Miniature bearing

In ultra small aperture in the miniature bearing, miniature deep groove ball bearing type has the metric 68 series, 69 series, 60 series, etc., inch on a total of 6 R series, based on this, also can be divided into with ZZ steel dust cover bearing series, rubber sealing ring with RS miniature bearing series, teflon bearings seals series and flanged penal series and so on.

Commonly used models

682 682ZZ MR52 MR52ZZ 692 693ZZ MR83 MR83ZZ 693 693ZZ 623 623ZZ MR74 MR84 MR84ZZ MR104 MR104ZZ 694 694ZZ 604 604ZZ 624 624ZZ MR85 MR95 MR105 MR105ZZ 685 685ZZ MR115ZZ 695ZZ 605ZZ 625ZZ MR106 MR126 MR126ZZ 696ZZ 606ZZ 626ZZ MR117 MR117ZZ MR137 687ZZ 607ZZ 627ZZ MR128 MR128ZZ MR148 MR148ZZ 68zz 698ZZ 608ZZ MR149 MR149ZZ 689 689ZZ 609ZZ 629ZZ 639ZZ

The main purpose

Miniature bearing is suitable for various industrial equipment, small rotary motor and other fields with high speed and low noise, such as:

Office equipment, micro motor, instrument, laser engraving, small clock, soft drive, pressure rotor, dental dental drill, hard disk motor, stepper motor, video recorder magnetic drum, toy model, computer cooling fan, money counting machine, fax machine and other related fields.

Matters needing attention

1. Place the yoke iron on the end face of the main engine.

2. Insert the plug into the power socket with the control switch.

3. Check whether the grounding wire is in good condition, and test with the measuring pen after the power is switched on.

4. Press the start button and the host is powered on.

5. Check that the yoke iron has no voltage to the ground.

6. Press the stop button to stop heating when the host machine power off.

7, according to the different specifications of the miniature bearing or other workpiece, choose different yoke iron cover, put the yoke iron on the top of the main machine, should be consistent with the smooth.

8. When heating the miniature bearing, the sensor shall be inserted into the "sensor socket" and the sensor shall be attached to the heated workpiece.

The failure reason

About 40% of the failure of ball bearings is caused by dust, dirt, debris pollution and corrosion. Pollution is usually caused by incorrect use and poor use environment. It also causes torque and noise problems. Microbearing failures caused by environment and pollution can be prevented and the causes of such failures can be determined by simple visual observation. As long as the use and installation of reasonable, micro-bearing erosion can be easily avoided. Denudation is characterized by indentation in the raceway of miniature bearing rings caused by impact load or incorrect installation. Denudation usually occurs when the load exceeds the yield limit of the material. Erosion can also occur if a load is improperly mounted across the miniature bearing ring. The pits on the miniature bearing rings also produce noise, vibration and additional torque. [2]

The solution

Because of the different causes of heating of the micro bearing, the solutions are also different. The following is the solution when the temperature of the micro bearing is overheated:

1, the fat filling method, the so-called fat filling method is regularly to the bearing working surface to fill the appropriate amount of grease, is one of the most commonly used grease lubrication.

2. Oil cup method: The oil cup method is to set a cap-type oil cup or pressure oil cup on the bearing seat, and regularly rotate the cap or oil gun to inject grease. This is a common way of grease lubrication.

3, pressure grease method, pressure grease method is dependent on grease pump grease. At this time should be chosen liquid grease.

4, centralized grease supply method, centralized grease through the grease pump, at the same time to each deep groove ball bearing and other parts of the grease. Similarly, the grease should be of good flow resistance, oxidation resistance and corrosion resistance, which is also a pressure grease.