Does turning the shaft require going to an oil station for lubrication?
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May I ask everyone, for large centrifugal pumps with forced lubrication via an oil supply system, is it necessary to start the oil supply system to provide lubrication when the pump is stopped and rotated manually?
It’s not necessary. When turning the rotor manually, the speed is too low; even with hydraulic pressure, there is little lubrication effect. Manual rotation is mainly used to determine whether there is any grinding between the rotor and the casing
If the stop is short, it’s not necessary. But if long-time cranking is required (such as alignment), we have to start the oil pump.
Basically, there is no need to open gas stations.
Personally, I think that if the machine is shut down for a long time, it’s best to start the oil pump before turning the shaft, so that there is some oil on the surface of the bearing shells. It’s okay if it can’t be turned on due to short downtime
Judging from the responses from those upstairs, most people believe that manual cranking does not require a fuel station. I have a question: does an electric turntable require an oil station?
It has been parked for a long time; there’s definitely no oil left in the bearings. Will turning the manual knob 1–2 turns cause wear to the bearings?
When the rotor has been parked for an extended period of time, there is no more lubricating oil inside the bearings; before starting the rotor rotation, it is necessary to turn on the oil pump and the oil tank heater. The oil temperature must reach the minimum level allowed for operation before automatic or manual rotor rotation can be initiated.
Our turning gear is driven by lubricating oil; generally, the lubricating oil pump is turned off after the turning gear is stopped
Our turning gear is driven by lubricating oil; generally, the lubricating oil pump is turned off after the turning gear is stopped
It’s not necessary for short-term parking. If the vehicle is parked for an extended period of time, a gas station should be visited.
I need to start the oil pump for lubrication before turning the shaft. As for whether the oil pump should run simultaneously while turning the shaft, there’s no special requirement, I guess :)
Under normal circumstances, there is no need to start the pump. During long periods of downtime, the electric lubrication system requires the oil pump to be turned on; it can be turned off after the machine has been rotated
When turning a large centrifugal pump, lubricating oil must be supplied; this is especially true for sliding bearings, which require lubrication at all times.
Generally, it’s not necessary manually, but it depends on the specific machine
The electric turntable should start the lubricating oil pump; otherwise, the bearing shells are prone to wear； If turning the shaft manually, it is fine not to start the lubricating oil pump; if the temperature of the bearing shells is high, it is recommended to keep the lubricating oil pump running.
It is required if it is a sliding bearing; it is not necessary if it is a rolling bearing.
I’ve learned about it; our factory happens to have a motor with forced lubrication using sliding bearings.
I think it’s necessary; since he is forcing the fuel supply, it means there must not be a lack of fuel
The turning gear definitely requires the oil system to be in operation, unless during unit maintenance, when alignment is being done, the system can be turned off for a short period of time.