Deep Groove Ball Bearings (DGBB) – 20 mm ID to 380 mm OD represent a versatile range of precision rolling bearings covering small-to-large industrial applications. With bore diameters from 20 mm to 380 mm, this family accommodates shaft sizes from light-duty electric motors to heavy industrial equipment, offering excellent radial and axial load capacity in both directions.
Key Technical Features:
Size range: Minimum bore 20 mm (e.g., 6204 series) to maximum OD 380 mm (e.g., 6234 or similar configurations). Widths scale proportionally from 14 mm to over 60 mm depending on series (62, 63, or 64 series).
Load capacity: Deeper raceway grooves provide high radial load ratings and moderate bidirectional axial load capability. Larger bearings in this range (e.g., 200 mm+ bore) support multi-ton radial loads in heavy machinery.
Internal clearance: Available in CN (normal), C3, C4, or custom clearances to accommodate thermal expansion, shaft deflection, and housing fits.
Cage options: Pressed steel (standard), brass machined (high temperature), or polyamide (low noise) depending on size and application.
Sealing/shielding: Open, ZZ (metal shields), or 2RS (contact rubber seals) for contamination protection.
Precision classes: P0 (standard) for general use, P6 or P5 for higher accuracy requirements.
Applications:
This DGBB range serves electric motors, gearboxes, pumps, conveyors, industrial fans, agricultural machinery, construction equipment, paper mills, and mining equipment. Offering the optimal balance of cost, load capacity, and availability, these bearings are the industry workhorse for medium-to-large rotating machinery.
