As the core equipment of the mining crushing system, jaw crushers are widely used in metallurgy, building materials and other industries. The latest industry statistics in 2025 show that about 23% of equipment unplanned downtime accidents are related to eccentric shaft abnormalities. This article combines the five-year maintenance data of a large domestic iron ore…

River pebbles with a diameter of no more than 630 mm are sent to the NK75J jaw crusher mobile station for preliminary crushing by a forklift. After that, after careful screening by the feeder, small and medium-sized materials slide smoothly onto the main belt conveyor through the special grate hopper, merge with the materials processed…