Is there a bearing in the auxiliary oil pump inside the Gao Su pump?
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We’re not sure either whether there are bearings inside the auxiliary oil pump of the high-speed pump. Is there anyone who knows about this?
Upright type, one on the outside and one on the inside, two in total
The one built in is called the main oil pump; it has no bearings and is a type of mechanical pump that operates in a linked manner. That external one is called the auxiliary oil pump; it’s actually an independent pump that comes with bearings!
The built-in type has no bearings; it is a gear pump located inside the pump body, driven by the input shaft. The type outside the pump body is a screw pump that has bearings.
Inside is a rotor pump; in other words, it’s a gear pump