　　ZNRH-Z adopts flow monitoring design, effectively avoiding blind spots caused by pressure monitoring, and is suitable for circulating pressure lubrication of reducers such as medium-speed grinding in the power industry.

Model	ZNRH-Z1	ZNRH-Z2	ZNRH-Z3	ZNRH-Z4
Oil viscosity	ISO VG22~320
Oil supply pressure MPa	0.4
Oil supply flow L／min	100~130	150~210	220~300	320~400
Filtration accuracy μm	25
Cooling capacity	The temperature drop is about 10℃ (industrial cooling water, 30℃, 2 times the oil supply flow, 0.2～0.4MPa)
Fuel tank volume m³	0.9	1.2	1.6	2
Heating capacity	About 5℃/h (at rest)
Electric	/

ZNRH-W series new low pressure lubrication station

None

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Thin oil lubrication

　　 When the friction surface of the mechanical motion pair is in relative motion, because the surface directly contacts and generates frictional resistance, a part of the energy transferred by the machine is consumed by the friction and the surface heats up, and the parts are worn at the same time.

　　 Thin oil lubrication is to force the lubricating oil to the friction part of the machine to form a lubricating agent film that can withstand part or all of the load on the friction surface, and separate the friction surfaces of the two moving pairs to make the friction between the metal and the metal. It is converted into internal friction between oil film molecules with lower shear strength.

　　 Thin oil lubrication mainly plays the following important roles in the normal operation and maintenance of mechanical equipment: 1) reduce wear, 2) cool down, 3) wash and clean, 4) prevent corrosion, 5) save energy and reduce consumption.

　　 Thin oil lubrication is mainly used for the lubrication of reducers, dynamic and static pressure or sliding shoe bearings of mechanical equipment such as electric power, metallurgy, petrochemical, cement, etc.