Overhead sectional door most widely used for loading areas on all types of industrial premises and Designed with a curved overhead track, these vertically-opening sectional doors can be installed in areas with reduced head room. They provide heat and sound insulation with its composite panel construction.
The counterbalance and cable system provides quiet and straight forward operation for manual doors. Electric operation is available for larger applications that can incorporate many alternative operator options to suit all client requirements.
The standard outer panels are manufactured from 0.5mm thick, high quality zinc coating to BS EN 10147
For the best weather protection the sectional door panel has an interlocking hinged joint integrating a high quality seal the full length of the panel.
A counterbalance system is incorporated into the sectional overhead door to ensure efficient and effortless operation.
The counterbalance comprises of springs mounted on a steel shaft that are high tensile helical wound steel. It has been heat treated for enhanced performance for around 50,000 cycles.
Reducing shaft friction is achieved with the aid of brackets and guide rollers incorporating highest quality sealed bearings.
Overhead Sectional Door,Overhead Sectional Garage Door,Automatic Overhead Sectional Door, Overhead Insulated Garage Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfhighspeeddoor.com
/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge>Sequence process of SKF bearing finishing SKF bearing finishing sequence process
The superfinishing order of SKF bearings can usually be divided into three processes: cutting, half cutting, finishing finishing. /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
The first process: when the surface of the grinding stone of the SKF bearing is touched with the peak of the rough raceway surface; because the touch area is more than that of the ノ ノ 婊 氖芰 氖芰 螅 螅 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔 ㄑ沽ψ饔“ SKF bearing workpiece "anti-cutting" effect; some abrasive particles on the surface of the grinding stone fall and chipped; reveal some new sharp abrasive particles and edge. Together; SKF bearing workpiece's appearance peak is exploding Cutting; the effect of cutting and anti-cutting removes the peaks on the surface of the SKF bearing workpiece and the grinding of the enthalpy layer. This period is called the cutting period; during this period, a large amount of metal allowance is removed.
The second process: the half-cutting of the SKF bearing continues with the machining; the surface of the SKF bearing workpiece is gradually smoothed. At this time; the touch surface of the grindstone and the workpiece is added; the pressure per unit area is reduced; the cutting depth is reduced. Together; the pores of the grindstone are blocked; the grindstone is in a half-cut condition. This period is called the half-cutting period of the SKF bearing finishing; during the half-cutting, the SKF bearing workpiece has a shallower cutting mark; Luster.
The third process: during the finishing period, this is the final process of superfinishing of SKF bearings. The surface of the workpiece is gradually smoothed; the touch area of ​​the grinding stone and the external appearance of the workpiece is further increased; and; the appearance of the grinding stone and the SKF bearing workpiece Gradually blocked by smooth oil film; the pressure per unit area is very high. Xing 髯饔 髯饔 跣 詈笞 V V V V . 这一 这一. This period we call the finishing period. During the finishing period, there is no cutting mark on the surface of the workpiece; SKF bearings appear Shine product gloss.
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SKF bearing finishing sequence process
Source: China Bearing Network Time: 2014-08-04