1.Our roller is a conveyer roller component which will revolutionize the port, coal mine, mining & mine Power industry. 2. Our roller is eco-friendly since it can be recycled and lessens noise pollution. 3. Our roller retails at competitive prices.Product Introduction Tube: Customize Welded Steel Tube Shaft: Bright Drawn Steel to required bearing tolerance Roller End: Both ends of Tube are simultaneously machined and chamfered. Bearing: Single & Double Row Deep Groove Ball Bearing 2RZ&2Z with C3 clearance. Seals: Grease retaining inner seal with Multi-stage Labyrinth Seal and Retention Cap with Outboard Rubbing Flinger Seal. Lubrication: Grease is Lithium Soap type grease with Rust Inhibitors. Welding: Mixed gas shielded arc welding end