Double-row Deep Groove Ball Bearings

The design of double row deep groove ball bearings is basically the same as that of single row deep groove ball bearings. Double row deep groove ball bearings are suitable for bearing arrangements where the load capacity of a single row deep groove ball bearing is insufficient. For the double row deep groove ball bearing with the same outer diameter and inner diameter as the deep groove ball bearing, its width is larger and the load capacity is much higher than that of the single row deep groove ball bearing of the 62 and 63 series. In addition to having a radial load carrying capacity 1.62 times higher than that of single-row deep groove ball bearings, double row deep groove ball bearings can also bear axial loads. Double row deep groove ball bearings are fitted with two glass fibre reinforced nylon 66 cages. Double row deep groove ball bearings include standard double row deep groove ball bearings and non-standard customized double row deep groove ball bearings.

Deep groove ball bearing installation method 1: pressing fit: Bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, press the bearing to be pressed on the shaft are available, and then put the shaft together with the bearing load bearing hole, when pressed on the bearing inner ring end face, cushion the assembling casing made of a soft metal material (copper or mild steel), bearing outer ring and bearing hole tight fit, inner ring and the shaft is a loose fit, The bearing can be first pressed into the bearing seat hole, then the outer diameter of the assembly sleeve should be slightly less than the diameter of the seat hole. If the bearing ring is tightly matched with the shaft and seat hole, the inner ring and outer ring should be pressed into the shaft and seat hole at the same time. The structure of the assembly sleeve should be able to tighten the end face of the inner ring and outer ring of the bearing at the same time.

Deep groove ball bearing installation method two: heating fit: by heating the bearing or bearing seat, the use of thermal expansion to change the tight fit into a loose fit installation method. Is a common and labor-saving installation method. This method is suitable for the installation of bearings with large interference. Before hot installation, the ring of bearings or separable bearings is put into the oil tank to heat 80-100℃ evenly, and then it is removed from the oil and installed on the shaft as soon as possible. In order to prevent the end face of the inner ring and the shaft shoulder from fitting tightly after cooling, the bearing can be fastened axially after cooling. When the bearing outer ring is closely matched with the light metal bearing seat, the hot charging method of heating the bearing seat can avoid abrasion on the mating surface.