Pump temperature
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Are there any standards or specifications regarding the temperature limits for operating pumps, including the temperatures of the bearings and the pump body?
I don’t think there’s such a standard; I’ve never heard of it.
Since different devices are affected by the medium temperature, the temperature standards should also vary； Different types of bearings, such as rolling and sliding types, have different suitable temperature ranges. Generally, we carry out inspections based on experience; when the temperature of the medium is close to room temperature, the temperature of rolling bearings is usually between 40-60 degrees. If it suddenly exceeds 70 degrees, there is almost certainly a problem.
Newly installed pumps generally go through a running-in period, just like tractors used at home which also require a certain amount of time to adjust to operation. During this period, the temperature should not exceed 90 degrees. Our installation is equipped with a lubrication pump; the manufacturer suggested that this is necessary due to heat generation at the bearing ends. In fact, if the pump can be rotated smoothly before it starts operating, then the motor of the unit usually won’t overheat. During normal operation, it should not exceed 65 degrees; the normal temperature of pump bearings is generally between 30 and 50 degrees, based on my experience
This is related to the medium inside the pump; if the operating temperature of the pump itself is 150 or 200 degrees, then the temperature of the bearings will naturally not be low. These pumps belong to the category of high-temperature pumps； Of course, for ordinary pumps at normal temperatures, the flow of fluid helps to carry away the heat generated by the pump itself, so the temperature does not usually rise too much during continuous operation. Generally, we rely on experience to determine this: when the temperature of the medium is close to normal, the temperature of the rolling bearings is usually around 40 degrees. If it suddenly exceeds 60 degrees, there is almost certainly a problem. In such cases, pumps equipped with piping systems usually have alarms or interlock mechanisms.
What I heard is that the shaft temperature rise should not exceed 40 degrees; I’m not very familiar with this either
Under normal circumstances, the bearing temperature should be kept below 65 degrees. If the temperature rises suddenly or shows a tendency to increase continuously, the operation must be stopped immediately to investigate the cause.
API610 specifies clear numerical requirements, and it is also highly authoritative!
I don’t think so. All I know is that the bearing temperature seems not to exceed around 75 degrees
Are there any standards or specifications regarding the temperature limits for operating pumps, including the temperatures of bearings and the pump body? 1. Regarding bearing temperature, both national standards and API 610 provide clear guidelines; it is recommended that you consult these documents. 2. As for the pump body temperature, the material to be used depends on that temperature – it’s not possible to specify a fixed temperature value; API 610 offers guidance on the appropriate materials to use