Nmrv 075 Worm Gearbox

The housing of the nmrv 075 worm gearbox is made of aluminium or cast iron. It has the advantages of low noise, compact structure, high speed ratio and stable operation. The nmrv 075 worm gearbox is widely used in the industrial field, the textile field, the stirring industry in the chemical field, the conveying equipment in logistics, the crushing and screening in the mining industry, etc.

Due to the harsh operating environment of the reducer, faults such as wear and leakage often occur. The main types are:

1.Wear of the bearing chamber of the reducer, which includes wear of the bearing box of the shell, the bearing chamber of the inner hole of the box, and the bearing chamber of the gearbox.

2. The shaft diameter of the reducer gear shaft is worn, with the main worn parts being the shaft head, key way, etc.

3. Wear of the bearing position of the transmission shaft of the reducer;

4. Leakage at the mating surface of the reducer.

For the problem of wear and tear, the traditional solutions are to repair by welding or brush plating followed by machining. However, both methods have certain drawbacks: the thermal stress generated by high temperature during welding cannot be completely eliminated, which can easily cause material damage, leading to bending or breaking of components. However, brush plating is limited by the thickness of the coating and is prone to peeling off. Moreover, both of the above two methods repair metal with metal and cannot change the "hard against hard" fit relationship. Under the combined action of various forces, it will still cause re-wear. For some large bearing enterprises, it is even impossible to solve the problem on site, and they mostly have to rely on outsourcing for repair.

In contemporary Western countries, the repair methods of polymer composite materials are mostly used for the above problems, which have comprehensive properties such as extremely strong adhesion and excellent compressive strength. The application of polymer materials for repair can be carried out without disassembly or machining, without the influence of thermal stress from welding, and the thickness of the repair is not limited. At the same time, the product has a concession property that metal materials do not have, which can absorb the impact and vibration of the equipment, avoid the possibility of re-wear, and greatly extend the service life of the equipment components, saving a lot of downtime for enterprises and creating huge economic value.

As for the oil leakage problem, the traditional method requires disassembling and opening the reducer, replacing the sealing gasket or applying sealing glue. This not only takes a lot of time and effort but also makes it difficult to ensure the sealing effect. Moreover, leakage may occur again during operation. Polymer materials can be used on-site to treat leakage. The superior adhesion, oil resistance and 350% tensile strength of the materials can overcome the influence caused by the vibration of the reducer and effectively solve the problem of reducer oil leakage for enterprises.

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