Large Size Conveyor Chain Structure
1. Structural Diagram
Three basic chain dimensions
The three basic dimensions of conveyor chain are pitch, roller diameter, and inner link inner width.
When these dimensions are the same, the chain and sprocket are compatible.
*Total length tolerance for large size conveyor chain is +0.25%.
|1. Pin (CP)||2. Bush (B)|
|The most important role of the pin is connecting the inner link to the outer link. Along with the plate, it receives chain tension along the direction of travel while receiving vertical reactive forces from the conveyed items. The outer diameter of the pin suffers wear from sliding against the bush inner diameter when the chain articulates. The pin is an essential strength bearing part and requires high wear resistance.||The bush is a strength bearing part, receiving tension from the chain during sprocket engagement, but its main role is as a bearing part. The outer diameter of the bush suffers wear from sliding against the roller inner diameter during roller rotation, while the bush inner diameter suffers wear from sliding against the outer diameter of the pin when the chain articulates. Bush inner diameter wear is directly expressible as pitch elongation.|
|3. Roller (R-R、F-R、S-R、M-R、N-R)||4. Plate (PLP-A、PLP-B、BLP)|
|Forms a slip fit with the bush. Rotates when engaging with the sprocket, while alleviating the shock and wear from the teeth. Rotation also lowers running resistance.||The plate mainly receives the tensile load along the chain's direction of travel while receiving vertical reactive forces while supporting the conveyed item. The outer plate and inner plate slide against each other during chain articulation, as well as against the sides of the sprocket teeth during sprocket engagement. Outer plate holes are either round or flat.|
|5. T-pin (T-pin)||6. Attachment|
|After the outer plate is press-fitted to the pin, A T-pin is inserted and bent to prevent the pin from falling out.
Bend 30º or more, or so that the end of the T-pin does not exceed the height of the plate.
|For attaching items to the chain.|
*( ) denotes codes for part names as found on drawings.
3. For Safety
Never weld additional parts onto an assembled chain. Doing so may cause chain kinking or twisting due to plate deformation, further reducing part hardness and leading to embrittlement fracture from the welding heat.