Rolling bearing types, types and sizes are varied. Expected performance to make mechanical devices grow, choose the most appropriate NSK bearings are essential.
For the selected bearing requires analysis of many, from all angles for related select NSK bearing program of research, evaluation, and no special specification, but generally the order is as follows:
(1) master the use of mechanical devices and bearing condition
(2) specifies the requirements for bearing
(3) selection of bearing type
(4) selection of bearing arrangements
(5) selection of bearing size
(6) the selected bearing specification
(7) of the selected bearing installation methods
NSK bearing′s conditions of use and correctly grasp the bearing mechanism of environmental conditions and conditions of use and the environment on using part of the conditions is a precondition for selecting suitable bearing. Do it, need to obtain data and information in the following areas:
(1) the functions and structure of mechanical equipment
(2) bearing service parts
(3) the bearing load (size, orientation)
(4) the rotational speed
(5) the vibration and shock
(6) the bearing temperature (ambient temperature, temperature rise)
(7) the surrounding atmosphere (corrosive, clean, lubricate)
Selection of bearing configuration
Usually, the axis is based on two bearings in radial and axial support, at this time, NSK bearings are referred to as fixed on the side of the side bearings, which bear both radial and axial loads, fixed relative axial displacements between shaft and housing. Call free on the other side, only take radial loads, axial can be relatively mobile, as a solution to scale axis due to temperature change problems and install error bearing intervals.
For fixed-side bearing, select scroll available in axial movement (such as cylindrical roller bearings) or Assembly move (such as radial ball bearings), NSK bearings. On the short axis, fixed side and free side no other cases, using only unidirectional fixed axial movement of the bearing (such as radial thrust ball bearings).