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Jiangsu Niupai Group

Address: Binhe Road, Gaoyou High-tech Zone, Gaoyou, Jiangsu Province

Tel:0514-84022599

Mobile: Xia Zhirong13801456657

Email:zgjsnpjj@126.com

Main spindle with dynamic and static pressure

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Commodity name： Main spindle with dynamic and static pressure

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Product Description

Hydrostatic-hydrodynamic spindle

Serial Number	Model	Shaft Diameter	Taper Hole	Sleeve Diameter * Length	Maximum Speed
1	NP-45	Φ45	-	Φ100*430	400-6000
2	NP-70	Φ70	Morse Taper #5	Φ140*265	400-5000
3	NP-80	Φ80	1:20	Φ155*400	400-3500
4	NP-95	Φ95	Morse Taper #6	Φ165*400	400-2500
5	NP-110	Φ110	1:20	Φ180*400	400-2000
6	NP-120	Φ120	1:20	Φ190*400	400-1500

Characteristics of Hydrostatic-Hydrodynamic Spindles:

　　 This series of spindles is mainly used for machining high-precision products. Its rotational accuracy is ≤0.001mm. Machines equipped with this spindle guarantee three years of unchanged spindle accuracy. The roundness of workpieces machined on the lathe is ≤1.5µm, and the surface roughness can reach Ra0.4µm. The internal sliding bearings of this spindle replace the traditional rolling bearing support method, overcoming the shortcomings of general spindles where rotational precision gradually deteriorates.
　　 The hydrostatic-hydrodynamic spindle has several oil grooves and chambers inside. When the hydraulic system is activated, high pressure is generated in the chambers, forming an oil film that supports the spindle. Depending on the design requirements, the spindle will rotate clockwise or counterclockwise. The spindle speed can reach 400-10000 rpm. With proper use as specified by the manufacturer, the spindle life can reach 80,000 hours.
　　 Through ingenious and scientific design, this series of spindles features high speed, high precision, high rigidity, long service life, and low maintenance costs. They are suitable for various grinding machines, lathes, milling machines, boring machines, and other machining equipment.

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