The B4 jaw crusher is available in three drive versions: diesel-hydraulic, hybrid plug-in, and ZERO full-electric drive.
Keestrack
B4 jaw cursher
The Keestrack B4 jaw crusher is engineered for heavy-duty recycling applications. Its Non-Stop System with hydraulic gap adjustment allows the crusher to open automatically when uncrushable material enters the chamber and then reset itself hydraulically. During operation, the closed side setting (CSS) is continuously monitored and automatically adjusted to ensure consistent, high-quality output.
Designed for maximum productivity and low operating costs, the B4 features a heavy-duty hopper with hydraulically folding hopper walls and a secure locking system, allowing easy loading by excavators or wheel loaders. The vibrating feeder automatically regulates the feed to maintain an optimal crusher load of approximately 80 percent.
A long, independent two-deck prescreen ensures high crushing capacities of up to 400 tons per hour while significantly reducing wear. Prescreened fractions can bypass the crusher or be stockpiled separately using the optional side conveyor.
The B4 has a feed opening of 43 inches x 27.5 inches and accepts feed sizes up to 24 inches. The CSS ranges from 1-three-quarter inches to 6-one-third inches, even with worn jaws. Automatic wear compensation is activated every 50 operating hours to maintain consistent end-product quality, with manual adjustment available if required.
Maintenance is simplified through excellent service access, with walkways, doors, and panels on all sides. The hydraulic sliding hopper frame further improves access beneath the feeder and scalping unit.
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