5 and the temperature rise due to the thermal deformation <br> <br> intermediate bearing positioned between the gearbox and the headstock, heat dissipation is poor, resulting in a temperature rise above the intermediate bearing front bearing. The lubrication of the gearbox is in the form of extracorporeal circulation, and the amount of oil is large, which can take away some of the heat at the bearing, so the temperature rise of the intermediate bearing is not too high. Previous page
Industrial sectional doors are the most durable and longest lasting doors to ensure circulation at the areas of the factory entrance and exit of goods, loading and unloading areas.
The body of sectional door is forming by 40 mm sandwich panels. These panels provides sound and heat insulation due to the intense doped polyurethane insulation was injected between galvanized steel sheet. (50 kg/m3).
Industrial sectional door systems provide space-saving with opening parallel to the ceiling.Any opening can be used clearly . and produces in accordance with the transition range and the height in the factory buildings or warehouses.
Doors is working sliding by be the most appropriate the gap between the top level of the gate with a ceiling height within the side rasils. The door can be mounted in different ways according to the gap distance (standard, low, highlift and vertical track systems).
Industrial sectional doors can easily be opened automaticly by 230-380 V-AC/50 Hz electric motor or manualy thanks to torsion spring system that balances the weight of the door.The galvanized springs are made to be durable of 25.000 door cycles.Motor with emergency chain All the drive systems have a mechanical back-up system fitted to the reduction gearbox of the electric motor, so that the sectional door can be opened if the power fails. The reduction gearbox can then be powered using the chain.
Industrial Sectional Door,Industrial Overhead Sectional Door,Industrial Warehouse Sectional Door,Industrial Garage Interior Sectional Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com
The following is the temperature rise and thermal deformation of the spindle:
The spindle has a medium speed of 1180r/min, a time of 180min and a room temperature of 25.5°C.
The front bearing has a maximum temperature of 32.0 ° C and a temperature rise of 7 ° C;
The intermediate bearing has a maximum temperature of 32.4 ° C and a temperature rise of 6.4 ° C;
The deformation of the spindle center line on the main plane is 9.5 μm;
The deformation of the spindle center line on the secondary plane is 8.5 μm;
The axial deformation of the main shaft is 18.5 μm;
Spindle speed 2360r/min, time 180min, room temperature 25°C;
The front bearing has a maximum temperature of 44.6 ° C and a temperature rise of 19.6 ° C;
The rear bearing has a maximum temperature of 51.5 ° C and a temperature rise of 26.5 ° C.