Bearing wear can be caused by both lack of lubrication and unbalanced operation of the rotor and propeller, but most often the problem lies in the poor quality of individual parts. In this case, the "broken" bearing can be restored by eliminating the backlash.
Necessary
- - steel stand or bench vice;
- - steel rod (firing pin);
- - support sleeve;
- - a hammer;
- - steel ball.
Instructions
Step 1
Place the bushing on the steel stand. Its diameter must match the diameter of the bearing sleeve.
Step 2
Place the bearing on the support bush and insert a steel ball into the top bore of the bearing bushing.
Step 3
Press the ball down with the striker. The striker should be made of steel, a hole should be drilled at the end of the steel bar to fix the position of the striker on the ball.
Step 4
Press the resulting structure firmly so that the force vector is directed straight down. Apply a few light, precise blows with the hammer. The impact force will depend on the size of the bearing.
Step 5
Then check how much the backlash has changed. To do this, insert the fan axle into the bearing hole and wiggle it in different directions so that the axle fits snugly into the hole.
Step 6
As soon as the axle is in the bearing to a depth of 2-5 mm (depending on the size of the bearing), start rolling the axle around the hole in a circular motion. Make sure that the axle does not rotate in the bushing, but "rolls" along the inner surface.
Step 7
Repeat the set of the above steps several times in order to achieve the minimum backlash at the moment of free rotation of the bearing.
Step 8
As a result, the inner surface of the bearing bush will be reduced; to ensure smooth rotation of the bearing, it is necessary to apply a high viscosity grease. Its density will allow the bushing to work properly.
