NSK bearings reduce noise method and preventive maintenance and knowledge - bearing

( 1) Using vibration absorption or isolation devices under high speed is the most simple example instead of NSK bearing thrust and thrust under the centripetal ball NSK bearings, can be in the position to full of antirust oil absorption plastic outer coat, with cover of NSK bearing NSK bearing thrust or average thrust under permission, cylindrical hole in them or set in the same plastic covers, but control with adjacent parts when rotating friction or interference. This method has a certain silencing effect. Use NSK bearing vibration absorption or isolation devices to reduce or NSK bearing noise isolation, noise can get good effect, but this often pay a high price in terms of economy, sometimes make institutional change, cooling condition, or easy to rust, use of comprehensive consideration, only after other steps taken still cannot achieve the indicators of low noise after use of this law. Example is a sound insulation cover using acoustic noise will happen in the NSK bearing system completely closed or closed up as soon as possible. 6 - LMM thickness of steel plate, surface uniform phi 1. 2 - 1. The area of the 5 mm small hole, hole accounted for about 25% ~ 30% of the entire inner surface of outer surface for 2 mm thickness of steel plate. Another example is the NSK bearings with a hole between join among a set of, can decrease the rotation system to NSK bearing vibration on the power, but this requires allocate appropriate, or have the opposite effect may occur. Here the glass fiber or foam plastics are applied to eliminate the high frequency noise, the inner surface of the belt holes used to eliminate the low frequency noise, and outside surface of thick steel plate were used to isolate the noise gaiden. ( 2) Change host corresponding methods to reduce the noise of the pump system, the rotational speed of the original used in motor speed to 1430 r/min flow to 10 l/min pump, to the speed of 710 r/min and match with more specifications of the pump and motor after you get the same flow rate, the oil pump itself NSK bearing NSK bearings, oil pump and oil pump motor noise is significantly reduced, but take up space, a complete set of institutions cost also increased. NSK bearings rolling noise is not very sensitive to load, but the speed is very sensitive, in situations where conditions permit, use the method of reduce speed and increase torque to achieve the same job, but it reduces the noise. ( 3) NSK bearings using the method of chemical additive in lubricant, add some chemical additive, NSK bearings can reduce noise, such as tianjin a factory to produce a low-noise grease containing noise reduction additive, NSK bearing noise can be cut from the original on the basis of the three. 2 db, suitable for used in micro or small NSK bearings. NSK bearings should be how to carry out preventive maintenance and NSK bearings in order to give full play to and keep its long-term performance, must earnestly to do regular maintenance ( Regular inspection) 。 Through proper periodic inspection, do early detection of fault, prevent accident arrangement is very important to increase productivity and efficiency. 1, NSK bearings cleaning will remove the examination, with photography method such as first and then record the appearance. In addition, to confirm the amount of residual lubricant and lubricant sampling, and then wash the NSK bearings. A, NSK bearings cleaning divided into rough washing and fine washing, can be put in use at the bottom of the container and on the metal frame. B, rough washing, oil using a brush to remove grease or adhesive. At this point if NSK bearings in oil rotation, pay attention to the rolling surface due to foreign bodies such as damage. C, fine cleaning, slowly turn the NSK bearings in the oil, must be carefully. Commonly used cleaning agent for neutral aqueous diesel or kerosene, according to the need to sometimes use warm lye, etc. No matter use which kinds of detergent, often should filter clean. After cleaning, immediately on the NSK bearings coated rust-proof oil or antirust grease. 2, examination and judgment to judge removed NSK bearings can be reused, to inspect the dimension precision, rotating accuracy, internal clearance and mating surface, raceway surface, cage and seal rings etc. NSK bearings on results that can be used by the judgement or master of NSK bearings. Judgment standard according to the mechanical properties and important degree and inspection cycle. If you have the following injury, NSK bearings shall not be used again, must be replaced. 1) NSK bearings to fracture and defect of the parts. 2) The raceway surface material on the surface of the rolling strip.