Henan 134.45.2240.002 Which slewing bearing is the best?

Henan 3...Which slewing bearing is the best? / ' (3,3,3) -, Assembly of belt drive mechanism
/ ' (3,3,3) - Belt drive is a winding The belt is tightly put on the two pulleys, and the friction between the conveyor belt and the pulleys is used to transmit power. There are two commonly used V-belt transmission and flat belt transmission, mainly V-belt transmission.
/ ' (3,3,3) - Technical requirements for V-belt transmission:
/ ' (3,3,3) - The pulley must be installed correctly, and the radial runout is usually required to be (.) mm. The end face runout is (.) mm, which is the diameter of the pulley. For example, the pulley mm diameter: the maximum allowable radial runout is mm, and the maximum end face runout is .mm.
/ ' (3,3,3) - The middle planes of the two pulleys must coincide, and generally the bevel angle must not exceed.
/ ' (3,3,3) - The surface roughness of the pulley should be appropriate, generally ▽3-▽. The smooth surface of the belt is easy to slip, and the rough surface of the pulley is easy to heat, aggravating belt wear.
/ ' (3,3,3) - The belt wrap angle cannot be smaller to ensure sufficient power transmission.
/ ' (3,3,3) - The tension of the belt should be appropriate. If it is too loose, the transmission force is insufficient. If it is too tight, it will easily cause the bearing to heat up and be damaged, and even cause the pulley connecting shaft to bend or break.
/ ' (3,3,3) - Inspection of belt tension
/ ' (3,3,3) - In the belt transmission mechanism, adjust the two The center distance of the shaft can make the belt tension reach the required range. The appropriate tension can be judged based on experience. Use your thumb to press millimeters in the middle of the V-belt. When using multiple belts, keep them even.
/ ' (3,3,3) - Inspection after the pulley is assembled:
/ ' (3,3,3) - After the pulley is assembled, the two wheels must be balanced. The middle planes of the two pulleys should also coincide. Generally, the pulley or ruler method can be used to check. Place a string or ruler against the rosette of one wheel, keep it straight, and see if the other wheel is tilted.