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Bearing showed late failure characteristics to a serious failure (generally bearing damage, such as axle, burns, sand frame Spallation raceway the beads wear, etc.) time it tends to be more than a week, the greater the capacity of equipment, the faster the speed, the The shorter the interval. Actual INA Bearing Fault Diagnosis Once late failure characteristics should be decisive judge faulty oil-free bearings, arranged as soon as possible overhaul.
Bearing manufacture popular through forging, heat renew, turning, grinding and assembly multi-channel processing. Reasonable process, advanced, stability can also affect the life of the bearing. Hot renew, and grinding processes affect the bearing quality, often has a more direct relationship with the failure of the bearing. In recent years, in INA bearings work surface metamorphosis layer with marked the close relationship of the grinding process and the bearing surface quality.
Exercise time, vibration and noise to maintain a certain level, single spectrum appears only one, second harmonic. Very rare triple-frequency spectrum above the oil bearing state is very stable, to enter stable work period. Continue into use late run, bearing vibration and noise begins to increase, sometimes a different tone, but the change of vibration increases more slowly, at this time, bearing kurtosis values start suddenly reaches a certain value. We believe that the INA bearings that showed initial failure.
Bearing the primary obligation of the use of life-parsed, is based on a lot with King, analyze data and failure style pattern to identify the primary elements that constitute a bearing failure, so that targeted improvement measures are proposed to delay the decommissioning of the oil-free bearings to avoid INA Bearing angry burst of early failure.
1, # 2 spindle oil and coarse and fine filter should be replaced after one year of normal use.
2, the normal use of the pump station to add oil, 3-layer silk cloth filter must participate.
Spindle pulley grinding wheel handling must stop the state of the pumping station work. That the spindle is stopped under the state of floating in the static pressure oil. So that does not damage the spindle and hydrodynamic bearings.
4 wheel spindle work back to the pumping station before pressure and whether the grinding head static pressure within the standard range.
5, equipment downtime, we must first stopped grinding motor until the grinding wheel came to a complete stop, and then turn off the pump station, otherwise easy to damage the grinding head.
Change any parts on the pump station must first relieved the high pressure oil inlet hose fittings Change finished parts, oil self-cycle for 15-20 minutes in front of the inlet pipe connected to the grinding head, thus ensuring The grinding head spindle oil is super clean spindle oil through the fine filter. Use to do so to be able to extend the hybrid spindle life
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 4T-25590/25520 NTN | 45.618 | 82.931 | 25.4 |
| 4T-25590/25519 NTN | 45.618 | 82.55 | 25.4 |