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How to choose & replace backhoe bucket teeth

Views: 35     Author: Site Editor     Publish Time: 2021-07-09      Origin: Site

With the continuous improvement of utilization rate in backhoe bucket teeth, more and more engineering is gradually to comply with the existence of this equipment. But with the use of excavator bucket teeth, the loss of excavator bucket teeth is also enhanced from time to time, the importance of excavator bucket teeth is obvious, so in the use of the time should pay more attention, must take the right measures to stop, so that the use of excavator bucket teeth will be normal. The first thing you should do is to choose the right one, and the material is determined based on the environment to stop, as long as this is enough to better ensure the right choice, and the right choice of bucket teeth in use is also able to play the best performance. Excavator driver in the operation of the excavation angle operation to pay attention to, as far as possible when excavation control, excavator bucket teeth down digging perpendicular to the work surface, or outward inclination angle is not greater than 120 degrees, to prevent the angle of inclination is too large and break bucket teeth. Also pay attention to not swinging the excavation arm left and right under the condition of greater resistance, which will make the bucket teeth and tooth seat due to excessive force left and right and break, due to the mechanical design principle of most models of bucket teeth, no consideration left and right force design. The wear condition of the tooth seat is also very important to the life of the excavator bucket teeth, the tooth seat wears off 10% - 15% after the initiative to replace the tooth seat, due to excessive wear between the tooth seat and the bucket teeth, there is a large gap, so that the bucket teeth and tooth seat fit, and the force point has changed, the bucket teeth due to the change of the force point and fracture.

If an excavator bucket teeth present a problem that also means that a large part of the function can not be used, so the maintenance of the excavator bucket teeth is particularly important, in the usual use of the thing after, we do not rush to keep them away and do not consciously to seal them, the best way is to stop them some finishing maintenance. It is worth noting that when sorting out, we need to remove contaminants, dust and impurities, and to restore the cleanliness of the edges and corners so that they will be in very good condition for the next job. The digging bucket is usually used after, should also pay attention to check, they and all kinds of soil touch inevitably will have wear and tear, or is a broken situation, for this, we have to find the problem in time, so that can be very good to repair them, and then end the maintenance of the guarantee.

At the same time, excavator bucket teeth such as can not slow down the impact of the impact, thus causing the hydraulic system within the hydraulic oil part of the pressure is too high (may cause the vibrations) thus incurring flexible hydraulic components, electrical components ageing and failure and other problems, and direct and long-term impact may also cause the moving arm, bucket rod fracture and other larger problems. Moreover, the high frequency of impact transmission, combined with the sharp noise generated by the impact, can make the excavator bucket tooth operator feel uncomfortable. In the vast majority of cases, the tooth seat and tooth sleeve (i.e. tooth tip) are used between the tooth pin coupling with a spring, this coupling requires a certain clearance between the tooth seat and the toothed sleeve to ensure that the assembly hole has a margin of alignment when the pin is installed if there is no clearance, the excavator bucket teeth assembly is difficult, processing and production to achieve considerable accuracy, which is not economic. Under the action of impact (digging harder materials when the impact is more frequent), the tooth seat and tooth sleeve between the fierce impact and friction, resulting in higher temperatures, so that the hardness of the material and impact toughness is reduced, resulting in tooth tip wear soon, tooth seat fracture by impact. In addition, excavator bucket teeth due to repeated impact, tooth pin and spring (spring deformation is very small, the gap is largely caused by the impact deformation is large) is also easy to produce fatigue failure. When not affected by the impact, the excavation force and excavation speed will also cause hard friction between the toothed sleeve and the tooth seat, thus causing the temperature of the part to rising. In the excavation operation, because of poor working conditions, water and air in the gap between the tooth seat and the toothed sleeve are rapidly heated, will make the appearance of low roughness of the bucket teeth part of the rust, in the larger excavation force under the action of the destruction of the bucket to speed up the adhesion oxidation, tooth surface hardening layer and metallographic organization; so that the bucket teeth can not meet the application requirements, reduce the effectiveness of excavation.

Classification of spare parts

The spare parts of excavators are divided into original parts, sub-factory parts and dismantled parts.

Original spare parts: genuine spare parts produced by the original manufacturer or a regular manufacturer designated by the original manufacturer. The quality is guaranteed, with after-sales service and warranty, and the price is relatively high.

Sub-factory parts: "cottage" parts produced by non-original manufacturers or regular manufacturers. The quality is uneven and not guaranteed, and the after-sales warranty is not guaranteed, and the price is relatively low.

Dismantled parts: spare parts dismantled from second-hand equipment. There is no guarantee of quality and no after-sales warranty, and the price is low.


The choice of bucket teeth should be based on the working environment to determine the specific type of bucket teeth. The right type of teeth can reduce the digging resistance and save fuel. Generally speaking, for ordinary earthwork, you can choose flat-head earth bucket teeth; for digging blocky hard rocks, use RC-type rock bucket teeth; for digging blocky coal seams, generally use TL-type pointed bucket teeth, which can improve the lump rate of coal.

How to avoid buying non-original parts

1. Pay attention to the packaging

The packaging of original spare parts is well made, with good paper quality, positive colours, clear patterns, manufacturer information and part numbers.

Non-original packaging production is relatively rough, the colour is not correct, the pattern is not clear, the lack of relevant product information.

Some original parts will have outer and inner packaging, while non-original parts will have no inner packaging.

2. Identify product quality

The original spare parts are well made, colourful and of good quality, while the imitation parts are roughly made and colourless.

Can be distinguished by comparison with the original spare parts, can also be detected with the help of special instruments.

3, beware of low-cost spare parts

The price of original spare parts is high, and the price is clearly marked, and will not be reduced too much, while the price of non-original spare parts is low, the price has room for concessions.

So be aware of the low price tag or the negotiable price tag of spare parts.

4. Buy from formal channels

The original spare parts have a designated formal sales channel, the informal channel of spare parts is not necessarily the original spare parts.

When buying, choose a formal and trustworthy channel.

Process of replacing bucket teeth

Because bucket teeth are in direct contact with soil, gravel, rock and other construction objects, the frequency and cost of replacing them is not low.

(1) Use the short teeth of the pin punch to align the pin with the bucket tooth to be replaced.

(2) With the help of a hammer, hit it hard until the bucket tooth is halfway loose.

(3) With the long teeth of the pin punch, align the pin with the pin and continue to strike hard until the pin comes out and falls off.

(4) Remove the bucket teeth and the whole procedure is complete.


Bucket teeth are mainly mounted on the bucket and have a supporting effect on the digging operation. There are many different types of bucket teeth, which can be divided into three main categories: earth teeth, rock teeth and tiger teeth for coal digging. A good bucket tooth can greatly reduce the resistance of the shovelling process and make the cutting process much easier. For harsh or hard working conditions, installing a suitable bucket tooth on the bucket can not only improve the efficiency of the machine but also significantly reduce the fuel consumption of the machine, thus increasing the efficiency of the machine. Therefore, the choice and use of bucket teeth are crucial.


Ningbo Beneparts Machinery Co., Ltd is a manufacturer in China armed with more than 30 years of successful experience in Ground Engaging Tools & Undercarriage Parts.


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