The Bearing Bushing (OEM Part No. 3177007400) is a spare part compatible with Boomer 291, Boomer 281, Boomer L2D, and BOOMER-M2C underground drilling rigs. Manufactured from bearing steel or bronze materials, it serves as a support component for rotary and oscillating movements within the bearing housing system. The bushing reduces friction between moving parts, improves operational stability, and protects related components from excessive wear. Designed for heavy-duty mining applications, it provides excellent load-bearing performance, wear resistance, and service reliability. Accurate OEM dimensions ensure easy installation and long-lasting equipment performance.