Shanghai QueLong industry CO., LTD., professionally sales 691 bearing, 691 bearing information: model 691 inner diameter: 1.0000 outside diameter: 4.0000 thickness: 1.6000 brands: NSK bearing series: linear motion bearings, want to know more about 691 bearing information, can undertake online consulting or dial the hotline, we will serve for you in detail. 691 bearing using range is very wide, 691 bearing is mainly used in engineering machinery, machine tools, steam car, metallurgy, mining, petroleum, machinery, electric power, railway and other industries, the company sales 691 bearing price reasonable, quality assurance, all aspects of the service, do everything to meet customer demand.