Shanghai QueLong industry CO., LTD., professionally sales 684 bearing, 684 bearing information: model 684 inner diameter: 4.0000 outside diameter: 9.0000 thickness: 2.5000 brands: NACHI bearing series: linear motion bearings, want to know more about 684 bearing information, can undertake online consulting or dial the hotline, we will serve for you in detail. 684 bearing using range is very wide, 684 bearing is mainly used in engineering machinery, machine tools, steam car, metallurgy, mining, petroleum, machinery, electric power, railway and other industries, the company sales 684 bearing price reasonable, quality assurance, all aspects of the service, do everything to meet customer demand.