Date: 2013-08-20

TIMKEN bearing selected skill points and role

　　On shafts and in housings, TIMKEN bearings require radial, axial and tangential direction three fixed its position. Radial and tangential orientation achieved through the tight fit of the TIMKEN bearing mining, axial position only in a few cases the use of tight fit; General axial limited parts, such as the end cap and retaining ring to limit the axial position in the context of clearance.
　　Select the cooperation should focus on the following four points:
　　(1) TIMKEN bearing force uniform circumferential surface should have good support and, in order to reduce the distortion, and can take advantage of TIMKEN bearing load capacity.
　　(2) the rings in its mating surfaces cannot slide along tangential direction, otherwise it will damage the mating surfaces.
　　(3) TIMKEN bearings must be with its free end shaft and TIMKEN bearing hole that fits the length changes, namely the need to adapt the axial location ability to walk within a certain range.
　　(4) care must be taken to enable the TIMKEN bearing installation and removal easy, expenditure when you cut corners.
　　Allowed speed according to the TIMKEN bearing type, size, precision, cage type, load, lubrication, and cooling factors to determine. TIMKEN bearing table lists the standard precision of TIMKEN bearing under oil lubrication and grease lubrication allows speeds. Typically, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are suitable for high speed operation of the occasion.
　　TIMKEN bearing size and rotation precision is according to ISO and JIS Standards. That require high-precision and high-speed operation of the machine, TIMKEN bearings precision level 5 or above is recommended, deep groove ball or cylindrical roller bearings, radial-axial ball bearings TIMKEN bearings are suitable for high precision mechanical operation. Rigid, when a TIMKEN bearing rolling elements and raceways-contact surface pressure will generate elastic deformation. Some machines need to keep to a minimum the elastic deformation. Roller bearings are smaller than the elastic deformation of ball bearings.
　　In addition, the TIMKEN bearing to be applied in certain circumstances preload in order to increase rigidity. This procedure is typically used for deep groove ball bearings, radial ball bearings and tapered roller thrust bearings inner and outer rings bias, the shaft bent, shaft or housing tolerances change, with the error will cause the eccentricity of the inner and outer rings. To prevent excessive eccentric angle, self-aligning ball bearings, self-aligning roller bearings or spherical bearing is a better choice. Voice frequency and torque, rolling bearings are manufactured at production of high precision standard, so noise and small torque. Deep groove ball bearings and cylindrical roller bearings applicable for low voice, low torque situations where there are special requirements.

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