4144013 Original Excavator Spring Pin for ZX110

Part number 4144013 is the original spring pin provided by Hitachi for the ZX110 series small hydraulic excavator. According to the pictures and general rules of accessories you provided, this component is mainly used for detachable connection and axial fixation of key parts such as bucket teeth and tooth seats, bucket and connecting rod. Its universal models usually cover small models of 10-13 tons on platforms such as ZX110, ZX120, and ZX130, and have interchangeability at the same connection points of these models. As a standard fastening and anti loosening component of the original factory, its diameter, length, elasticity, and connection holes are precisely matched. It is strictly prohibited to use non-standard parts such as ordinary bolts and steel bars as substitutes to avoid loose connections, parts falling off, or structural damage.

This product is a high-strength spring steel open spring pin with a structure identical to the picture you provided: the main body is a cylindrical cylinder made of medium carbon or high carbon spring steel (such as 60Si2MnA) rolled, with a through gap reserved in the middle to provide radial elasticity. Typical technical parameters: The diameter is commonly 8mm, 10mm, or 12mm, and the length is about 40-80mm. The surface is treated with blackening, phosphating, or galvanizing, appearing dark gray or black, and has excellent rust prevention ability. After heat treatment, its hardness can reach HRC 44-50, with high shear strength and good elasticity. It can tightly adhere to the hole wall by its own elastic tension after insertion into the installation hole, achieving reliable self-locking and anti loosening, and can withstand high-frequency impacts and vibrations during excavation operations. Both ends are usually chamfered for easy installation.

Installation steps: 1 Align the pin holes between the bucket teeth and the tooth seat (or other connecting components); 2. Clean the pin hole to ensure that there are no foreign objects; 3. Align the chamfered end of the spring pin with the pin hole, use a copper rod or specialized punch, and strike the other end vertically with a hammer until it is installed in place (usually based on the groove or end face on the pin body being flush with the outer surface of the part). Disassembly steps: Use a suitable punch and hammer to knock out the spring pin in reverse from one end. Inspection and replacement cycle: It is recommended to inspect the bucket teeth every time they are replaced or every 500 working hours. Focus on checking whether the spring pin has permanent deformation, cracking, severe wear or corrosion. If the above situation occurs, or if the elasticity is significantly reduced after disassembly (difficult to pinch by hand), it must be replaced immediately and cannot be reused.