The Bearing (OEM Part No. 3128309217) is a spare part compatible with S10M, Boltec S, Boltec 235, Boltec-MC, Boltec-S, and Boomer-MD underground drilling rigs. Manufactured from high-quality bearing steel, it is designed as a bearing component for the rotating and pivot support system at the bearing assembly position. The bearing reduces friction between moving parts, supports rotational movement, and helps maintain smooth and stable equipment operation. Its durable construction provides excellent load capacity, wear resistance, and extended service life in demanding underground mining and tunneling environments. This OEM replacement bearing ensures reliable performance for drilling and bolting equipment.