Hollow shaft and bearing assembly

timer Asked: Dec 19th, 2013

Question description

  FANADE Industry(HongKong) Ltd,with annual output capacity of a large quantity of all kind of parameter of Fag 6010 bearing as well as 80 million sets of needle roller bearings and 2 billion of needle rollers,covers an area of 6200 square meters and construction area of 3500 square meters Its main product series include drawn cup needle roller bearings,drawn cup needle roller clutches,roller bearings,cylindrical roller clutches and ball bearing components,thrust bearings,roller bearings,linear motion guide roller bearing and rolling bodies etc with imported and domestic famous brands including Swedish SKF bearings,German FAG,INA bearings,Japanese NSK bearings,Japanese NTN bearings,Japanese KOYO,FYH bearings,Japanese IKO bearings,American TIMKEN bearings,Britain RHP and other famous imported bearings.Here we'd like to talk about Hollow shaft and bearing assembly.

  Industrial powder grinding with grinding machine adopts rolling bearing, has been widely promoted in our country, the save power consumption, increase production, save oil, decrease maintenance, less pollution, and many other aspects, has received the good effect. At present, some manufacturers follow the example of grinding machine adopt the method of rolling bearing, in the hollow shaft and the installation of the rolling bearing form more unreasonable place, to the mill to use in the operation of the factory in the future work has brought some disadvantages.Hollow shaft and bearing assembly? In order to solve this problem, we put forward the mill hollow shaft installation best assembly method of rolling bearing.

  Mill hollow shaft installed the old-fashioned method of rolling bearing is the inner diameter of the hollow shaft processing into suitable for bearing, bearing thermal device, bearing parts, bearing outer ring of top cover, top cover by front-rear spiral tube (or front-rear bushing) bolted on the hollow shaft, with pressure. In the process of grinding operation, front-rear screw barrel, fixed bolt looseness, often caused the roof and the hollow shaft of the displacement, the dust will be empty axis and the gaps between the top cover into the bearing box, make dirty grease, Hollow shaft and bearing assembly,lead to bad lubrication, bearing damage is often happened.

  In order to overcome the above several shortcomings, after several years of practice and exploration, we designed a new kind of installation method, and got good application in some factories.

  The method is: in the mill hollow shaft will install the part of the rolling bearing diameter bold, hollow shaft is the cooling of the thin oil and conduct hollow shaft to the bearing temperature drop to 60 degrees below the normal range.

  The advantages of this kind of bearing has the following several aspects:

  1. The thin oil lubricating grease lubrication is superior to that of bearing friction coefficient to a minimum, Hollow shaft and bearing assembly,power saving effect is better.

  2. The normal operation of the bearing temperature, dry oil lubrication bearing temperature than is much lower, prolong the service life of bearing.

  3. Under the bearing seat is equipped with the oil standard oil level observation, operators can see the oil level height, can timely supply of oil, prevent lack of oil lubrication of the poor, to avoid the bearing damage accidents.

  4. And the oil chamber of the bearing oil content, Hollow shaft and bearing assembly,can install rolling bearing outside diameter narrow (installed in the front-rear device has enough strength and torque force under the premise of), hollow shaft and front-rear spiral drum set a flange connecting end face, and front-rear spiral tube flange connection. From coarse to fine in the hollow shaft, on the face of set a pressure bearing inner ring flange, prevent bearing axial channeling out.

  The second advantage is to remove the bearing outer roof, Hollow shaft and bearing assembly,prevent dust from entering the bearing box, kept good oil, ensures the service life of bearing, safe and reliable operation.

  A third advantage is due to the diameter of the rolling bearing increased, and the average diameter hollow shaft diameter is poor, to use thin oil lubrication chamber, improve the thin oil oil level, reduce the thin oil spill has received the certain effect.

  The fourth advantage is due to the installation of the rolling bearing parts of the hollow shaft diameter of bold, Hollow shaft and bearing assembly,rolling bearing and front-rear radial distance between screw barrel, has played a certain insulation and cooling effect. In cooling, prolong service life, the bearing must be used.

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