Deep groove ball bearings can be used for gearboxes, instruments, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, engineering machinery, roller skates, yo-yo balls, etc

Installation method

Installation method 1 for deep groove ball bearings: press fit: The inner ring of the bearing is tightly matched with the shaft, and when the outer ring is loosely matched with the bearing seat hole, a press can be used to first press the bearing onto the shaft, and then install the shaft and bearing together into the bearing seat hole. During press fit, a soft metal material assembly sleeve (copper or soft steel) is placed on the end face of the bearing inner ring, and the outer ring of the bearing is tightly matched with the bearing seat hole. When the inner ring and shaft are loosely matched, The bearing can be pressed into the bearing seat hole first, and the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the seat hole. If the bearing ring is tightly matched with the shaft and seat hole, the installation of the inner and outer rings should simultaneously press into the shaft and seat hole. The structure of the assembly sleeve should be able to simultaneously press the end faces of the bearing inner and outer rings

Installation method 2 for deep groove ball bearings: Heating fit: By heating the bearing or bearing seat and using thermal expansion to transform a tight fit into a loose fit, it is a commonly used and labor-saving installation method. This method is suitable for the installation of bearings with large interference. Before hot installation, the bearing or separable bearing ring is placed in the oil tank and evenly heated at 80-100 ℃, and then removed from the oil and installed on the shaft as soon as possible, To prevent loose fitting between the inner ring end face and the shaft shoulder after cooling, the bearing can be tightened axially after cooling. When the outer ring of the bearing is tightly fitted with a light metal bearing seat, the hot fitting method of heating the bearing seat can be used to avoid scratches on the mating surface. When heating bearings with oil tanks, there should be a grid at a certain distance from the bottom of the box, or a hook should be used to hang the bearing. The bearing should not be placed on the bottom of the box to prevent impurities from entering the bearing or uneven heating. There must be a thermometer in the oil tank, and the oil temperature must be strictly controlled to not exceed 100 ℃ to prevent tempering effect and reduce the hardness of the ring.

Tolerance

Standard deep groove ball bearings are of ordinary grade and all comply with GB307.1.

Clearance

Standard deep groove ball bearings have internal clearances of C2, standard (CN), C3, C4, and C5 levels, all in compliance with GB4604.

Holder

Deep groove ball bearings generally use steel plate stamped cages or brass solid cages. When the outer diameter is less than 400mm, steel plate stamped cages are used without a post code. When the outer diameter is greater than 400mm, brass solid cages are often used without a post code.

Three processing forms of bearings

The processing form of deep groove ball bearing parts is as follows:

1. Multi process processing: Generally, bearing production requires 20-40 processes, with more than 70 processes.

2. Forming processing: The working surfaces of bearing parts are all rotary forming surfaces, suitable for processing using the forming method.

3. Precision machining: The vast majority of the surfaces of bearing parts need to be ground, and the grinding dimensions and geometric accuracy are based on μ M is the unit.