Tapered roller bearing installation considerations

Timken bearing installation is reasonable, will influence the accuracy, bearing life and performance. Therefore, please fully study the installation of the bearings that carried out in accordance with the operating standards including the following items, please bearing installation. A, clean bearings and related parts for grease lubrication of the bearing and oil seal or dust cover on both sides, seal bearing without cleaning before installation. ) Second, check the size and finishing of three related parts, the installation method of bearing installation should be according to the tapered roller bearing structure, size and cooperate with properties of timken bearing parts, pressure should be directly in the tight fit on the ring width, shall not be passed on roller pressure, bearing installation commonly adopt the following methods: ( 1) And keep the bearing and the surrounding clean. Even the eyes can't see the little dust, will also bring bad influence to the bearing. So, keep the surrounding clean, dust from invading bearing. ( 2) , carefully use. In use for bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases, can crack, fracture, so must pay attention to. ( 3) And use the appropriate operating tools. Avoid to existing tools to replace, must use the appropriate tools. ( 4) And to pay attention to the corrosion of the bearing. Operation of the bearing, hand sweat will become rusty. Pay attention to the operation with clean hands, it is better to try to bring gloves. Must be carried out on the bearing inspection and maintenance, inspection and maintenance to prevent failure is very important, in the work to review the rolling noise, vibration, temperature of bearing and lubricant. 1. Bearing the rumbling of timken bearing is a bearing noise itself, namely bearing the inherent noise; The other is a bearing installed before the noise, has nothing to do with the noise of the bearing itself. By listening to sounds can be analyzed out some problems. 一) Inherent noise: roll say all kinds of bearings and rolling friction is rolling bearing inherent noise. Raceway is by the elastic properties of the rolling element and raceway contact, when the taper roller bearing rotating roller rolling on the rolling and send out the voice of a continuous and smooth; B) Tremolo ( All kinds of bearing) C) When the rolling bearing raceway surface or body surface is damaged, pit corrosion, so can produce a certain cycle of noise and vibration. When bearing in operation will produce contamination noise have dust intrusion. This noise is periodically also accompanied by the sound vibration is not fixed, sometimes no. 2. The vibration of the bearing vibration of the bearing of tapered roller bearing failure effect is obvious. Such as peeling, indentation, rust, crack and wear will be reflected in the bearing vibration test so through the use of special bearing vibration measurement device ( Frequency analyzer and vibration meter, etc. ) Can measure the size of the vibrations through the frequency distribution can deduce the specific situation of the abnormal vibration measured values due to the use of the bearing condition or sensor installation position and therefore need different measurements of each machine in advance decision criteria determined after analysis and comparison. 3. The temperature of the bearing temperature usually bearing as operation began to slowly rise to reach steady state after 1 to 2 hours. Normal temperature of the tapered roller bearings for machine and different heat capacity, heat dissipating capacity, rotational speed and load. If the lubrication, installation is not appropriate to the bearing temperature will rise sharply the abnormal high temperature will then have to stop and take the necessary precautions.