The installation of various TIMKEN bearing import method

TIMKEN bearing import installation is correct, directly affecting the precision of the TIMKEN bearing import when using, the life and performance. Therefore, design and assembly department for the installation of the bearing be fully research, carried out in accordance with the operation standard. Operation standard project usually is as follows: cleaning TIMKEN import bearings and related parts to check the size of the related parts and precision inspection fill lubricant TIMKEN bearing import after installing hope during installation, then open the TIMKEN bearing import packaging. Grease lubrication, generally not TIMKEN bearing import cleaning, filling grease directly. Oil lubrication, generally don't have to clean, however, instrument or high-speed import with TIMKEN bearing etc, to clean with clean oil, remove rust inhibitor) on the bearing. Remove the rust inhibitor TIMKEN bearing import, easy to rust, so can't put randomly. Moreover, have been the TIMKEN bearing import grease sealed, not directly use cleaning. Measures for the installation of TIMKEN bearing import because of the bearing structure, cooperate, conditions vary, due to the more commonly as the axis of rotation, so the inner circle need interference fit. Cylindrical hole bearing, multi-purpose press pressure into, or hot charging method. Taper hole, fixed on the cone shaft directly, or use the set set of installation. Installed to the TIMKEN bearing import, use the clearance fit, the outer ring have surplus quantity, usually with the press into, or use after cooling installation method of the cold. Use dry ice as coolant, the cold installation, the moisture in the air condenses on the surface of TIMKEN bearing import. So you need to take rust prevention measures. Cylindrical hole bearing mounting press press it into a small TIMKEN bearing import widely used press press it into. Block to inner ring, press gently pressure to the inner ring end face close to shoulder. Install inner ring, outer ring to resist pad will cause the roll channel of indentation or crushed, so absolutely forbidden. Furthermore, operation, should be greased the mating surfaces in advance. Installed with a hammer knock occasions, as a last resort to mat mat, circle piece of work. This practice is often import TIMKEN bearing damage, so, only small amount of interference, the interference cannot be used for the large or medium and large amount of TIMKEN bearing import. Non separation TIMKEN import bearings such as deep groove ball bearings, inner and outer ring needs to be interference installation, as shown in figure 2, with a screw or hydraulic, using block will pressure into the inner and outer ring simultaneously. Self-aligning ball bearing outer ring is easy to lean, if not interference fit, also the best mat block installation. Separation type TIMKEN bearing import such as cylindrical roller bearings, tapered roller bearings, inner and outer ring can be installed to the shaft and bearing seat. Will be installed inner ring and outer ring, the key is firmly closed, to prevent the center deviation, barely membership roll to surface abrasion. Hot charging method of large TIMKEN bearing import and trendy takes a lot of power, so it is difficult to work. Therefore, widely used in hot pack: in oil heating TIMKEN bearing imports, inflation, and then loaded on the shaft. Using this method, the force of improper installation will not happen, can shorten the operation time. TIMKEN bearing import heating temperature to bearing size, the required amount of interference, refer to figure 3. Hot charging work related matters needing attention, as follows. ( a) TIMKEN bearing import shall not exceed 120 heating? C。 ( b) To make the TIMKEN bearing import don't touch the bottom of the tank, should put the bearing on the metal frame, or lift. ( c) In order to prevent operation, because of the inner ring temperature drop and difficult to install, heating TIMKEN bearing import should be higher than the temperature required 20 ° C - 30°C。 ( d) After installation, bearing cooling, the width direction also will shrink, so want to use the method of shaft nut or other appropriate, lock it, in case of clearance between inner ring and bearing retaining shoulder. Induction heating device in addition to the oil hot charging, using the electromagnetic induction principle of induction heating device is also widely used. Induction heating devices, built-in excitation coil, due to the electromagnetic induction effect, after the power supply current to the heating body ( TIMKEN bearing import) , the heat produced by the impedance of the bearing itself. So you can in a short period of time, without fire, oil evenly heating. TIMKEN bearing import of hot charging high work efficiency, clean. Packing and unpacking the frequent occasions, such as roll bearing, railway vehicle axle box with cylindrical roller bearing, the special induction heating device can be used for installation, remove the inner ring. Tapered bearing tapered bore hole bearing installed directly to the inner ring fixed in the cone shaft or sleeve, remove the set of installed onto the cylinder axis. Multi-purpose hydraulic installation of large spherical roller bearing, self-aligning bearing pressure reduction of intake to check the radial clearance, for installation. Using feeler clearance, measuring two columns of the clearance at the same time, to the basic equal value. Increases as the size of the TIMKEN bearing import, install onto the shaft, because the weight of outer elliptical deformation, deformation if the TIMKEN bearing import clearance, lower part of the measurement of Numbers will be greater than the actual clearance, with the error of radial clearance, according to table 1 is roughly a standard installation, will cause the interference amount is too large, or the actual installation clearance is too small. With horizontal lateral clearance in two places a, b, and half of the sum of the lower clearance c as clearance. Self-aligning ball bearing with tight sleeves installed onto the shaft, to ensure that the outer ring flexibility to the heart, after installation clearance cannot be too small.