Tapered roller and friction roller three technological breakthroughs and found that the water spray and dust into the labyrinth seal is a principle of force. This force can be cut off according to the principle design of the labyrinth seal structure, so that the water spray and dust can never enter the outermost side of the first labyrinth seal to ensure that the tapered roller, the friction roller bearing long-term lubrication mode of operation, to reach its normal service life (According to the formula of the bearing life, the normal life of the bearings in the idler should be more than 150,000 hours). Second, breaking the tapered roller, friction roller production and assembly technology. With both ends of the tubular body without machining, welding not to rely on the straightness of the tubular body, the tubular body diameter larger than the surplus production of the press-fit technology basis, bearing directly. The production process in machining is an irrational process, used in the production of roller not only simplify the production process, reduce labor intensity, especially to avoid repeated clamping machining and welding deformation error, effectively ensuring the consistency of the two ends of the roller bearing position misalignment ≤ 0.05 mm, the roller rotation resistance ≤ 1N average, smaller than the international standard more than doubled. Third, tapered roller, friction roller tube body corrosion resistant technology. 1, the scrapped car tires, does not change its physical properties packages to the roller tube, changed the mechanism of friction and wear. Layer thickness 14.5-38 (mm), in the steel roller two months wear off position, you can use more than 60 months, improved wear resistance than steel roller tube several times. Especially with a car tire rubber production buffer roller life increased ten times. Molded ultra-high molecular weight polyethylene roller accuracy, resistance is small, light weight, and high purity. In particular, wear-resistant, corrosion-resistant, flame retardant, anti-static, no spark collision, to avoid the salient features of the gas explosion, called for coal mine roller; sintering, pellets, coke, slag, slag, chemicals, salt other serious environmental wear and corrosion resistance, shaped roller, friction roller always remain flexible rotation, tube life can be up to 50,000 hours, in the cement, mining, power plants, docks up to 100,000 hours or more. Groove roller Note groove roller for conveying bulk materials, groove angle of 30 °; groove roller conveyor Caution: 1, to prevent the conveyor belt load starts. 2, the conveyor belt deviation occurs, should take timely measures to correct. 3 different types, specifications floors conveyor belt should not be together, the joint best glued. 4, the buffer roller type, structure, size, number of layers should be based on the conditions of use reasonable choice. 5, the speed of the conveyor belt generally should not be greater than 2.5 m / s, large blocks, abrasive materials and unloading device fixed pears should be adopted in low speed. 6, the relationship between the roller conveyor drive roller diameter and the conveyor belt fabric layer, the drive roller, enhance the matching of machine to bend pulley the roller groove angle requirements should be based on the design requirements of the transport aircraft, reasonable selection. Should shun the running direction of the conveyor belt feeding direction, should be adopted to reduce the impact of the whereabouts of the material conveyor chute, reducing the material gap distance; conveyor belt by feeding section, shorten the distance between rollers and buffer roller for the drain material conveyor belt to conform to moderately soft blocking plate, so as not to the backgauge board excellent, scratch conveyor belt surface. 8, the friction roller when in use, if any roller missing, should be added and repaired; roller covered by material, resulting in rotation problems, to prevent leakage of material stuck between the tapered roller tape, pay attention to the conveyor belt activities lubrication of the part, but not the oil belt. 9, to avoid the conveyor belt suffered the rack pillars or bulk materials block, to prevent the misfortune to scratch the tear, bucket elevator conveyor local damage, rayon timely repair, so as not to expand. Nylon rollers features a nylon rollers with high wear resistance, low coefficient of friction, easy to wear the belt; 2, with excellent self-lubricating nylon rollers, without oiling, easy to get stuck in harsh conditions ; 3, nylon rollers with anti-static, anti-smoldering, anti-aging, anti-corrosion chemical (acids, alkalis and organic solvents); 4, can withstand repeated impact, vibration; nylon rollers use of ambient temperature range of : -40 ° C to 80 ° C; excellent mechanical properties, light weight, easy installation, no maintenance; 7, nylon rollers (3-7DB) low noise smooth operation, long life (metal roller life 3-5 X)