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1, under the rolling bearings should not be removed from the parts, such as when you must remove, should use the right tools and methods.
2, in front of the assembled bearing, according to bearing corrosion, clean and use the appropriate cleaning agent.
3 inside and outside micrometers, in front of the assembled application check the inner diameter of the bearing and the shaft diameter, fit tolerance must conform to the drawings.
Outside 4, mounted on rolling bearing housings, bearing cap should be no gap between the joints and bearing housings, but the bearing outer ring and housing on each side of the tile should set aside a certain amount of clearance. W backlash used feeler gauge survey, if the gap is too small or there "clip" phenomenon, you can scraper scrape, increasing the gap, and in accordance with the table of the opposite to the bearing and bearing housing clearances.
5, rolling bearing Assembly, into the law, pressure and heat Act into law. When you THUMP into the law, copper rod or casing should be used as a tool to pass, so the forces acting on the bearing symmetrical. Presses, indentation is used instead of a hammer, still with cannula transfer power. No direct flame heating with heat load, 80~90℃ thermal oil heating, oil temperature should not be more than 100 ° c. Bearing heating not heating tanks contact bearings should be hanging in the Central reservoir, so as to avoid local overheating caused by annealing.
Heating time should not be less than 15min, expanded to the requested values, and then assembled. Hot charging process must not stop, quickly mount the bearing to the right location. Steel ball bearing cage is not oil resistant plastic, then book your water heating, but after assembling timely to dry water.
6, when rolling bearing Assembly, shall meet the following requirements:
⑴ the cleaned bearings should be checked, bearing damage, rust-free, rotational flexibility is, check the bearing with shaft and housing combined with category and size, compliance with requirements before they can be assembled;
⑵ When assembled on bearing the pressure evenly, and perpendicular to the face, ban preventing unilateral force. Select subject based on Assembly relation, such as journal bearings assembled on the pressure should be on the bearing inner ring;
⑶ When assembled, should enable the bearing and the shaft tight, tapered roller bearings and radial-axial clearance of the bearing and the shaft must not be greater than 0.05mm, the other bearing cannot be greater than 0.1mm. Bearing cap and retaining ring must be formed and cling evenly on the bearing surface, stipulated in the technical file and adjust the clearance;
⑷ When assembled, should note specifications on the bearing side outward, ease of check replacement. After Assembly turn by hand to check for any jam, then raise amount of grease. Sealing device must be provided for Assembly, no oil leakage of sealed;
V one-column, two-column and four-row tapered roller bearings, radial-axial bearings, Assembly axial clearance should be checked and adjusted as bearing standard or technical document;
⑹ radial bearings, needle roller bearings, the spiral roller bearing after Assembly, must be rotational flexibility. Grease bearing Assembly bearing cavity after injection of 65%~80% cavity volume of cleaning the grease for bearings with oil, are not allowed to inject grease.
⑺ When assembling bearings, adjust the degree of axial internal clearance and axial preload (axial interference), standard technical documentation requirements or equipment should conform to bearing.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7005ADB NSK | 25 | 47 | 12 |
| 7905CDB NSK | 25 | 42 | 9 |