News Date:2015-09-14
Reducer is a kind of closed drive device in box, and composed by box, gear wheel, axis, bearing etc. and can change rotate speed and rotate distance between two axes, get wide application in project.
Most of planetary reducer box are non-dissection integration type, it is easy to guarantee machining accuracy, but difficult to assemble.
Usually, reducer adopts rolling bearing, and adjusts the gap of bearing by bearing cap with spacer. For easy view meshing condition of box and inject lubricating oil to the box, an eyehole with eyehole cap is opened. Eyehole is usually equipped with vent plug, air can discharge through this eyehole when the air in box is expanded due to temperature rise.
Lubrication of reducer is the important factor to guarantee normal operation. It can reduce friction and abrasion on the surface between gear wheel and bearing, meanwhile can also heat dissipation, rust protection and noise reduction. Gear wheel of reducer casing commonly used lubrication method is to immerse gear wheel into oil sump, the lubricating oil be brought to meshing surface to realize lubrication, in order to prevent too much power consumption when stir, gear wheel should not be immerse much too deep in oil sump, high of 1-2 gear is usually better. To avoid the bottom sludge be brought to gear surface, it should not be less than 30-50mm from tip circle of low level gear wheel to bottom of box.
When gear wheel at high speed, the lubricating oil in gear ring is dumped on the wall of box, and comes into oil mist due to splashing, bearings are able to lubricate directly by oil mist. When gear wheel at low speed, the lubricating oil on box cover is collected through oil gallery on box, and enters into bearing to realize lubricating.
When gear wheel at high circular velocity, it must adopt oil injection for circulating lubrication, that is to say, lubricating oil is bring to the place where need to lubricate. When gear wheel at low circular velocity, it can adopt lubricating grease to lubricate bearing.
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