How to choose the bucket pin of an excavator.


First of all, you must know the tonnage of your machine, whether it is a small machine or a large machine, what the operating conditions are, whether it is for mining or earthwork, for small machines and better operating conditions, such as earthwork, Manba recommends that you use the bucket pins that has been directly processed by surface induction hardening, which would be economical and could be durable applies in the earthwork.

For large models and poor operating conditions, such as mining operations, breaker applications, etc., Manba recommends using the bucket pins of quenched and tempered 42CrMo material with surface induction hardened. Such bucket pins have both wear resistance and good tenacity, and is not easy to break.

Secondly, when replacing the bucket pin, check the degree of wear of the bucket bushing to ensure that the clearance between the bucket bushing and the newly replaced bucket pin is within a reasonable range.

If the clearance is too small, when the machine is in the process of working, the heat generated by friction will cause the gap between the pin and the bushing to become smaller (thermal expansion and contraction), or even seizure, and ultimately causes the rotation and friction between the bushing and the dipper end boss, which damages the dipper end boss, and even the pin breaks.

If the gap is too large, the single-point contact between the pin and the bushing during the operation of the machine will easily cause the pin to break.

Finally, in the process of purchasing the bucket pin, except for the installation position of the bucket pin to be replaced, there is no other oil grease hole. Try to buy a bucket pin without oil grease holes. In addition, in order to equip conveniently, try to choose bucket pin with pull hole.