The Komatsu ZB21 bolter is designed to streamline the entire bolting cycle, allowing operators to install bolts and screens from within a protected enclosure—enhancing safety while reducing cycle times. Its innovative bolting head features minimal moving parts for smooth operation and increased uptime. The system supports up to four major bolt types, with two available from a single carousel, and offers full tunnel coverage—backs, walls, and even the face. Whether diesel or battery-electric, the
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