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Check first before cleaning the machine surface, and then remove the perimeter of the bearing parts. Oil seals are very fragile parts, need to be carefully disassemble and not excessive force, and then check the oil seal and neighbouring parts carefully, if it is showing a bad symptom, be sure to replace out, bad oil seals will cause damage to the bearings and equipment downtime.
Check the lubricant, dip dots lubricant on friction between the two, if the presence of pollutants, can feel out, or apply a layer of lubricant on your hand, and then Ray.
Protective effect of grease on bearing has a very important, in order to better play the grease on bearing lubrication, we need to draw the six standards:
Classification and selection of oils and fats; distinction based primarily on the temperature and conditions: fats and oils can be classified according to their allowed operating temperature, solidity and lubrication oil capacity was under the influence of operating temperature, at an operating temperature of the bearing must be under the same temperature you want to select the correct consistency and good lubrication grease.
Rust resistance; use the grease in the bearing must have rust, rust preferably insoluble in water. Fats and oils should have good adhesion, and steel surfaces to form an oil film.
The viscosity of oils and fats; if errors select grease all bearings of the prevention measures is also futile, select a grease, its base oil viscosity at the operating temperature is to provide sufficient lubrication is very important, viscosity, mainly under the influence of temperature, as temperatures rise and fall, when temperatures decrease is increased.
Mechanical stability: grease machine will become soft, resulting in leaks. During normal operation, dumped into bearings, grease from the bearing block. If the mechanical stability of oils and fats is not enough, during the working, cause the oil SOAP structure mechanical disintegration, resulting in oil being damaged, and thus lose lubrication.
You cannot mix oils; incompatible greases must not be mixed, if two incompatible greases mixture, usually the consistency will become soft, might end up bearing damage due to oil easy to drain.
Oil seals to rigorous; seal is necessary for protection from external bearings and lubricant contamination barrier, bearing in operation, whether debris or moisture cannot penetrate the bearing case result in a broken
Replacement of lubricants, oil lubricated bearings after purging old oil, then pour fresh oil and let the machine at low speed of rotation for a few minutes. Oil pollutants collect residue as possible, and then purging these oils, oil is best to filter before use.
Grease lubricated bearings replaced Joe used to grease in addition should avoid contact with cotton to any parts of the bearing, fiber because these residues may wedge between rolling and cause damage, especially small bearing application should pay attention to.
Cover exposed bearings, check the bearings, do not let the bearings are exposed to contaminants or moisture environment. If the work is broken, had his paper should be plastic or similar material machines. If checks are performed without removal may case cleaning exposed bearings, to coating with a brush dipped in oil solvent, and then dry with a lint free cloth or compressed air dryer (be careful not to allow the bearing components starting rotation).
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7934A5TYNSULP4 NSK | 170 | 230 | 28 |
| 7934CTYNSULP4 NSK | 170 | 230 | 28 |