motors, toy accessories, printing machinery and small conveying equipment. With its simple structure, strong adaptability and high cost-effectiveness, it becomes a highly adaptable supporting choice for small rotating components in the general machinery and civilian equipment fields.